Problem with drawImage
I've got a JLabel that i've extended in order to stretch an image to the full size of the JLabel.
public class ImageLabel extends JLabel {
public ImageLabel() {
super();
public ImageLabel(ImageIcon imageIcon) {
super();
super.setIcon(imageIcon);
private void setIcon(ImageIcon imageIcon) {
super.setIcon(imageIcon);
public void paintComponent(Graphics g) {
g.drawImage(
((ImageIcon)super.getIcon()).getImage().getScaledInstance
(this.getWidth(), this.getHeight(), Image.SCALE_FAST), 0, 0,
this);
the above works just fine but the problem is that drawImage is getting the image from the original source which is the web server so it is making a request for the image to the web server. i don't want this because i've already cached the image and am passing the image as an ImageIcon to my class using setIcon.
Is there a way to stretch an image using my cached image without it having to get the source image?
I've tried getting around this problem by just using JLabel and the getScaledInstance method of the Image class. This also works however i can't get the correct width and height of the JLabel to scale the image. It never displays the correct size for the first image i display but works fine for subsequent images.
Thanks for any suggestions!
What do you have set for the source of the image that you're using to build the icon? Is this an applet or an application? If it's an application, and you have a URL set as the source of the image, then you could first have the program download the image into a file, then use that file as the source, and then later delete the file if you didn't want the file to stay permanently with the program.
If it's an applet, then as far as I know, there's really no way around having it download the image from the web when it's requested, unless you did something such as stuck both the program and the graphic in a jar file so when the browser downloaded the program it also got the graphic along with it.
Similar Messages
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Having a problem with drawImage() and dont know why...
OK, I'm having some problems drawing my image onto the frame.. It will let me draw string, add components, etc.. but as soon as it come to trying to draw an image it just doesn't wanna..
Here is my code:
import java.awt.*;
public class Messenger extends Frame {
private boolean laidOut = false;
private TextField words;
private TextArea messages;
private Button ip, port, nickname;
public Messenger() {
super();
setLayout(null);
//set layout font
setFont(new Font("Helvetica", Font.PLAIN, 14));
//set application icon
Image icon = Toolkit.getDefaultToolkit().getImage("data/dh002.uM");
setIconImage((icon));
//add components
words = new TextField(30);
add(words);
messages = new TextArea("", 5, 20, TextArea.SCROLLBARS_VERTICAL_ONLY);
add(messages);
ip = new Button("IP Address");
add(ip);
port = new Button("Port");
add(port);
nickname = new Button("Nickname");
add(nickname);
public void paint(Graphics g) {
if (!laidOut) {
Insets insets = insets();
//draw layout
g.drawImage("data/dh003.uM", 0 + insets.left, 0 + insets.top);
ip.reshape(5 + insets.left, 80 + insets.top, 100, 20);
port.reshape(105 + insets.left, 80 + insets.top, 100, 20);
nickname.reshape(205 + insets.left, 80 + insets.top, 100, 20);
messages.reshape(5 + insets.left, 100 + insets.top, 485, 300);
g.drawString("Type your message below:", 5 + insets.left, 425 + insets.top) ;
words.reshape(5 + insets.left, 440 + insets.top, 485, 20);
laidOut = true;
public boolean handleEvent(Event e) {
if (e.id == Event.WINDOW_DESTROY) {
System.exit(0);
return super.handleEvent(e);
public static void main(String args[]) {
Messenger window = new Messenger();
Insets insets = window.insets();
//init window..
window.setTitle("Unrivaled Messenger");
window.resize(500 + insets.left + insets.right,
500 + insets.top + insets.bottom);
window.setBackground(SystemColor.control);
window.show();
}Im only new to Java, maybe I've left something out ? Any help will be much appreciated, thanks :)Thanks! Got the image to display now... but, next problem.. its a strange one, whenever the application is minimized or has something dragged/popup over the top of it, those sections of text/images disappear... anyone know a reason for this? im using the d.drawImage() like displayed in my code above.. this is the final code for my image..
Image banner = null;
try {
banner = ImageIO.read(new File("data/dh003.uM"));
} catch(IOException e) { }
g.drawImage(banner,0 + insets.left, 0 + insets.top, this);and as for my text...
g.setFont(new Font("Arial",1,14));
g.drawString("Type your message below:", 5 + insets.left, 425 + insets.top);Thanks in advance! -
Hi! I try to do following:
1. I create BufferedImage and print some text on it' Graphics object via drawString().
2. In paint() method of my applet I draw this image on applet's graphics using drawImage().
3. I also print some text on applets' Graphics object via drawString().
4. Then I launch the applet and print it contents on printer.
And I found that text drawn directly on applet's graphic printed softly, but text drawn on image was sharp. On srceen they both were similar one to another.
I have to use drawImage. Can anybody help me?
There is code of my Applet:
import java.awt.*;
import java.applet.*;
import java.awt.image.BufferedImage;
import java.awt.image.Raster;
public class Applet1 extends Applet {
public void paint(Graphics g){
Font font = new Font(null,Font.PLAIN,40);
BufferedImage bi = new BufferedImage (400,300,BufferedImage.TYPE_BYTE_GRAY);
Graphics graphics = (Graphics)bi.getGraphics();
graphics.setColor(Color.white);
graphics.fillRect(0,0,800,600);
graphics.setColor(Color.black);
graphics.setFont(font);
graphics.drawString("First Testing String",20,40);
graphics.drawString("Second Testing String",30,80);
graphics.drawString("Third Testing String",40,120);
g.drawImage(bi,0,0,null);
g.setColor(Color.black);
g.setFont(font);
g.drawString("First Testing String",20,160);
g.drawString("Second Testing String",30,200);
g.drawString("Third Testing String",40,240);
public static void main(String[] args) {
Applet1 applet = new Applet1();
applet.init();
applet.start();As far as I remember there is passed a different Graphics object (other resolution for one thing) to either screen or printer device. Also you might check out the print(Graphics g) method.
You might know that already. -
Can anyone say the problem with the attached code. When I run the program, only, maximize, minimize and close options are viewable and nothing else.
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Image;
import java.awt.Insets;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.LineBorder;
* Created on Mar 24, 2008
* @author Anand
public class JBackGroundImageDemo extends JFrame
Container con = null;
JPanel panelBgImg;
public JBackGroundImageDemo()
setTitle("JBackGroundImageDemo");
con = getContentPane();
con.setLayout(null);
ImageIcon imh = new ImageIcon("aditi.jpg");
setSize(imh.getIconWidth(), imh.getIconHeight());
panelBgImg = new JPanel()
public void paintComponent(Graphics g)
Image img = new ImageIcon("aditi.jpg").getImage();
Dimension size = new Dimension(img.getWidth(null), img.getHeight(null));
setPreferredSize(size);
setMinimumSize(size);
setMaximumSize(size);
setSize(size);
setLayout(null);
g.drawImage(img, 0, 0, null);
con.add(panelBgImg);
panelBgImg.setBounds(0, 0, imh.getIconWidth(), imh.getIconHeight());
GridBagLayout layout = new GridBagLayout();
JPanel panelContent = new JPanel(layout);
GridBagConstraints gc = new GridBagConstraints();
gc.insets = new Insets(3, 3, 3, 3);
gc.gridx = 1;
gc.gridy = 1;
JLabel label = new JLabel("UserName: ", JLabel.LEFT);
panelContent.add(label, gc);
gc.gridx = 2;
gc.gridy = 1;
JTextField txtName = new JTextField(10);
panelContent.add(txtName, gc);
gc.insets = new Insets(3, 3, 3, 3);
gc.gridx = 1;
gc.gridy = 2;
gc.gridwidth = 2;
JButton btn = new JButton("Login");
panelContent.add(btn, gc);
panelContent.setBackground(Color.GRAY);
panelContent.setBorder(new LineBorder(Color.WHITE));
panelBgImg.add(panelContent);
panelBgImg.setLayout(new FlowLayout(FlowLayout.CENTER, 150, 200));
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
public static void main(String[] args)
new JBackGroundImageDemo().setVisible(true);
Please help.
Regards,
AneesHere's you a little code example, it works, so take a look at it.
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Toolkit;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Junk{
public Junk(){
public void makeFrame(){
JFrame j = new JFrame("Junk");
Toolkit t = Toolkit.getDefaultToolkit();
MediaTracker mt = new MediaTracker(j);
Image img = t.getImage("junk.jpg");
mt.addImage(img, 0);
try{
mt.waitForID(0);
}catch(InterruptedException e){
System.out.println("Hey, we were too impatient!");
myPanel p = new myPanel(img);
p.setPreferredSize(new Dimension(img.getWidth(null), img.getHeight(null)));
j.add(p);
j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
j.pack();
j.setVisible(true);
public static void main(String[] args){
new Junk().makeFrame();
class myPanel extends JPanel{
Image img;
myPanel(Image img){
this.img = img;
public void paintComponent(Graphics g){
g.drawImage(img, 0, 0, this);
}BTW: your image should be in your project folder. -
Problem with ScrollPane and JFrame Size
Hi,
The code is workin but after change the size of frame it works CORRECTLY.Please help me why this frame is small an scrollpane doesn't show at the beginning.
Here is the code:
import java.awt.*;
public class canvasExp extends Canvas
private static final long serialVersionUID = 1L;
ImageLoader map=new ImageLoader();
Image img = map.GetImg();
int h, w; // the height and width of this canvas
public void update(Graphics g)
paint(g);
public void paint(Graphics g)
if(img != null)
h = getSize().height;
System.out.println("h:"+h);
w = getSize().width;
System.out.println("w:"+w);
g.drawRect(0,0, w-1, h-1); // Draw border
// System.out.println("Size= "+this.getSize());
g.drawImage(img, 0,0,this.getWidth(),this.getHeight(), this);
int width = img.getWidth(this);
//System.out.println("W: "+width);
int height = img.getHeight(this);
//System.out.println("H: "+height);
if(width != -1 && width != getWidth())
setSize(width, getHeight());
if(height != -1 && height != getHeight())
setSize(getWidth(), height);
}I create frame here...
import java.awt.*;
import java.awt.event.*;
import javax.swing.JFrame;
public class frame extends JFrame implements MouseMotionListener,MouseListener
private static final long serialVersionUID = 1L;
private ScrollPane scrollPane;
private int dragStartX;
private int dragStartY;
private int lastX;
private int lastY;
int cordX;
int cordY;
canvasExp canvas;
public frame()
super("test");
canvas = new canvasExp();
canvas.addMouseListener(this);
canvas.addMouseMotionListener(this);
scrollPane = new ScrollPane();
scrollPane.setEnabled(true);
scrollPane.add(canvas);
add(scrollPane);
setSize(300,300);
pack();
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
public void mousePressed(MouseEvent e)
dragStartX = e.getX();
dragStartY = e.getY();
lastX = getX();
lastY = getY();
public void mouseReleased(MouseEvent mouseevent)
public void mouseClicked(MouseEvent e)
cordX = e.getX();
cordY = e.getY();
System.out.println((new StringBuilder()).append(cordX).append(",").append(cordY).toString());
public void mouseEntered(MouseEvent mouseevent)
public void mouseExited(MouseEvent mouseevent)
public void mouseMoved(MouseEvent mouseevent)
public void mouseDragged(MouseEvent e)
if(e.getX() != lastX || e.getY() != lastY)
Point p = scrollPane.getScrollPosition();
p.translate(dragStartX - e.getX(), dragStartY - e.getY());
scrollPane.setScrollPosition(p);
}...and call here
public class main {
public main(){}
public static void main (String args[])
frame f = new frame();
}There is something I couldn't see here.By the way ImageLoader is workin I get the image.
Thank you for your help,please answer me....I'm not going to even attempt to resolve the problem posted. There are other problems with your code that should take priority.
-- class names by convention start with a capital letter.
-- don't use the name of a common class from the standard API for your custom class, not even with a difference of case. It'll come back to bite you.
-- don't mix awt and Swing components in the same GUI. Change your class that extends Canvas to extend JPanel instead, and override paintComponent(...) instead of paint(...).
-- launch your GUI on the EDT by wrapping it in a SwingUtilities.invokeLater or EventQueue.invokeLater.
-- calling setSize(...) followed by pack() is meaningless. Use one or the other.
-- That's not the correct way to display a component in a scroll pane.
Ah, well, and the problem is that when you call pack(), it retrieves the preferredSize of the components in the JFrame, and you haven't set a preferredSize for the scroll pane.
Please, for your own good, take a break from whatever it is you're working on and go through The Java™ Tutorials: [Creating a GUI with JFC/Swing|http://java.sun.com/docs/books/tutorial/uiswing/TOC.html]
db -
Problem with Background image and JFrame
Hi there!
I've the following problem:
I created a JFrame with an integrated JPanel. In this JFrame I display a background image. Therefore I've used my own contentPane:
public class MContentPane extends JComponent{
private Image backgroundImage = null;
public MContentPane() {
super();
* Returns the background image
* @return Background image
public Image getBackgroundImage() {
return backgroundImage;
* Sets the background image
* @param backgroundImage Background image
public void setBackgroundImage(Image backgroundImage) {
this.backgroundImage = backgroundImage;
* Overrides the painting to display a background image
protected void paintComponent(Graphics g) {
if (isOpaque()) {
g.setColor(getBackground());
g.fillRect(0, 0, getWidth(), getHeight());
if (backgroundImage != null) {
g.drawImage(backgroundImage,0,0,this);
super.paintComponent(g);
Now the background image displays correct. But as soon as I click on some combobox that is placed within the integrated JPanel I see fractals of the opened combobox on the background. When I minimize
the Frame they disappear. Sometimes though I get also some fractals when resizing the JFrame.
It seems there is some problem with the redrawing of the background e.g. it doesn't get redrawn as often as it should be!?
Could anyone give me some hint, on how to achieve a clear background after clicking some combobox?
Thx in advanceI still prefer using a border to draw a background image:
import java.awt.*;
import java.awt.image.*;
import javax.swing.border.*;
public class CentredBackgroundBorder implements Border {
private final BufferedImage image;
public CentredBackgroundBorder(BufferedImage image) {
this.image = image;
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
int x0 = x + (width-image.getWidth())/2;
int y0 = y + (height-image.getHeight())/2;
g. drawImage(image, x0, y0, null);
public Insets getBorderInsets(Component c) {
return new Insets(0,0,0,0);
public boolean isBorderOpaque() {
return true;
}And here is a demo where I load the background image asynchronously, so that I can launch the GUI before the image is done loading. Warning: you may find the image disturbing...
import java.awt.*;
import java.io.*;
import java.net.URL;
import javax.imageio.*;
import javax.swing.*;
import javax.swing.border.*;
public class BackgroundBorderExample {
public static void main(String[] args) throws IOException {
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame f = new JFrame("BackgroundBorderExample");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTextArea area = new JTextArea(24,80);
area.setForeground(Color.WHITE);
area.setOpaque(false);
area.read(new FileReader(new File("BackgroundBorderExample.java")), null);
final JScrollPane sp = new JScrollPane(area);
sp.setBackground(Color.BLACK);
sp.getViewport().setOpaque(false);
f.getContentPane().add(sp);
f.setSize(600,400);
f.setLocationRelativeTo(null);
f.setVisible(true);
String url = "http://today.java.net/jag/bio/JagHeadshot.jpg";
final Border bkgrnd = new CentredBackgroundBorder(ImageIO.read(new URL(url)));
Runnable r = new Runnable() {
public void run() {
sp.setViewportBorder(bkgrnd);
sp.repaint();
SwingUtilities.invokeLater(r);
} -
Problem with repaint of display after a click event
Hi,
I have a problem with repaint of display. In particular in method keyPressed() i inserted a statement that, after i clicked bottom 2 of phone, must draw a string. But this string doesn't drawing.
Instead if i reduce to icon the window, which emulate my application, and then i enlarge it, i see display repainted with the string.
I don't know why.
Any suggestions?
Please help me.modified your code little
don't draw in keyPressed
import java.io.IOException;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
public class PlayerCanvas extends Canvas implements CommandListener{
Display display;
Displayable dsp11;
private Image play, pause, stop, next, previous = null;
private int gamcode;
private Command quitCmd = new Command("Back", Command.ITEM, 1);
public PlayerCanvas(Display display,Displayable dsp11){
this.display =display;
this.dsp11 =dsp11;
addCommand(quitCmd);
createController();
setCommandListener(this);
display.setCurrent(this);
protected void paint(Graphics g)
g.setColor(255,200,150);
g.fillRect(0, 0, getWidth(), getHeight());
if (play != null){
g.drawImage(play, getWidth()/5, getHeight()-50, Graphics.BOTTOM | Graphics.HCENTER);
if (stop != null){
g.drawImage(stop, getWidth()/5, getHeight()-10, Graphics.BOTTOM | Graphics.HCENTER);
if (next != null){
g.drawImage(next, (getWidth()/5)+10, getHeight()-30, Graphics.BOTTOM | Graphics.LEFT);
if (previous != null){
g.drawImage(previous, (getWidth()/5)-30, getHeight()-30, Graphics.BOTTOM | Graphics.LEFT);
/////this will draw on key UP
g.setColor(0,0,0);
System.out.print(gamcode);
if(gamcode==Canvas.UP){
g.drawString("PROVA",10, 0, 0);
}else if(gamcode==Canvas.DOWN){
g.drawString("DIFFERENT",10, 30, 0);
private void createController()
try {
play = Image.createImage("/icon3.png");//replace your original images plz
pause = Image.createImage("/icon3.png");
stop = Image.createImage("/icon3.png");
next = Image.createImage("/icon3.png");
previous = Image.createImage("/icon3.png");
} catch (IOException e) {
play = null;
pause = null;
stop = null;
next = null;
previous = null;
if (play == null){
System.out.println("cannot load play.png");
if (pause == null){
System.out.println("cannot load pause.png");
if (stop == null){
System.out.println("cannot load stop.png");
if (next == null){
System.out.println("cannot load next.png");
if (previous == null){
System.out.println("cannot load previous.png");
protected void keyPressed(int keyCode)
repaint();
if ( (keyCode == 2) || (UP == getGameAction(keyCode)) ){
gamcode = UP;
repaint();
else if ( (keyCode == 8) || (DOWN == getGameAction(keyCode)) ){
gamcode =DOWN;
repaint();
else if ( (keyCode == 4) || (LEFT == getGameAction(keyCode)) ){
else if ( (keyCode == 6) || (RIGHT == getGameAction(keyCode)) ){
public void commandAction(Command arg0, Displayable arg1) {
// TODO Auto-generated method stub
if(arg0==quitCmd){
display.setCurrent(dsp11);
} -
Printing problem with Graphics2D
Hi, Ive got a problem with printing.
I have a JPanel and it has among other things a button to print the component which is an instance of the class its in. This is a drawing in Graphics2D. here is the following code that is meant to do the printing:-
if(e.getActionCommand().equals("print")){
System.out.println("print pressed " + title);
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintable(this);
if(printJob.printDialog()){
try { printJob.print(); }
catch (Exception PrinterExeption) { PrinterExeption.printStackTrace();}
public int print(Graphics g, PageFormat pf, int pi) throws PrinterException {
if (pi >= 1) {
System.out.println("print failed");
return Printable.NO_SUCH_PAGE;
Graphics2D g2 = (Graphics2D) g;
g2.translate(pf.getImageableX(), pf.getImageableY());
g2.setColor(Color.black);
this.paintAll(g2);
System.out.println("print successful");
return Printable.PAGE_EXISTS;
However it doesnt print and comes up with the following long message..
java.awt.image.ImagingOpException: Unable to transform src image
at java.awt.image.AffineTransformOp.filter(AffineTransformOp.java:263)
at sun.java2d.pipe.DrawImage.transformImage(DrawImage.java:304)
at sun.java2d.pipe.DrawImage.scaleBufferedImage(DrawImage.java:453)
at sun.java2d.pipe.DrawImage.scaleImage(DrawImage.java:531)
at sun.java2d.pipe.DrawImage.scaleImage(DrawImage.java:801)
at sun.java2d.pipe.ValidatePipe.scaleImage(ValidatePipe.java:171)
at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:2875)
at sun.print.PSPathGraphics.drawImageToPS(PSPathGraphics.java:998)
at sun.print.PSPathGraphics.drawImage(PSPathGraphics.java:495)
at sun.print.PSPathGraphics.drawImage(PSPathGraphics.java:406)
at sun.print.PSPathGraphics.drawImage(PSPathGraphics.java:345)
at sun.print.PSPathGraphics.drawImage(PSPathGraphics.java:288)
at sun.print.PSPathGraphics.drawImage(PSPathGraphics.java:197)
at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4781)
at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4724)
at javax.swing.JComponent.paint(JComponent.java:798)
at java.awt.Component.lightweightPaint(Component.java:2382)
at java.awt.Container.lightweightPaint(Container.java:1390)
at java.awt.GraphicsCallback$PeerPaintCallback.run(GraphicsCallback.java:67)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60)
at java.awt.Component.paintAll(Component.java:2367)
at DrawingMethods.print(DrawingMethods.java:833)
at sun.print.RasterPrinterJob.printPage(RasterPrinterJob.java:1506)
at sun.print.RasterPrinterJob.print(RasterPrinterJob.java:1078)
at sun.print.RasterPrinterJob.print(RasterPrinterJob.java:979)
at DrawingMethods.actionPerformed(DrawingMethods.java:817)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1764)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1817)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:419)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:227)
at java.awt.Component.processMouseEvent(Component.java:5093)
at java.awt.Component.processEvent(Component.java:4890)
at java.awt.Container.processEvent(Container.java:1566)
at java.awt.Component.dispatchEventImpl(Component.java:3598)
at java.awt.Container.dispatchEventImpl(Container.java:1623)
at java.awt.Component.dispatchEvent(Component.java:3439)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3450)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3165)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
at java.awt.Container.dispatchEventImpl(Container.java:1609)
at java.awt.Window.dispatchEventImpl(Window.java:1585)
at java.awt.Component.dispatchEvent(Component.java:3439)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
I dont know how to get it to work and either does a PHD mate of mine.
Please help
All I need is a guarenteed way to get a Graphics2D component to print
cheers
pmiggyUm I dont know if im doing something daft but I tried this like you said
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintable(this);
if(printJob.printDialog()){
try {
PageFormat pageFormat = printJob.defaultPage();
if (pageFormat.getOrientation() == PageFormat.PORTRAIT) {
landscape = 0;} else {
landscape = 1;}
System.out.println("THE ORIENTATION IS "+ landscape);
printJob.print(); }
catch (Exception PrinterExeption) { PrinterExeption.printStackTrace();}
and it doesnt seem to work as I tried it both as landscape and portrait in the print dialog but landscape is always 0.
cheers
pmiggy -
Hi everyone,
I have been trying to get this GUI built from the ground up and I have encountered a problem with the GridBag(exception error that the fields being added can not be done. Also, my method main seems to be off track, I have a working program which the display fields have been modified to display object and everything else is the same except that I can not get the GUI to run.
The following is the code and any suggestions as to what I can do to get this going will be appreciated. Thank you.
import javax.swing.JLabel; /* displays text and images*/
import javax.swing.SwingConstants; /* common constants used with Swing*/
import javax.swing.Icon; /* interface used to manipulate images*/
import javax.swing.ImageIcon; /* loads images*/
import javax.swing.JOptionPane;
import java.util.*;
import java.io.PrintStream;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.*;
import javax.swing.JFrame;/* provides basic window features*/
import java.util.Arrays;
import javax.swing.ImageIcon.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class FinalInventoryGUI extends JFrame
{//Private variables.
private GridBagLayout layout = new GridBagLayout();
private GridBagConstraints constraints = new GridBagConstraints();
//Private data from main program
private String productName;
private String itmeNumber;
private double unitPrice;
private int unitStock;
private double productValue;
private double inventoryValue;
private double reStkfee;
//Declaration of the JLabels.
private JLabel logoLabel;
private JLabel productNameLabel;
private JLabel itemNumberLabel;
private JLabel unitPriceLabel;
private JLabel unitStockLabel;
private JLabel productValueLabel;
private JLabel InventoryValueLabel;
private JLabel reStkfeeLabel;
//Declaration of the text Fields for data Entry.
private JTextField productNameText;
private JTextField itemNumberText;
private JTextField unitPriceText;
private JTextField unitStockText;
private JTextField productValueText;
private JTextField inventoryValueText;
private JTextField reStkfeeText;
private JTextField titleText;
//Declaration of the JButtons for user interface.
private JButton first;//To move to first element in the array.
private JButton next;//To move to next element in the array.
private JButton previous;//To move to next element in the array.
private JButton lastButton;//To move to the first element in the array.
private JButton addButton;//To add a product to the array.
private JButton modifyButton;//To modify an element in the array.
private JButton deleteButton;//To remove a product from the array.
private JButton saveButton;//To save the array elements to C:\.
private JButton searchButton;//To search for an element in the array.
private Product products[];//Declaration of array product[] for storing entries.
private int NumOfProducts;//Declaration of the variable defining the number of products.
private int Index=0;//Setting the counter index to initiate at "0".
//Constants
private final static int LOGO_WIDTH = 4;
private final static int LOGO_HEIGHT = 4;
private final static int LABEL_WIDTH = 1;
private final static int LABEL_HEIGHT = 1;
private final static int TEXT_WIDTH = LOGO_WIDTH-LABEL_WIDTH;
private final static int TEXT_HEIGHT = 1;
private final static int BUTTON_WIDTH = 1;
private final static int BUTTON_HEIGHT = 1;
private final static int LABEL_START_ROW = LABEL_HEIGHT+LABEL_WIDTH+1;
private final static int LABEL_COLUMN = 0;
private final static int TEXT_START_ROW = LABEL_START_ROW;
private final static int TEXT_COLUMN = LABEL_WIDTH+1;
private final static int BUTTON_START_ROW = LABEL_START_ROW+9*LABEL_HEIGHT;
private final static int BUTTON_COLUMN = LABEL_COLUMN;
private final static int SEARCH_START_ROW = BUTTON_START_ROW+3;
final static String EMPTY_ARRAY_MESSAGE = "Hit ADD to add a new PRODUCT";
//Constructor-New instance of the JLabelTextFieldView.
public FinalInventoryGUI( Product productsIn)
{//Passing the frame title to JFrame, set the IconImage.
super("Welcome To The Inventory Program");
setLayout(layout);
//Copy the input array(products).
setProduct(productsIn);//maybe the title?????
//Start the display with the first element of the array.
index = 0;
//Build the GUI
buildGUI();
//Values
updateAllTextFields();
}//End of the constructor for building the GUI.
//Methods for copying the input of Product array to the GUIs private array
//variable
private void setInventoryArray(Product productsIn[])
products = new Product[productIn.length];
for (int i = 0; i<products.length; i++)
{//Creates A Product array element from the input array.
prodcuts[i] = new Product(productIn);
products[i] = new Product(productIn[i].productName(), productIn[i].itemNumber(),
productIn[i].unitStock(), productIn[i].unitPrice());
//System prints out a ineof the productsIn array to a string.
}//End of the for statment.
}//End for copying the array.
//A method for updating each of the GUIs fields.
private void updateAllTextFields()
if(products.length > 0)//Then update the JTextField display.
{// Update the product name text field.
productNameText.setText(products[index].productName());
//Update the Update the itemNumber text field.
itemNumberText.set(String.format("%d", products[index].itemNumber()));
//Update the title text field.
titleText.setText(dvd[index].title());
//Update the unitStock text field.
unitStockText.setText(String.format("%d",products[index].unitStock()));
//Update the unit price textField.
unitPriceText.setText(String.format("$%.2f",products[index].unitPrice()));
//Update the productValue textField.
productValueText.setText(String.format("$%.2f", products[index].productValue()));
//Update the restocking fee text field.
reStkfeeText.setText(String.format("$%.2f",reStkfee()));
//Update the total value of the inventory text field.
inventoryValueText.setText(String.formtat("$%.2f",Product.productValue(products)));
}//End of the if statement.
else//Put a special message in the fields.
{//Update the productName textField.
productNameText.setText(EMPTY_ARRAY_MESSAGE);
//Update the itemNumber textField
itemNumberText.setText(EMPTY_ARRAY_MESSAGE);
//Update the title textField.
titleText.setText(EMPTY_ARRAY_MESSAGE);
//Update the units in stock textField.
unitStockText.setText(EMPTY_ARRAY_MESSAGE);
//Update the unitPrice textFied.
unitPriceText.setText(EMPTY_ARRAY_MESSAGE);
//Update the productValue textField.
productValueText.setText(EMPTY_ARRAY_MESSAGE);
//Update the restocking fee textField.
reStkfeeText.setText(EMPTY_ARRAY_MESSAGE);
//Update the totatl inventoryValue textField.
inventoryValueText.setText(EMPTY_ARRAY_MESSAGE);
}//End else
}//Set the appropriate fields editable or uneditable.
private void setModifiableTextFieldsEnabled(Boolean state)
{//The fields of the product name, item number, unit price,
// and stock can be editable or non editable.
itemNumber.setEditable(state);
productName.setEditable(state);
unitPrice.setEditable(state);
unitStock.setEditable(state);
}//End setting of the modifiable textFields.
//Methods for the JButton methods.
private class ButtonHandler implements ActionListener
public void actionPerformed(ActionEvent event)
{//This is the first button being pressed by the user.
if(event.getSource()==firstButton)
handleFirstButton();
}//End if
else if(event.getSource()==previousButton)//Button previous is pressed by user.
handlePreviousButton();
}//End else if
else if (event.getSource()==nextButton)//Button next is pressed by user.
handleNextButton();
}//End else if.
else if (event.getSource()==lastButton)//Button last is pressed by the user.
handleLastButton();
}//End else if.
else if(event.getSource()==firstButton)
handleFirstButton();
}//End else if.
}//End metod of actionPeformed.
}//End class ButtonHandler
//Displaying the first element of the Product array
private void handlerFirstButton()
{//Setting the index to the first element in the array.
index = 0;
//Update and disable modification
updateAllFields();
setModifiableTextFieldsEnabled(false);
}//End method for handling the first button.
//Displaying the next element of the products array or wrap to the first.
private void handleNextButton()
{//Incrementation of the index.
index++;
//If the index exceeds the last valid array element, wrap around to the first
//element of the array.
if(index > products.length-1)
index = 0;
}//End if statment.
//Update and disable the modification.
updateAllFields();
setModifiableTextFieldsEnabled(false);
}//End method of handleNextButton.
private void handlePreviousButton()
index--;
if(index < 0)
index = products.length -1;
}//End if statment.
//Update and disabe modification.
updateAllTextFields();
setModifiableTextFieldsEnabled(false);
}//End method of handlePreviousButton.
private void handleLastButton()
index--;
if(index < products.length -1)
index = 2;
}//End if statment.
updateAllTextFields();
setMdifiableTextFieldsEnabled(false);
}//End method for handleLatButton
//The textFieldHandler class - handling the events of the buttonsmethods
private class TextFieldHandler implements ActionListener
public void actionPerformed(ActionEvent event)
{//The user pressed "ENTER" in the JTextField "title" text.
if(event.getSource() == itemNumber)
//HandleItemNumberTextField()is fired.
}//End the if statement.
//The user pressed "ENTER" in the JTextField "title" text.
else if (event.getSource() == titleText)
//HandleTitleTextField() is fired.
}//End the if statement.
//The user pressed "ENTER" in the JTextField "unitStoc" text.
else if(event.getSource() == unitStockText)
//HandleUnitStockTextField() is fired.
}//End the if statment
//The user pressed "ENTER" in the JtextField "unitPrice" text.
else if (event.getSource() == unitPriceText)
//HandleUnitPriceTextField() is fired.
}//End the if statment.
//The user pressed "ENTER" in the JTextField "Search" text.
else if(event.getSource() == searchText)
//HandleSearchTextField() is fired.
}//End the if statment.
}//End the method actionPerformed.
}//End the inner class TextFieldhandler.
//The GUI methods.
//Building the GUI.
private void BuildGUI()
{//Mthod for adding the LOGO.
buildLogo();
//Add the text fields and their labels.
buildLabels();
buildTextFields();
//Add the navigation and other buttons.
buildMainButtons();
//Provide value to the Fields.
updateAllTextFields();
//provide some setup to the frame.
setSize(FRAME_LENGTH, FRAME_WIDTH);
setLocation(FRAME-XLOC, FRAME_YLOC);
setResizable(false);
//PACK(); IS THIS NOT PART OF THE GUI ADDED AT THE END OR IS WHAT
//FOLLOWS THE SAME AS SAYING ".PACK()".
setDefaultCloseOperation(EXIT_ON_CLOSE);//DOES IT MATTER WHERE THIS LINE FALLS?
//WHEN I TRIED TO USE IT IN THE MAIN I RECEIVED AN ERROR AND THE SAME WHEN I
//PLACED IT IN THE CONSTRUCTOR--WHY?.
setVisible(true);
}//End of building the GUI.
//Addin the LOGO to the Frame.
private void buildLogo()
constraints.weightx = 2;
constraints.weigthy = 1;
logoLabel = new JLabel(new ImageIcon("O2K.jpg"));
logoLabel.setText("Products Inventory");
constraints.fill = GridBagConstraints.BOTH;
addToGridbag(logoLabel,2,2,LOGO_WIDTH, LOGO_HEIGHT);
//Creating a vertical space.
addToGridBag(new JLabel(""),LOGO_HEIGHT+1,0, LOGO_WIDTH, LABEL_WIDTH);
}//End the method with building the LOGO.
//Build the panel just containing the text.
private void buildLabels()
{//Set up if for readability).
int rows = 0;
int column = 0;
int width = 0;
int height = 0;
column = LABEL_COLUMN;
width = LABEL_WIDTH;
height = LABEL_HEIGHT;
constraints.weightx = 1;
constraints.weighty = 0;
constraints.fill = GridbagConstraints.Both;
//Create the name labes and name the TextFields.
productNameLabel = new JLabel("Product Name:");
productnamelabel.setLabelfor(productNameField);
productNameLabel.setLabelFor(productNameText);
productNameLabel.setToolTipText("Enter The Product Name Here");
row = Label_START_ROW;
addToGridBag(productNameLabel, row, column, width, height);
//Create the itemNumberLabel and TextField.
itemNumberLabel = new JLabel("Product Id:");
itemNumberLabel.setLabelFor(itemNumberText);
row += LABEL_HEIGHT;
addToGridBag(itemNumber, row, column, width, height);
//Create the title label for the Product and the title text field.
titleLabel = new JLabel("Inventory Of Products:");
titleLabel.setLabelFor(titleText);
row += LABEL_HEIGHT;
addToGridBag(titleLabel,row,column,width,height);
//Create the unitStock label and textField.
unitStockLabel = new JLabel("Units In Stock:");
unitStockLabel.setLabelFor(unitStockLabel);
row += LABEL_HEIGHT;
addToGridBag(unitStocklabel, row, column, height);
//Creat the unitPrice label and textField.
unitPriceLabel = new JLabel("Unit Price");
unitPriceLabel.setLabelFor(unitPriceLabel);
unitPriceLabel.setToolTipText("The Cost Of The Product");
row += LABEL_HEIGHT;
addToGridBag(unitPriceLabel, row, column, height);
//Create the productValue label and textField.
productValueLabel = new JLabel("Total Product Value:");
productValueLabel.setLabelFor(productValueLabel);
row += LABEL_HEIGHT;
addToGridBag(productValue, row, column, height);
//Create the restocking fee of 1.05% Label and textField.
reStkfeeLabel = new JLabel("Product Restock Fee:");
reStkfeeLabel.setLabelFor(reStkfeeLabel);
row+= LABEL_HEIGHT;
addToGridBag(reStkfee, row, column, height);
//Create a vertical space.
row += LABEL_HEIGHT;
//Create the Total Inventory Value label and textField.
inventoryValueLabel = new JLabel("Total Inventory Value:");
inventoryValueLabel.setLabelFor(inventoryValueLabel);
row += LABEL_HEIGHT;
addToGridBag(inventoryValue, row, column, height);
}//End the method for building the labels
//Build the methods for the TextFields.
private void buildTextFields()
{//Defining the variables
int row = 0;
int column = 0;
int width = 0;
int height = 0;
column = TEXT_COLUMN;
width = TEXT_WIDTH;
height = TEXT_HEIGHT;
constraints.fill = GridBagConstraints.BOTH;
constraints.weightx = 1;
TextFieldHandler handler = new TextFieldHandler();
productNameText = new JTextField("Product Name");
productNameText.setEditable(false);
row = TEXT_START_ROW;
addToGridBag(productNameText, row, column, height);
itemNumberText = new JTextField("Product Id");
itemNumberText.setEditable(false);
row = TEXT_START_ROW;
addToGridBag(itemNumberText, row, column, height);
titleText = new JTextField("Title");
titleText.addActionListener(handler);
titleText.setEditable(false);
row += TEXT_HEIGHT;
addToGridBag(titleText, row, column, height);
unitPriceText = new JTextField("Unit Price");
unitPriceText.addActionListener(handler);
unitPrice.setEditable(false);
row += TEXT_START_ROW;
addToGridBag(unitPriceText, row, column, height);
unitStockText = new JTextField("Units In Stock");
unitStockText.addActionListener(handler);
unitStockText.setEditable(false);
row += TEXT_START_ROW;
addToGridBag(unitStockText, row, column, height);
productValueText =new TextField("Product Value");
productValueText.addActionListener(handler);
productValueText.setEditable(false);
row += TEXT_START_ROW;
addToGridBag(productValueText, row, cloumn, height);
reStkfeeText =new JTextField("Restock Fee");
reStkfeeText.addActionListener(handler);
reStkfeeText.setEditable(false);
row += TEXT_START_ROW;
addToGridBag(reStkfeeText, row, cloumn, height);
//Creat vertical space.
row += TEXT_HEIGHT;
addToGridBag(new JLabel(""),row, column, height);
inventoryValueText =new TextField("Inventory Value");
inventoryValueText.addActionListener(handler);
inventoryValueText.setEditable(false);
row += TEXT_START_ROW;
addToGridBag(inventoryValueText, row, cloumn, height);
}//End the methods for building the TextFields.
//Add the main buttons to the frame.
private void buildMainButtons()
{//Declaraing the variables.
int row = 0;
int column = 0;
int width = 0;
int height = 0;
row =BUTTON_START_ROW;
column = BUTTON_COLUMN;
width = BUTTON_WIDTH;
height = BUTTON_HEIGHT;
constraints.weightx = 1;
constraints.weighty = 0;
//The constraints.fill = GridBagConstraints.HORIZONTAL;
ButtonHandler handler = new ButtonHandler();
//Creat a veritical space.
addToGridbag(new JLabel(""), row, column, width, height);
firstButton = new JButton("First");
firstButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(firstButton, row, column, width, height);
previousButton = new JButton("Previous");
previousButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(previousButton, row, column, width, height);
nextButton = new JButton("Next");
nextButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(nextButton, row, column, width, height);
lastButton = new JButton("Last");
lastButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(lastButton, row, column, width, height);
addButton = new JButton("Add");
addButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(addButton, row, column, width, height);
deleteButton = new JButton("Delete");
deleteButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(deleteButton, row, column, width, height);
saveButton = new JButton("Save");
saveButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(saveButton, row, column, width, height);
searchButton = new JButton("Search");
searchButton.addActionListener(handler);
row += LABEL_HEIGHT;
addToGridBage(searchButton, row, column, width, height);
//End methods for building the main butt0ns.
private void addToGridBag(Component component, int row, int column, int width, int height)
{ //Set up the upper-left corner of the component gridx and gridy.
constraints.gridx = column;
constraints.gridy = row;
//Set the numbers of rows and columns the components occupies.
constraints.gridwidth = width;
constraints.gridheight = height;
//set the constraints
Layout.setConstraints(component, constraints);
//Add the component to the JFrame.
add(component);
}//End method for addGridBag.
//End class JLabelTextFieldViewGui.
class Invetnory4
public static void main(String args[])
{ //An array variable.
Product[]inventory;
inventory = new Product[10];
//Create and pass control to the GUI
FinalInventory gui = new FinaInventoryGUI(inventory);
}//End method main
}//End class Inventory4
/*Inventory.java*/
/*Means for importing program packages*/
/*Beginning of the class type Inventory*/Hi Bryan,
I took your advice and decided to take a different approach to the problem I am having, I decided to stay somewhat with the basics with little knowledge I have about coding. I am new to this and I am trying to learn through the fire but it's getting hot so if you don't mind, can you tell me what I need to do to fix the error messages I am getting.
1. "else" without "if',
2. can't load my icon-a JPG
3. exception in thread amin
process complete.
4.Text area for displaying an iteration of the input
the code is not as long as the other one! any help will be appreciated. Also I am attaching the code to the GUI that does work but I can not seem to get the actionListener aspect to work. Thanks again.
//this one works and it serves as a model for what I am //trying to do in the fields. as well as designate a text area //where a each entry per iteration of input is displayed
* @(#)InventoryGUIFrame.java
* @author
* @version 1.00 2008/2/2
package components;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;
import javax.swing.event.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.text.*;
import java.awt.*;
* FormattedTextFieldDemo.java requires no other files.
* It implements a mortgage calculator that uses four
* JFormattedTextFields.
public class InventoryGUIFrame extends JFrame
String productName;
String itemNumber;
double unitPrice;
double unitStock;
//Labels to identify the fields
private JLabel productNamelabel;
private JLabel itemNumberlabel;
private JLabel unitPricelabel;
private JLabel unitStocklabel;
//Fields for data Entry
private JTextField productNameField;
private JTextField itemNumberField;
private JTextField unitPriceField;
private JTextField unitStockField;
//Adding the JButtons
JButton firstButton;
JButton nextButton;
JButton previousButton;
JButton searchButton;
JButton addButton;
JButton deleteButton;
JButton saveButton;
//Constructor
public InventoryGUIFrame()
super("Welcome To The Inventory Program");
setLayout(new FlowLayout());
setDefaultCloseOperation(EXIT_ON_CLOSE);
JFrame Frame = new JFrame();
Frame JPanel = new Frame();
JPanel JLabel= new JPanel();
TextArea area = new TextArea();
productNamelabel = new JLabel("PRODUCT NAME");
productNamelabel.setToolTipText("Name of the item you wish to calculate");
add(productNamelabel);
productNameField= new JTextField(8);
add(productNameField);
itemNumberlabel = new JLabel("PRODUCT NUMBER");
itemNumberlabel.setToolTipText("Number identifying the product");
add(itemNumberlabel);
itemNumberField =new JTextField(5);
add(itemNumberField);
unitPricelabel=new JLabel("PRODUCT PRICE");
unitPricelabel.setToolTipText("What is the cost of the product?:");
add(unitPricelabel);
unitPriceField = new JTextField(5);
add(unitPriceField);
unitStocklabel = new JLabel("UNITS IN STOCK");
unitStocklabel.setToolTipText("How many products in inventory?:");
add(unitStocklabel);
unitStockField = new JTextField(5);
add(unitStockField);
firstButton =new JButton("First");
add(firstButton);
nextButton = new JButton("Next");
add(nextButton);
previousButton = new JButton("Previous");
add(previousButton);
addButton = new JButton("Add");
add(addButton);
deleteButton = new JButton("Delete");
add(deleteButton);
saveButton = new JButton("Save");
add(saveButton);
searchButton = new JButton("Search");
add(searchButton);
public static void main(String args[])
InventoryGUIFrame frame = new InventoryGUIFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(740,150);
frame.setVisible(true);
class InventorySystem6
{ /*Declaration of products[] and the maximum storing capacity*/
private Product products[] = new Product[MAX_NUM_OF_PRODUCTS];
/*Prompts user to make another selection or exit program*/
private static final String STOP_COMMAND = "stop";
/*parameters defining maximun numbers of products available for storing in */
private static final int MAX_NUM_OF_PRODUCTS = 100;
/*Declaration of the variables */
String name;
String item;
double stock;
double price;
double reStkfee=1.05;
double pValue;
double iValue;
public InventorySystem6()
/*Empty Constructor*/
}/*Beginning of product input by the user*/
public void inputProductInfo()
{ /*Declaration of currency format*/
DecimalFormat Currency = new DecimalFormat();
Scanner input = new Scanner(System.in);
/*Beginning of the Loop*/
JOptionPane.showMessageDialog(null,"Welcome to the Inventory Program\n","Welcome to the Inventory Program\n",
JOptionPane.PLAIN_MESSAGE);
for(int i = 0; i<MAX_NUM_OF_PRODUCTS ; i++)
name = JOptionPane.showInputDialog( "What is the Product Name? ");
if(name.equalsIgnoreCase("stop"))
break;
String item = JOptionPane.showInputDialog("Enter the products ID");
String priceStr =JOptionPane.showInputDialog("Enter the products price");
double price=Double.parseDouble(priceStr);
String stockStr=JOptionPane.showInputDialog("Enter the units in stock " );
double stock = Double.parseDouble(stockStr);
double sum=price*stock;
JOptionPane.showMessageDialog(null,"The product value is:"+sum, "pValue",
JOptionPane.PLAIN_MESSAGE);
/* JOptionPane.showMessageDialog(null,"The Product Name is:"+productName, "productName"
,"\n","The Product Id is "+productId,"Product ID"
,"\n","The Unit Price is"+unitPrice,"Unit Price"
,"\n","The Units In Stock is"+unitStock,"UnitStock"
,"\n","The Product Value is"+productValue, "productValue"
,"\n","The Restocking Fee is "+reStockfee,"Restock Fee"
,"\n","The Inventory Value is"+inventoryValue,"Inventory Value"
,"\n","The Inventory Restock Fee is"+reStockfee,"Restock Fee"
,"\n",JOptionPane.PLAIN_MESSAGE);*/
//Product products[] = new Product[100];
products[i] = new Product();
products[i].setitem(item);
products[i].setname(name);
products[i].setprice(price);
products[i].setstock(stock);
products[i].setpValue(sum);
products[i].setreStkfee(reStkfee);
iValue += sum + products[i].getreStkfee();
public void displayProductInfo()
{ /*Initialization of the variable total inventory value*/
NumberFormat moneyFormat = NumberFormat.getCurrencyInstance();
for(int i = 0; i<MAX_NUM_OF_PRODUCTS ; i++)
Product product = products[i];
if(product==null)
System.out.println(products[i]);
break;
System.out.printf("product name: %s\n ", product.getname());
System.out.printf("product ID: %s \n", product.getitem());
System.out.printf("Unit Price: %s \n", moneyFormat.format(product.getprice()));
System.out.printf("units in Stock: %s \n", product.getstock());
System.out.printf("Total product Value: %s \n", moneyFormat.format(product.getpValue()));
System.out.printf("Restocking fee: %s \n", moneyFormat.format(product.getreStkfee()));
System.out.printf("Inventory Value: %s \n", iValue);
}/*Beginning of method main*/
public static void main(String[] args)
{/*Message*/
/*Means for retrieving and storing new data input into inventory program*/
InventorySystem6 JTableImageCreator = new InventorySystem6();
JTableImageCreator.displayProductInfo();
JTableImageCreator.inputProductInfo();
class Product
/*Declaration of and default value of specified variables*/
//private Product products[] = new Product[100];
private String item;
String name;
private double stock;
private double price;
private double pValue;
private double reStkfee;
//private String productNames[] = new String[1000]; //declaration of array "productNames" to store Product Names
private double iValue;
/*method defining the get and set values of each individual variable*/
public String getname()
{/*Mean for storing and retrieving input of name*/
return name;
}/*Means for setting the product name*/
public void setname(String name)
{/*null pointer argument exception defining metod for obtainng product name*/
this.name = name;
}/*Means for getting the units identifcation number inputted by the user*/
public String getitem()
{/*Means for returning the user input*/
return item;
}/*Means for setting the units identifcation */
public void setitem(String item)
{/*null pointer argument exception for setting the product identification number*/
this.item = item;
}/*Means for getting the units value input*/
public double getstock()
{/*Means for returning the variable of the units*/
return stock;
}/*Means for setting the units value*/
public void setstock(double stock)
this.stock = stock;
public double getprice()
{/*Means for returning the dollar value of the price of the unit(s)*/
return price;
}/*Means for setting and requesting user to input + dollar amt*/
public void setprice(double price)
this.price = price ;
}/*Means for setting the value of the total product value*/
public void setpValue(double pValue)
this.pValue = pValue+(price*stock);
}/*Means for getting the value of the product*/
public double getpValue()
{/*Means for returning the value*/
return pValue;
}/*Means for getting the TtlInventoryValue of products entered*/
public void setiValue(double iValue)
{/*Condition Statement*/
this.iValue=iValue;
public double getiValue()
return iValue;
public void setreStkfee(double reStkfee)
this.reStkfee=stock*price*1.05;
/*Means for setting restockin fee of the total products*/
public double getreStkfee()
{/*Means for calculating the restocking fee of each products units nStock*/
return reStkfee;
}/*Method for string the elements in [i] for display*/
public String toString()
{/*Means for returning defined string of elements in [i]*/
return "Product{" +
"item="+ item +
", name="+ name +
", stock="+ stock +
", price="+price +
", pValue="+pValue +
", reStkfee="+ reStkfee +
", iValue="+iValue+
}/*End set and get method*/
}/*End of class Product*/
/*Delcaration of the class type sortproductNames*/
class sortproductNames extends Product
{/*Declaration of the variable productName*/
protected String name;
/*Means for setting and getting values of the variable productName*/
public void setname(String name)
this.name = name;
public String getname()
return name;
public int compareTo(Object object)
{ // for sorting by product name
Product anotherProduct = (Product) object;
return name.compareTo( anotherProduct.name);
g.drawImage(image,0,0,200,50,0,0,image.getWidth(null), image.getHeight(null),null);
else;
g.drawString("O2K", 10,10);
* @(#)InventoryGUIFrame.java
* @author
* @version 1.00 2008/2/2
package components;
import java.io.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.imagio.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;
import javax.swing.event.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.text.*;
import java.awt.*;
* FormattedTextFieldDemo.java requires no other files.
* It implements a mortgage calculator that uses four
* JFormattedTextFields.
public class InventoryGUIPanelFrameTextArea extends JFrame
String productName;
String itemNumber;
double unitPrice;
double unitStock;
//Labels to identify the fields
private JLabel productNamelabel;
private JLabel itemNumberlabel;
private JLabel unitPricelabel;
private JLabel unitStocklabel;
//Fields for data Entry
private JTextField productNameField;
private JTextField itemNumberField;
private JTextField unitPriceField;
private JTextField unitStockField;
private Product[] products;
private int unitStock;
private int currentIndex=0;
//Adding the JButtons
JButton firstButton;
JButton nextButton;
JButton previousButton;
JButton searchButton;
JButton addButton;
JButton deleteButton;
JButton saveButton;
//Constructor
public InventoryGUIPanelFrameTextArea()
super("Welcome To The Inventory Program");
this.products = products;
this.numOfProducts = products;
JFrame JPanel = new JFrame();
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLayout(new GridLayout());
showLogo();
showLabels();
showInputFields();
showButtons();
public void showLogo()
O2K myLogo = new O2K();
this.add(myLogo);
public void showLabels()
JPanel panel = new JPanel();
panel.add(new JLabel("PRODUCT NAME"));
panel.add(new JLabel("ITEM NUMBER"));
panel.add(new JLabel("UNIT PRICE"));
panel.add(new JLabel("UNITS IN STOCK"));
this.add(panel);
public void showInputFields()
itemNumber =new JTextField(5);
itemNumber.setEditable(false);
productName= new JTextField(10);
productName.setEditable(false);
unitPrice= new JTextField(5);
unitPrice.setEditable(false);
unitStock = new JTextField(10);
unitStock.setEditable(false);
panel.setEditable(false);
panel.add(itemNumber);
panel.add(productName);
panel.add(unitPrice);
panel.add(unitStock);
this.add(panel);
public void showButtons()
JPanel panel = new JPanel();
first = new JButton("First");
next = new JButton("Next");
previous = new JButton("Previous");
add = new JButton ("Add");
delete = new JButton ("Delete");
search = new JButton ("Search");
save = new JButton ("Save");
panel.add(first);
panel.add(next);
panel.add(previous);
panel.add(add);
panel.add(delete);
panel.add(search);
panel.add(save);
panel.add(this);
ButtonActionHandler handler = new ButtonActionHandler();
first.addActionListener(handler);
next.addActionListener(handler);
previous.addActionListener(handler);
add.addActionListener(handler);
delete.addActionListener(handler);
search.addActionListener(handler);
save.addActinListener(handler);
this.add(panel);
setFields(0);
protected void paintComponent (Graphics g)
public void setFields(int i)
setItemNumber(i);
setProductName(i);
setUnitPrice(i);
setUnitStock(i);
public void setItemNumber( int i)
itemNumber.setText(products[i].getItemNumber());
public void setProductName(int i)
productname.setText(products[i].getProductName());
public void setUnitPrice( int i)
unitPrice.setText(String.valueOf(products[i].getunitPrice()));
public void setUnitStock(int i)
unitStock.setText(String.valueOf(products[i].getunitStock()));
private class ButtonActionHandler implements ActionListener
public void actionPerformed(ActionEvent event)
if(event.getSource()==first)
currentIndex=0;
setFields(currentIndex);
else if(event.getSource()==next)
currentIndex++;
if(currentIndex==unitStock);
currentIndex--;
setFields(currentIndex);
else if (event.getSource()==previous)
currentIndex--;
if(curentIndex < 0)
currentIndex=0;
setFields(currentIndex);
else if(event.getSource()==last)
currentIndex = unitStock -1;
setFields(currentIndex);
else if(event.getSource()==add)
currentIndex = productName ++;
setFields(currentIndex);
else if(event.getSource()==delete)
currentIndex= productName -1;
setFields(currentIndex);
else if (event.getSource()==search)
currentIndex=productName ++;
setFields(currentIndex);
else if (event.getSource()==save)
currentIndex=productName ++;
setFields(currentIndex);
public static void main(String args[])
JFrame mainFrame = new JFrame();
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.setSize(400,300);
mainFrame.setVisible(true);
class InventorySystem6
{ /*Declaration of products[] and the maximum storing capacity*/
private Product products[] = new Product[MAX_NUM_OF_PRODUCTS];
/*Prompts user to make another selection or exit program*/
private static final String STOP_COMMAND = "stop";
/*parameters defining maximun numbers of products available for storing in [i]*/
private static final int MAX_NUM_OF_PRODUCTS = 100;
/*Declaration of the variables */
String name;
String item;
double stock;
double price;
double reStkfee=1.05;
double pValue;
double iValue;
public InventorySystem6()
/*Empty Constructor*/
}/*Beginning of product input by the user*/
public void inputProductInfo()
{ /*Declaration of currency format*/
DecimalFormat Currency = new DecimalFormat();
Scanner input = new Scanner(System.in);
/*Beginning of the Loop*/
JOptionPane.showMessageDialog(null,"Welcome to the Inventory Program\n","Welcome to the Inventory Program\n",
JOptionPane.PLAIN_MESSAGE);
for(int i = 0; i<MAX_NUM_OF_PRODUCTS ; i++)
name = JOptionPane.showInputDialog( "What is the Product Name? ");
if(name.equalsIgnoreCase("stop"))
break;
String item = JOptionPane.showInputDialog("Enter the products ID");
String priceStr =JOptionPane.showInputDialog("Enter the products price");
double price=Double.parseDouble(priceStr);
String stockStr=JOptionPane.showInputDialog("Enter the units in stock " );
double stock = Double.parseDouble(stockStr);
double sum=price*stock;
JOptionPane.showMessageDialog(null,"The product value is:"+sum, "pValue",
JOptionPane.PLAIN_MESSAGE);
/* JOptionPane.showMessageDialog(null,"The Product Name is:"+productName, "productName"
,"\n","The Product Id is "+productId,"Product ID"
,"\n","The Unit Price is"+unitPrice,"Unit Price"
,"\n","The Units In Stock is"+unitStock,"UnitStock"
,"\n","The Product Value is"+productValue, "productValue"
,"\n","The Restocking Fee is "+reStockfee,"Restock Fee"
,"\n","The Inventory Value is"+inventoryValue,"Inventory Value"
,"\n","The Inventory Restock Fee is"+reStockfee,"Restock Fee"
,"\n",JOptionPane.PLAIN_MESSAGE);*/
//Product products[] = new Product[100];
products[i] = new Product();
products[i].setItemNumber(itemNumber);
products[i].setPrdocutName(productName);
products[i].setUnitPrice(unitPrice);
products[i].setUnitStock(unitStock);
products[i].setProductValue(sum);
products[i].setReStkfee(reStkfee);
inventoryValue += sum + products[i].getreStkfee();
public void displayProductInfo()
{ /*Initialization of the variable total inventory value*/
NumberFormat moneyFormat = NumberFormat.getCurrencyInstance();
for(int i = 0; i<MAX_NUM_OF_PRODUCTS ; i++)
Product product = products[i];
if(product==null)
System.out.println(products[i]);
break;
System.out.printf("product name: %s\n ", product.getproductName());
System.out.printf("product ID: %s \n", product.getitemNumber());
System.out.printf("Unit Price: %s \n", moneyFormat.format(product.getunitPrice()));
System.out.printf("units in Stock: %s \n", product.getunitStock());
System.out.printf("Total product Value: %s \n", moneyFormat.format(product.getproductValue()));
System.out.printf("Restocking fee: %s \n", moneyFormat.format(product.getreStkfee()));
System.out.printf("Inventory Value: %s \n", inventoryValue);
}/*Beginning of method main*/
public static void main(String[] args)
{/*Message*/
/*Means for retrieving and storing new data input into inventory program*/
InventorySystem6 JTableImageCreator = new InventorySystem6();
JTableImageCreator.displayProductInfo();
JTableImageCreator.inputProductInfo();
class Product
/*Declaration of and default value of specified variables*/
//private Product products[] = new Product[100];
protected String itemNumber;
protected String prodcutname;
protected double unitStock;
protected double unitPrice;
protected double productValue;
protected double reStkfee;
protected double inventoryValue;
//private String productNames[] = new String[1000]; //declaration of array "productNames" to store Product Names
/*method defining the get and set values of each individual variable*/
public String getproductName()
{/*Mean for storing and retrieving input of name*/
return productName;
}/*Means for setting the product name*/
public void setProductName(String productName)
{/*null pointer argument exception defining metod for obtainng product name*/
this.productName = ProductName;
}/*Means for getting the units identifcation number inputted by the user*/
public String getitemNumber()
{/*Means for returning the user input*/
return itemNumber;
}/*Means for setting the units identifcation */
public void setItemNumber(String itemNumber)
{/*null pointer argument exception for setting the product identification number*/
this.itemNumber = itemNumber;
}/*Means for getting the units value input*/
public double getunitStock()
{/*Means for returning the variable of the units*/
return unitStock;
}/*Means for setting the units value*/
public void setUnitStock(double unitStock)
this.unitStock = unitStock;
public double getunitPrice()
{/*Means for returning the dollar value of the price of the unit(s)*/
return unitPrice;
}/*Means for setting and requesting user to input + dollar amt*/
public void setUnitPrice(double unitPrice)
this.unitPrice = unitPrice ;
}/*Means for setting the value of the total product value*/
public void setProductValue(double prodcutValue)
this.prodcutValue = unitPrice*unitStock;
}/*Means for getting the value of the product*/
public double getproductValue()
{/*Means for returning the value*/
return productValue;
}/*Means for getting the TtlInventoryValue of products entered*/
public void setInvetnoryValue(double invetnoryValue)
{/*Condition Statement*/
this.inventoryValue=inventoryValue;
public double getinvetotyValue()
return productValue;
public void setReStkfee(double reStkfee)
this.reStkfee=stock*price*1.05;
/*Means for setting restockin fee of the total products*/
public double getreStkfee()
{/*Means for calculating the restocking fee of each products units nStock*/
return reStkfee;
}/*Method for string the elements in [i] for display*/
public String toString()
{/*Means for returning defined string of elements in [i]*/
return "Product{" +
"itemNumber="+ itemNumber +
", productName="+ productName +
", unitStock="+ unitStock +
", unitPrice="+unitPrice +
", productValue="+prodcutValue +
", reStkfee="+ reStkfee +
", inventoryValue="+inventoryValue+
}/*End set and get method*/
}/*End of class Product*/
/*Delcaration of the class type sortproductNames*/
class sortproductNames extends Product
{/*Declaration of the variable productName*/
protected String name;
/*Means for setting and getting values of the variable productName*/
public void setProdcutName(String productName)
this.productName = productName;
public String getproductName()
return productName;
public int compareTo(Object object)
{ // for sorting by product name
Product anotherProduct = (Product) object;
return productName.compareTo( anotherProduct.productName);
class myGraphics extends component
private BufferedImage image;
private boolean imageFound = true;
public myGraphics()
super();
try
image=ImageIO.read(new File("Logo.jpg"));
catch(IOException x)
x.printStackTrace();
imageFound = false;
public void paint(Graphics g)
g.drawImage(image,0,0,200,50,0,0,image.getWidth(null), image.getHeight(null),null);
else;
g.drawString("O2K", 10,10); -
I have a problem with the getRGB(int x, int y) method of the BufferedImage class :
I've load an image in it :
1:// b is my bufferedimage clas and myimage is an image
2:b.getGraphics().drawImage(myimage, 0, 0, this);
3:// g is the graphics object of my paint method
4:g.drawImage(b, 634, 225, null);
5:// This write -16777216 and 10, 10 is a black point
6:System.out.println(b.getRGB(10, 10));
I think the problem is at the second line. But i'm not sure. Can somebody help ?That's probably not what you meant. You can do a binary and:int r = (hex & 0x00FF0000) >> 16;
int g = (hex & 0x0000FF00) >> 8;
int b = (hex & 0x000000FF); -
URGENT: Heap space problems with image resizing
I'm creating a Swing program, with an InternalFrame-type interface. One of the frames contains a .gif file background and then primitive G2D objects are drawn on top of it.
The background image loads and displays fine at its original size, but I've added code for when the window resizes, and resizing the image causes the VM to give me an OutOfMemory exception.I tried this without any problem (with a gif of 137 kb):
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ImageFrame extends JFrame {
public ImageFrame() {
initComponents();
Toolkit T=this.getToolkit();
im0=T.getImage("C:\\sophie.gif");
MediaTracker mediaTracker = new MediaTracker(this);
mediaTracker.addImage(im0, 1);
try {
mediaTracker.waitForID(1);
} catch (InterruptedException ie) {
System.err.println(ie);
jInternalFrame1.add(new MyPanel());
private void initComponents() {
jDesktopPane1 = new JDesktopPane();
jInternalFrame1 = new JInternalFrame();
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
jInternalFrame1.setResizable(true);
jInternalFrame1.setVisible(true);
jInternalFrame1.addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent evt) {
jInternalFrame1ComponentResized(evt);
jInternalFrame1.setBounds(0, 0, width, height);
jDesktopPane1.add(jInternalFrame1, JLayeredPane.DEFAULT_LAYER);
getContentPane().add(jDesktopPane1, BorderLayout.CENTER);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
setBounds((screenSize.width-800)/2, (screenSize.height-500)/2, 800, 500);
private void jInternalFrame1ComponentResized(ComponentEvent evt) {
width=jInternalFrame1.getWidth();
height=jInternalFrame1.getHeight();
public static void main(String args[]) {
new ImageFrame().setVisible(true);
private int width=500,height=300;
private Image im0;
private JDesktopPane jDesktopPane1;
private JInternalFrame jInternalFrame1;
class MyPanel extends JPanel {
public void paint(Graphics g1) {
g1.drawImage(im0,0,0,width,height,this);
g1.dispose();
} -
Problem with loading image to Applet.
Hello. Im preety new to Java, and currently ive got problems with adding an image to my applet. I tried to make game, similar to Mario - a platform based one. I found a source code of something close to that, and wanted to test but i couldnt get images loading. Here's the code :
Main class :
package pl.wat.edu;
import java.applet.*;
import java.awt.*;
public class Main extends Applet implements Runnable{
Thread th;
private final int speed = 15;
private Level obecny_poziom;
private Image dbImage;
private Graphics dbg;
MediaTracker mt = new MediaTracker(this);
private Image ziemia1;
@Override
public void destroy() {
// TODO Auto-generated method stub
super.destroy();
@Override
public void init() {
// TODO Auto-generated method stub
super.init();
setSize(stale.wielkosc_apletu_szerokosc, stale.wielkosc_apletu_wysokosc);
//setBackground(Color.blue);
//ziemia1 = getImage(getCodeBase(), "g1.GIF");
obecny_poziom = new Pierwszy(this, this);
@Override
public void start() {
// TODO Auto-generated method stub
super.start();
// create new thread
th = new Thread (this);
// start thread
th.start ();
@Override
public void stop() {
// TODO Auto-generated method stub
super.stop();
// Thread stop
th.stop();
th = null;
public void run() {
// TODO Auto-generated method stub
while (true){
repaint();
try
Thread.sleep(speed);
catch (InterruptedException ex)
// do nothing
@Override
public void paint(Graphics arg0) {
// TODO Auto-generated method stub
super.paint(arg0);
//arg0.drawImage(ziemia1,10,10,this);
obecny_poziom.paintLevel(arg0);
public void update (Graphics g)
if (dbImage == null)
dbImage = createImage (this.getSize().width, this.getSize().height);
dbg = dbImage.getGraphics ();
dbg.setColor (getBackground ());
dbg.fillRect (0, 0, this.getSize().width, this.getSize().height);
dbg.setColor (getForeground());
paint(dbg);
g.drawImage (dbImage, 0, 0, this);
}and Level class that have draw levels from String rows :
package pl.wat.edu;
import java.applet.Applet;
import java.awt.*;
public abstract class Level {
//private LevelElement [] elements;
private WorldTile [] tiles;
private WorldTile[][] tablica_kolizji;
private Color [] colors;
private Component parent;
private int lewa_granica;
private int prawa_granica;
private int dlugosclevelu;
private Image ziemia = null;
private Image titi;
private Applet applet;
public abstract void resetLevel();
public Level(Component parent, Applet applet) {
super();
this.parent = parent;
this.applet = applet;
ziemia = applet.getImage(applet.getCodeBase(), "g1.GIF");
public void initializeLevel(String [] definitions){
tablica_kolizji = new WorldTile [stale.dlugosclevela] [definitions[0].length()];
lewa_granica = 0;
prawa_granica = stale.wielkosc_apletu_szerokosc;
int licznik_kratek = 0;
for(int i=0; i<definitions.length; i++){
char [] definition_line = definitions.toCharArray();
for(int j=0; j<definition_line.length; j++){
if (definition_line[j] == ':')
tablica_kolizji[i][j] = null;
else if (definition_line[j]== 'g'){
Ziemia tile = new Ziemia(j*stale.szerokoscTile, i*stale.wysokoscTile, stale.ziemia_id, ziemia, parent);
tablica_kolizji[i][j] = tile;
licznik_kratek = 0;
tiles = new WorldTile [licznik_kratek];
int licznik = 0;
for (int i = 0; i<tablica_kolizji.length; i++){
for(int j=0; j>tablica_kolizji[i].length; j++){
if (tablica_kolizji[i][j] != null){
tiles[licznik] = tablica_kolizji[i][j];
licznik++;
public void paintLevel(Graphics g)
try
// draw background
// draw all elements in elements array
for(int i=0; i<tiles.length; i++)
tiles[i].rysujTile(g);
catch(Exception ex)
// do nothing
Any ideas why this Image doesnt show up ?michali7x4s1 wrote:
Thats a code i found somewhere, tried to check how some things work.Have you used exceptions before? If not, please read the sun tutorial on them as they are very very important. Also, whether this is your code or someone else's doesn't matter as it's yours now, and you would be best served by never throwing out exceptions as is done in this code. It's like driving with a blindfold on and then wondering why you struck the tree. It's always best to go through the tutorials to understand code before using it. If it were my project, I'd do it in Swing, not AWT. Fortunately Sun has a great tutorial on how to code in Swing, and I suggest you head there as well. Best of luck. -
Problems with MemoryImageSource and createImage
Hi!
As my headline says it, I have a problem with MemoryImageSource and createImage. Whenever I create an image from a memory buffer I get an image that has the wrong dimensions: the width and height are swapped, but the image seems to be all right. I tried to create the image ov top of a JPanel using the Container methods. Any suggestions as of how to solve this problem would be greatly appreciated.
Here is the code that I am using:
public class ImageCanvas extends JPanel
private Dimension SD;
private Image Img;
byte [][] ImageBuffer=new [150][100];
public ImageCanvas()
this(100,150,ImgBuffer);
public ImageCanvas(int sx,int sy,byte[][] buff)
D=new Dimension(sx,sy);
SD=new Dimension(sx,sy);
setSize(D);
setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
setVisible(true);
int [] ipix=new int[sx*sy];
if(buff.equals(ImgBuffer)==false){
ImgBuffer=new byte[sy][sx];
for(int j=0;j<sy;j++){
System.arraycopy(buff[j],0,ImgBuffer[j],0,sx);
/* ARGB */
for(int j=0;j<sy;j++){
for(int i=0;i<sx;i++){
ipix[j*sx + i]=(0xFF000000 |
((ImgBuffer[j] << 16) & 0x00FF0000) |
((ImgBuffer[j][i] << 8) & 0x0000FF00) |
(ImgBuffer[j][i] & 0x000000FF));
Img = createImage(new MemoryImageSource(sx,sy,ipix,0,sx));
private void SetImage(byte[][] pixels)
int sx=pixels[0].length;
int sy=pixels.length;
SD.width=sx;
SD.height=sy;
if(ImgBuffer[0].length != sx && ImgBuffer.length != sy){
ImgBuffer = new byte[sy][sx];
for(int j=0;j<sy;j++){
System.arraycopy(pixels[j],0,ImgBuffer[j],0,sx);
int [] ipix=new int[sx*sy];
for(int i=0;i<sx;i++){
for(int j=0;j<sy;j++){
/* ARGB */
ipix[j*sx + i]=(0xFF000000 |
((ImgBuffer[j][i] << 16) & 0x00FF0000) |
((ImgBuffer[j][i] << 8) & 0x0000FF00) |
(ImgBuffer[j][i] & 0x000000FF));
Img = createImage(new MemoryImageSource(sx,sy,ipix,0,sx));
protected void paintComponent(Graphics g)
paint(g);
public void paint(Graphics g)
g.drawImage(Img,0,0,SD.height,SD.width,null);If you are going to ask question about your code, at least post a working code.
The code you posted contains so many syntactic and semantic errors that nobody would bother to fix. -
Cannot see image with drawImage()
I have been trying to get an image to display to a JFrame, but have been unable to do so, I have read a couple of tutorials and quite a few forum posts, but none of them have been able to help me to understand what I am doing wrong so I am hoping that someone here can help me. Im not sure exactly what people will and will not want from my code so I am posting the entire class, I can provide other classes if requested, following is the code:
import java.awt.*;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
public class myWindow extends JFrame
//Lets set up the basic thread stuff
private final static int FONT_SIZE = 24;
//lets create all those properties shall we
private Image bgImage = null;
private Image opaqueImage = null;
private Image transparentImage = null;
private Image translucentImage = null;
private Image antiAliasedImage = null;
private boolean imagesLoaded;
* This class sets the bunch of images into image objects. It then sets the
* imagesLoaded to true and tells the window to repaint itself with them.
public void loadImages()
//lets put all those images into Image objects shall we.
bgImage = loadImage("images/background.jpg");
opaqueImage = loadImage("images/opaque.png");
transparentImage = loadImage("images/transparent.png");
translucentImage = loadImage("images/translucent.png");
antiAliasedImage = loadImage("images/antialiased.png");
//The images have been loaded
imagesLoaded = true;
* Returns a boolean for the condition of the pictures, loaded or unloaded.
* @return The imagesLoaded value
public boolean getImagesLoaded()
return imagesLoaded;
* Sets the imagesLoaded attribute of the myWindow object
* @param isLoaded This will set the image loaded to the passed boolean.
public void setImagesLoaded(boolean isLoaded)
imagesLoaded = isLoaded;
* Takes the location of an image and places it into an Image object.
* @param fileName This is the location of the image to be set into an Image
* object
* @return Description of the Return Value
private Image loadImage(String fileName)
//This will put the passed string into an Image and returning it.
return new ImageIcon(fileName).getImage();
* This will place all the pictures onto the screen
* @param g This is the graphics that we are using
public void paint(Graphics g)
//Lets get all the text to be anti-aliased
if (g instanceof Graphics2D)
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
//Lets draw some images
if (imagesLoaded == true)
this.setBackground(Color.orange);
//first we set the background
g.drawImage(bgImage, 0, 0, null);
//Next we thow on a bunch of images
placeImage(g, opaqueImage, 0, 0, "Opaque");
placeImage(g, transparentImage, 320, 0, "Transparent");
placeImage(g, translucentImage, 0, 300, "Translucent");
placeImage(g, antiAliasedImage, 320, 300, "Anti-Aliased");
else
this.setBackground(Color.gray);
//Lets let the user know that we are loading the images.
g.drawString("Loading...", 5, FONT_SIZE);
* This will place an image onto the JFrame object.
* @param g This is the Graphics that is being used
* @param image This is the image that you want to draw
* @param x This is the width placement
* @param y This is the height placement
* @param caption This is waht it has to say about your image.
private void placeImage(Graphics g, Image image, int x, int y, String caption)
//lets put the passed image onto the screen.
g.drawImage(image, x, y, null);
//Now lets put down the caption for the picture.
g.drawString(caption, x + 5, y + FONT_SIZE + image.getHeight(null));
}import java.awt.*;
import javax.swing.*;
public class MWTest extends JPanel
//Lets set up the basic thread stuff
private final static int FONT_SIZE = 24;
//lets create all those properties shall we
private Image bgImage = null;
private Image opaqueImage = null;
private Image transparentImage = null;
private Image translucentImage = null;
private Image antiAliasedImage = null;
private boolean imagesLoaded;
public MWTest()
this.setBackground(Color.orange);
imagesLoaded = true;
loadImages();
* This class sets the bunch of images into image objects. It then sets the
* imagesLoaded to true and tells the window to repaint itself with them.
public void loadImages()
//lets put all those images into Image objects shall we.
bgImage = loadImage("images/background.jpg");
opaqueImage = loadImage("images/opaque.png");
transparentImage = loadImage("images/transparent.png");
translucentImage = loadImage("images/translucent.png");
antiAliasedImage = loadImage("images/antialiased.png");
* Returns a boolean for the condition of the pictures, loaded or unloaded.
* @return The imagesLoaded value
public boolean getImagesLoaded()
return imagesLoaded;
* Sets the imagesLoaded attribute of the myWindow object
* @param isLoaded This will set the image loaded to the passed boolean.
public void setImagesLoaded(boolean isLoaded)
imagesLoaded = isLoaded;
* Takes the location of an image and places it into an Image object.
* @param fileName This is the location of the image to be set into an Image
* object
* @return Description of the Return Value
private Image loadImage(String fileName)
//This will put the passed string into an Image and returning it.
//return new ImageIcon(fileName).getImage();
// one problem with the single line of code is that you do not
// get any feedback for load failure
ImageIcon icon = new ImageIcon(fileName);
Image image = icon.getImage();
int status = icon.getImageLoadStatus();
if(status == MediaTracker.ABORTED || status == MediaTracker.ERRORED)
System.out.println("image loading failed for " + fileName);
imagesLoaded = false;
return image;
* This will place all the pictures onto the screen
* @param g This is the graphics that we are using
public void paintComponent(Graphics g)
super.paintComponent(g);
//Lets get all the text to be anti-aliased
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
//Lets draw some images
if (imagesLoaded)
//first we set the background
g.drawImage(bgImage, 0, 0, null);
//Next we thow on a bunch of images
placeImage(g, opaqueImage, 0, 0, "Opaque");
placeImage(g, transparentImage, 320, 0, "Transparent");
placeImage(g, translucentImage, 0, 300, "Translucent");
placeImage(g, antiAliasedImage, 320, 300, "Anti-Aliased");
else
//Lets let the user know that we failed to load the images.
g2.setPaint(Color.gray);
g2.fillRect(0,0,getWidth(),getHeight());
g2.setPaint(Color.red);
g2.setFont(g2.getFont().deriveFont((float)FONT_SIZE));
g.drawString("Loading failed...", 25, 100);
* This will place an image onto the JFrame object.
* @param g This is the Graphics that is being used
* @param image This is the image that you want to draw
* @param x This is the width placement
* @param y This is the height placement
* @param caption This is waht it has to say about your image.
private void placeImage(Graphics g, Image image, int x, int y, String caption)
//lets put the passed image onto the screen.
g.drawImage(image, x, y, null);
//Now lets put down the caption for the picture.
g.drawString(caption, x + 5, y + FONT_SIZE + image.getHeight(null));
public static void main(String[] args)
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(new MWTest());
f.setSize(400,400);
f.setLocation(200,200);
f.setVisible(true);
} -
Problems with Overlay Layout - can anyone spot something wrong/missing?
Hi folks, I'm developing a tool that allows you to draw rectangles around objects on an image. The rectangles are then saved, and you can move between images. For some reason, though my rectangles are not drawing on the panel. I am using the Overlay Layout. Can anyone spot what I'm doing wrong? (The TopPanel canvas appears to be there, as it's taking input from the mouse - the problem is simply that the red rectangles are not drawing on the panel). Please help!!
So you know, there is a JFrame in another class which adds an instance of the ObjectMarker panel to it. It also provides buttons for using the next and previous Image methods.
Any other general advice is appreciated too.
* Object_Marker.java
* Created on 07 April 2008, 15:38
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import javax.imageio.ImageIO;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.OverlayLayout;
import javax.swing.event.MouseInputAdapter;
* @author Eric
public class ObjectMarker extends javax.swing.JPanel {
private static final long serialVersionUID = 6574271353772129556L;
File directory;
String directory_path;
Font big = new Font("SansSerif", Font.BOLD, 18);
List<File> file_list = Collections.synchronizedList(new LinkedList<File>());
String[] filetypes = { "jpeg", "jpg", "gif", "bmp", "tif", "tiff", "png" };
// This Hashmap contains List of Rectangles, allowing me to link images to collections of rectangles through the value 'index'.
public static HashMap<Integer, List<Rectangle>> collection = new HashMap<Integer, List<Rectangle>>();
BufferedImage currentImage;
Thread thread;
Integer index = 0;
OverlayLayout overlay;
private TopPanel top;
private JPanel pictureFrame;
String newline = System.getProperty("line.separator");
* Creates new form Object_Marker
* @throws IOException
public ObjectMarker(File directory) {
System.out.println("Got in...");
this.directory = directory;
File[] temp = directory.listFiles();
directory_path = directory.getPath();
// Add all the image files in the directory to the linked list for easy
// iteration.
for (File file : temp) {
if (isImage(file)) {
file_list.add(file);
initComponents();
try {
currentImage = ImageIO.read(file_list.get(index));
} catch (IOException e) {
System.out.println("There was a problem loading the image.");
// 55 pixels offsets the height of the JMenuBar and the title bar
// which are included in the size of the JFrame.
this.setSize(currentImage.getWidth(), currentImage.getHeight() + 55);
public String getImageList() {
// Allows me to build the string gradually.
StringBuffer list = new StringBuffer();
list.append("Image files found in directory: \n\n");
for (int i = 0; i < file_list.size(); i++) {
list.append((((File) file_list.get(i))).getName() + "\n");
return list.toString();
private void initComponents() {
top = new TopPanel();
pictureFrame = new javax.swing.JPanel();
OverlayLayout ol = new OverlayLayout(this);
this.setLayout(ol);
this.add(top);
this.add(pictureFrame);
* private void initComponents() {
* javax.swing.GroupLayout pictureFrameLayout = new
* javax.swing.GroupLayout(pictureFrame);
* pictureFrame.setLayout(pictureFrameLayout);
* pictureFrameLayout.setHorizontalGroup(
* pictureFrameLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
* .addGap(0, 497, Short.MAX_VALUE) ); pictureFrameLayout.setVerticalGroup(
* pictureFrameLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
* .addGap(0, 394, Short.MAX_VALUE) );
* javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
* this.setLayout(layout); layout.setHorizontalGroup(
* layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
* .addComponent(pictureFrame, javax.swing.GroupLayout.DEFAULT_SIZE,
* javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) );
* layout.setVerticalGroup(
* layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
* .addComponent(pictureFrame, javax.swing.GroupLayout.DEFAULT_SIZE,
* javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) ); }
* This function returns the extension of a given file, for example "jpg" or
* "gif"
* @param f
* The file to examine
* @return String containing extension
public static String getExtension(File f) {
String ext = null;
String s = f.getName();
int i = s.lastIndexOf('.');
if (i > 0 && i < s.length() - 1) {
ext = s.substring(i + 1).toLowerCase();
} else {
ext = "";
return ext;
public String getDetails() {
saveRectangles();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < file_list.size(); i++) {
try{
int count = collection.get(i).size();
if (count > 0) {
sb.append(file_list.get(i).getPath() + " "); // Add the
// filename of
// the file
sb.append(count + " "); // Add the number of rectangles
for (int j = 0; j < collection.get(i).size(); j++) {
Rectangle current = collection.get(i).get(j);
String coordinates = (int) current.getMinX() + " "
+ (int) current.getMinY() + " ";
String size = ((int) current.getMaxX() - (int) current
.getMinX())
+ " "
+ ((int) current.getMaxY() - (int) current
.getMinY()) + " ";
String result = coordinates + size;
sb.append(result);
sb.append(newline);
} catch (NullPointerException e){
// Do nothing. "int count = collection.get(i).size();"
// will try to over count.
return sb.toString();
private boolean isImage(File f) {
List<String> list = Arrays.asList(filetypes);
String extension = getExtension(f);
if (list.contains(extension)) {
return true;
return false;
/** Draw the image on the panel. * */
public void paint(Graphics g) {
if (currentImage == null) {
g.drawString("No image to display!", 300, 240);
} else {
// Draw the image
g.drawImage(currentImage, 0, 0, this);
// Write the index
g.setFont(big);
g.drawString(index + 1 + "/" + file_list.size(), 10, 25);
public void nextImage() throws IOException {
if (index < file_list.size() - 1) {
printOutContents();
System.out.println("Index: " + index);
saveRectangles();
index++;
currentImage = ImageIO.read(file_list.get(index));
this
.setSize(currentImage.getWidth(),
currentImage.getHeight() + 55);
top.setSize(this.getSize());
top.rectangle_list.clear();
if (collection.size() > index) {
loadRectangles();
repaint();
private void saveRectangles() {
// If the current image's rectangles have not been changed, don't do
// anything.
if (collection.containsKey(index)) {
System.out.println("Removing Index: " + index);
collection.remove(index);
collection.put(index, top.getRectangleList());
System.out.println("We just saved " + collection.get(index).size()
+ " rectangles");
System.out.println("They were saved in HashMap Location " + index);
System.out.println("Proof: ");
List<Rectangle> temp = collection.get(index);
for (int i = 0; i < temp.size(); i++) {
System.out.println("Rectangle " + (i + 1) + ": " + temp.get(i));
// If the rectangle list has changed, set the list the current index
// as the new list.
private void loadRectangles() {
System.out.println("We just loaded index " + index
+ " into temporary memory.");
System.out.println("Proof: ");
List<Rectangle> temp = collection.get(index);
top.rectangle_list = collection.get(index);
for (int i = 0; i < temp.size(); i++) {
System.out.println("Rectangle " + (i + 1) + ": " + temp.get(i));
private void printOutContents() {
System.out.println();
System.out.println("Contents printout...");
for (int i = 0; i < collection.size(); i++) {
for (Rectangle r : collection.get(i)) {
System.out.println("In collection index: " + i + " Rectangle "
+ r.toString());
System.out.println();
public void previousImage() throws IOException {
if (index >= 1) {
printOutContents();
System.out.println("Index: " + index);
saveRectangles();
index--;
currentImage = ImageIO.read(file_list.get(index));
this
.setSize(currentImage.getWidth(),
currentImage.getHeight() + 55);
top.setSize(this.getSize());
top.rectangle_list.clear();
if (index >= 0) {
loadRectangles();
repaint();
public void removeLastRectangle() {
// This method removes the most recent rectangle added.
try {
int length = collection.get(index).size();
collection.get(index).remove(length - 1);
} catch (NullPointerException e) {
try {
top.rectangle_list.remove(top.rectangle_list.size() - 1);
} catch (IndexOutOfBoundsException ioobe) {
JOptionPane.showMessageDialog(this, "Cannot undo any more!");
* Class developed from SSCCE found on Java forum:
* http://forum.java.sun.com/thread.jspa?threadID=647074&messageID=3817479
* @author 74philip
class TopPanel extends JPanel {
List<Rectangle> rectangle_list;
private static final long serialVersionUID = 6208367976334130998L;
Point loc;
int width, height, arcRadius;
Rectangle temp; // for mouse ops in TopRanger
public TopPanel() {
setOpaque(false);
rectangle_list = Collections
.synchronizedList(new LinkedList<Rectangle>());
TopRanger ranger = new TopRanger(this);
addMouseListener(ranger);
addMouseMotionListener(ranger);
public List<Rectangle> getRectangleList() {
List<Rectangle> temporary = Collections
.synchronizedList(new LinkedList<Rectangle>());
temporary.addAll(rectangle_list);
return temporary;
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setPaint(Color.red);
// Draw all the rectangles in the rectangle list.
for (int i = 0; i < rectangle_list.size(); i++) {
g2.drawRect(rectangle_list.get(i).x, rectangle_list.get(i).y,
rectangle_list.get(i).width, rectangle_list.get(i).height);
if (temp != null) {
g2.draw(temp);
public void loadRectangleList(List<Rectangle> list) {
rectangle_list.addAll(list);
public void addRectangle(Rectangle r) {
rectangle_list.add(r);
class TopRanger extends MouseInputAdapter {
TopPanel top;
Point offset;
boolean dragging;
public TopRanger(TopPanel top) {
this.top = top;
dragging = false;
public void mousePressed(MouseEvent e) {
Point p = e.getPoint();
top.temp = new Rectangle(p, new Dimension(0, 0));
offset = new Point();
dragging = true;
top.repaint();
public void mouseReleased(MouseEvent e) {
dragging = false;
// update top.r
System.out.println(top.getRectangleList().size() + ": Object added: "
+ top.temp.toString());
top.addRectangle(top.temp);
top.repaint();
public void mouseDragged(MouseEvent e) {
if (dragging) {
top.temp.setBounds(top.temp.x, top.temp.y, e.getX() - top.temp.x, e
.getY()
- top.temp.y);
top.repaint();
}Regards,
EricAlright so I fixed it! I created a new class called BottomPanel extends JPanel, which I then gave the responsibility of drawing the image. I gave it an update method which took the details of the currentImage and displayed it on the screen.
If anybody's interested I also discovered/solved a problem with my mouseListener - I couldn't drag backwards. I fixed this by adding tests looking for negative widths and heights. I compensated accordingly by reseting the rectangle origin to e.getX(), e.getY() and by setting the to original_origin.x - e.getX() and original_origin.y - e.getY().
No problem!
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