Displaying image on frame
Dear sir,
how can we display image on JFrame (swing).
Thanks
Read this on how to add an image on to a JPanel: [Background Image On J Panel|http://faq.javaranch.com/java/BackgroundImageOnJPanel]
And then simply make the JPanel the contentPane.
Similar Messages
-
Open and display image in MVC layout
Hello!
I cant figure out how I shall do this in an MVC layout:
The program request user to open an image file that are then displayed in a JLabel
My setup at the moment resolve in a nullpointerexeption because it dont get any actual image file, but I dont understand what I have missed.
I can not post the whole code fo you to run because it is to big, so I post the part that are the most important. please have a look.
PicturePanel
//Import Java library
import javax.swing.*;
import java.awt.*;
public class PicturePanel extends JPanel {
//Variables
private ImageIcon picture;
//Method to get information of the selected file
PicturePanel (String fileName) {
picture = new ImageIcon (fileName); //Get the filename
int w = picture.getIconWidth(); //Get the image with
int h = picture.getIconHeight(); //Get the image height
//Set preferable size for the image (Use the properties for the selected image)
setPreferredSize(new Dimension(w, h));
setMinimumSize(new Dimension(w, h));
setMaximumSize(new Dimension(w, h));
//Method to draw the selected image
protected void paintComponent(Graphics g) {
super.paintComponent(g); //We invoke super in order to: Paint the background, do custom painting.
g.drawImage(picture.getImage(), 0, 0, this); //Draw the image at its natural state
}From my model:
//Local attributes
boolean check = false; //Used to see if a statement is true or not
PicturePanel pp;
JFileChooser fc;
int returnVal;
//newFile in File menu
public void newFile() {
//Open a file dialog in users home catalog
fc = new JFileChooser();
//In response to a button click:
returnVal = fc.showOpenDialog(pp);
System.out.println("You pressed new in file menu");
}From my controler:
//User press "New" in File menu
else if (user_action.equals("New")) {
//Call method in model class
model.newFile();
//Update changes
if (model.returnVal == JFileChooser.APPROVE_OPTION) {
System.out.println("Hello1");
File f = model.fc.getSelectedFile();
if (model.pp != null)
model.pp = new PicturePanel(f.getAbsolutePath());
System.out.println("Hello2");
//Display image (Here is line 83)
view.setImage_DisplayArea(model.pp);
System.out.println("Hello3");
}From my view:
//Sets the image to be displayed on the image_display area (Here is line 302)
public void setImage_DisplayArea(PicturePanel pp) {
image_display.add(pp);
}The complet error:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1015)You pressed new in file menu
Hello1
Hello2
at java.awt.Container.add(Container.java:351)
at View_Inlupp2.setImage_DisplayArea(View_Inlupp2.java:302)
at Control_Inlupp2.actionPerformed(Control_Inlupp2.java:83)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1882)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2202)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.AbstractButton.doClick(AbstractButton.java:334)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1050)
at apple.laf.CUIAquaMenuItem.doClick(CUIAquaMenuItem.java:119)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1091)
at java.awt.Component.processMouseEvent(Component.java:5602)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3129)
at java.awt.Component.processEvent(Component.java:5367)
at java.awt.Container.processEvent(Container.java:2010)
at java.awt.Component.dispatchEventImpl(Component.java:4068)
at java.awt.Container.dispatchEventImpl(Container.java:2068)
at java.awt.Component.dispatchEvent(Component.java:3903)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4256)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3936)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3866)
at java.awt.Container.dispatchEventImpl(Container.java:2054)
at java.awt.Window.dispatchEventImpl(Window.java:1801)
at java.awt.Component.dispatchEvent(Component.java:3903)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)Edited by: onslow77 on Dec 16, 2009 5:00 PM
Edited by: onslow77 on Dec 16, 2009 5:04 PMHello again!
Anyone that can help me figure out how to implement this in an MVC layout, I feel stuck.
I post a little program that open and display an image file so that you better can understand what I whant to do.
ShowImage
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.filechooser.*;
public class ShowImage extends JFrame{
//Variables
JFileChooser fc = new JFileChooser();
PicturePanel pp = null;
ShowImage () {
super("Show"); //Title
//Create the GUI
JPanel top = new JPanel();
add(top, BorderLayout.NORTH);
JButton openBtn = new JButton("Open");
top.add(openBtn);
openBtn.addActionListener(new Listner());
//Settings for the GUI
setDefaultCloseOperation(EXIT_ON_CLOSE);
pack();
setVisible(true);
class Listner implements ActionListener {
public void actionPerformed(ActionEvent ave) {
int answer = fc.showOpenDialog(ShowImage.this);
if (answer == JFileChooser.APPROVE_OPTION){
File f = fc.getSelectedFile();
//Check
System.out.println(f);
System.out.println(pp);
if (pp != null)
remove(pp); //Clean so that we can open another image
//Check
System.out.println(pp);
//Set the PicturePanel
pp = new PicturePanel(f.getAbsolutePath());
//Check
System.out.println(pp);
//Add PicturePanel to frame
add(pp, BorderLayout.CENTER);
validate();
pack();
repaint();
//Main
public static void main(String[] args) {
new ShowImage();
}PicturePanel
//Import Java library
import javax.swing.*;
import java.awt.*;
public class PicturePanel extends JPanel {
//Variables
private ImageIcon picture;
//Method to get information of the selected file
PicturePanel (String fileName) {
picture = new ImageIcon (fileName); //Get the filename
int w = picture.getIconWidth(); //Get the image with
int h = picture.getIconHeight(); //Get the image height
//Set preferable size for the image (Use the properties for the selected image)
setPreferredSize(new Dimension(w, h));
setMinimumSize(new Dimension(w, h));
setMaximumSize(new Dimension(w, h));
//Method to draw the selected image
protected void paintComponent(Graphics g) {
super.paintComponent(g); //We invoke super in order to: Paint the background, do custom painting.
g.drawImage(picture.getImage(), 0, 0, this); //Draw the image at its natural state
}//The endEdited by: onslow77 on Dec 16, 2009 7:30 PM -
Background picture n problem on display other JInternal frame
beginer;
this is my code below n i compile it n the picture display correctly, but it seems to hide other internal frame as well, what wrong with my code :(, the problem is been specified between ? symbols
public class InternalFrameDemo extends JFrame implements ActionListener {
JDesktopPane desktop;
public InternalFrameDemo() {
super("InternalFrameDemo");
int inset = 50;
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
setBounds(inset, inset,
screenSize.width - inset*2,
screenSize.height - inset*2);
Toolkit kit = Toolkit.getDefaultToolkit();
Image icon = kit.getImage("ADD.gif");
setIconImage(icon);
//Set up the GUI.
desktop = new JDesktopPane(); //a specialized layered pane
createFrame(); //create first "window"
setContentPane(desktop);
setJMenuBar(createMenuBar());
//Make dragging a little faster but perhaps uglier.
desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
ImageIcon image = new ImageIcon("abc.jpg");
JLabel background = new JLabel(image);
background.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());
getLayeredPane().add(background, new Integer(Integer.MIN_VALUE) );
JPanel panel = new JPanel();
panel.setOpaque(false);
setContentPane( panel );
protected JMenuBar createMenuBar() {
JMenuBar menuBar = new JMenuBar();
//Set up the menu item
return menuBar;
public void actionPerformed(ActionEvent e) {
else {
quit();
protected void createFrame() {
Books frame = new Books();
frame.setVisible(true);
desktop.add(frame);
try {
frame.setSelected(true);
catch (java.beans.PropertyVetoException e) {}
protected void quit() {
System.exit(0);
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
catch (Exception e) {
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
InternalFrameDemo frame = new InternalFrameDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Display the window.
frame.setVisible(true);
tanz.This might be what you are trying to do:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.plaf.*;
public class TestInternalFrame extends JFrame
ImageIcon icon;
public TestInternalFrame()
icon = new ImageIcon("????.jpg");
JDesktopPane desktop = new JDesktopPane()
public void paintComponent(Graphics g)
Dimension d = getSize();
g.drawImage(icon.getImage(), 0, 0, d.width, d.height, null);
getContentPane().add( desktop );
final JInternalFrame internal =
new JInternalFrame( "Internal Frame", true, true, true, true );
desktop.add( internal );
internal.setLocation( 50, 50 );
internal.setSize( 300, 300 );
internal.setVisible( true );
public static void main(String args[])
TestInternalFrame frame = new TestInternalFrame();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.setSize(400, 400);
frame.setVisible(true);
} -
I am using ITunes 11.05.5 on Windows 7 Professional. Have thousands of videos ... MP4 Music Videos. I make my own "ARTWORK" (on JPG per artist for all music videos by that artist). I place the artwork in the file by "GET INFO", "ARTWORK", copy in my own JPG Image. I confirm that there is only one image in the ARTWORK and that it is the correct image. When I save and go back to the GET INFO everthing is fine. When I view it in MS Explorer or in ID3-TAG the ARTWORK is also fine. This process works fine for most everything but unexplainably fails and I can't fix it on certain occasions.
THE FAILURE: Let me explain the problem that occurs on rare occasions (and once it occurs I can't ever fix it). Lets say I have 5 music videos from the artist, John Jones. I embed my own artwork (the same ARTWORK for all music videos from this same artist, John Jones) and all five videos group under the proper. same ARTWORK in the GRID VIEW. Now, I obtain another music video from John Jones, once again I put the same ARTWORK on this file and now when I go into GRID VIEW it displays a POSTER FRAME (of that artist, John Jones) that I have never seen (although it must have come from the video since it is a POSTER FRAME of John Jones) ..... from that point on, all six music videos from John Jones also display that same ARTWORK (the wrong poster frame - but same poster frame for all John Jones music videos) even tho the first five were displaying properly before (but not longer). It is as if a POSTER FRAME of John Jones is in cache and associated with the artist John Jones and can not be deleted.
I have tried uninstalling and reinstalling ITunes, but it doesn't work. I have tried deleting the new Music Video that I added and that started the problem (number six); hoping the the original five would return to nomal ... but that does not work.
Any suggestions would be appreciated.this one is actually a really rare symptom of a flaky connection to the ipod on a Windows PC. there's more going on in terms of hardware on nanos and 5th gens than in the earlier models ... so if the connection is flaky to precisely the right/wrong degree, itunes will see the ipod, but misidentify it as an earlier version of ipod.
tracking down the cause of the flakiness can be tricky ... as you already know ...
just checking. have you tried connecting with a different (known-good) USB cable? does that seem to have any impact on the rate of occurence of the problem? -
How to adjust R/W rules to display images inline?
Hi all,
out of the box, when I insert an image in a paragraph (DITA 1.2) then FrameMaker 12 uses the "below line" display setting. I need to display it inline, at the insertion point.
When I adjust the settings of the anchored frame then the inline setting is lost when saving the XML file. So evidently I need to adjust the R/W rules.
I tried to add a corresponding inline rule but had no success so far, does anybody know what needs to be done? It seems like a quite common requirement to display images inline.
RobertRobert, Scott,
I just did a non-DITA test of the r/w rule:
element "Image" {
is fm graphic element;
attribute "placement" {
is fm property position;
value "inline" is fm property value inline;
value "break" is fm property value bottom;
My test document had two Image elements, one positioned at the insertion point, one at the bottom of the column. In both cases, the placement attribute was set correctly when I saved the document as XML and interpreted correctly when I opened the XML document.
Robert, does your EDD define the placement attribute? If so (and you want to keep it), you need to add the subrule
is fm attribute;
to the attribute subrule. However, since setting the attribute in the FM document does not affect the anchored frame position, so I recommend deleting the attribute from the EDD. The r/w rule I suggest assumes the attribute is XML-only.
Before you make that change, though, I wonder if the value "inline" appears in italics in the Structure View. Italics indicates the default value for an attribute that has not been set. That would explain why you see the value in the Structure View but not in the attribute editor.
--Lynne -
How to display images in the Personal Java?
Guys,
please help me to display the images in gif format in the standalone application using PersonalJava.
with regards,
AminJDK:1.1.8; Personaljava:1.1Beta
Following is my program,it can not only display image but also scroll image that biger than Panel or Canvas.
import java.awt.*;
import java.awt.event.*;
//ImageCanvas object is container keeping Image
class ImageCanvas extends Canvas
private Image image,errorimage;
Container pappy;
public ImageCanvas(Image i,Container parent)
errorimage = Toolkit.getDefaultToolkit().getImage("error.gif");
image=i;
pappy = parent;
//following 5 lines can make image display smoothly
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(image, 0);
try { tracker.waitForID(0); }
catch (InterruptedException e) {}
public void paint(Graphics g)
if(image.getWidth(this)==-1)
image=errorimage;
Dimension d = getSize();
this.setSize(image.getWidth(this),image.getHeight(this));
//Critical syntex for refresh container
pappy.layout();
pappy.repaint();
g.drawImage(image, 0, 0,this);
public class ScrollingImage implements ActionListener
{ Frame frame;
ScrollPane sp;
Image im;
public static void main(String[] args)
ScrollingImage tests= new ScrollingImage();
tests.go();
public void go()
frame = new Frame();
frame.setLayout(new BorderLayout());
sp = new ScrollPane();
im =Toolkit.getDefaultToolkit().getImage("001.gif");
//please notice following line,critical syntex to display image,I took 2 days to find it.
sp.add(new ImageCanvas(im,sp));
sp.setSize(240,290);
frame.add(sp, BorderLayout.CENTER);
//following 5 lines make frame be able to close
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
frame.pack();
frame.setVisible(true); -
Help with displaying images (gif, jpeg...) within a JFrame (or similar)
Hi all,
i'm new to the forum and i'll be granted if you kind gentlemen/women could use some advices for my gui home application.
My purpose is to display a static image in a container (i'd prefer to use javax.swing objects, but if you think that java.awt is more suitable for my app, please feel free to tell me about...). I used a modified code from one of the Java Tutorial's examples, tht actually is an applet and displays images as it is using the paint() method. I just can't realize how to set the GraphicContext in a JFrame or a JPanel to contain the image to display, without using applets. Following part of the code I use (a JButton will fire JApplet start, JApplet is another class file called Apple.java):
class DMToolz extends JFrame {
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JButton jButton = null;
private JComboBox jComboBox = null;
private JMenuItem jMenuItem = null;
private JMenuBar jJMenuBar = null;
private JMenu jMenu = null;
private JMenu jMenu1 = null;
public int w=10, h=10;
public String filename;
* @throws HeadlessException
public DMToolz() throws HeadlessException {
// TODO Auto-generated constructor stub
super();
initialize();
public DMToolz(String arg0) throws HeadlessException {
super(arg0);
// TODO Auto-generated constructor stub
initialize();
* This method initializes jButton
* @return javax.swing.JButton
private JButton getJButton() {
if (jButton == null) {
jButton = new JButton();
jButton.setBounds(new Rectangle(723, 505, 103, 38));
jButton.setText("UrcaMado'");
jButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
/**************SCRIVERE QUI IL NOME DEL FILE CON L'IMMAGINE DA CARICARE*******************/
filename = "reference table player2.gif";
java.net.URL imgURL = DMToolz.class.getResource("images/"+filename);
BufferedImage img = null;
try {
img = ImageIO.read(imgURL);
w = img.getWidth();
h = img.getHeight();
System.out.println("*DM* Immagine letta - W:"+w+" H:"+h);
} catch (Exception ex) {System.out.println("*DM* Immagine non letta");}
JApplet a = new Apple();
a.setName(filename);
JFrame f = new JFrame ("UrcaBBestia!");
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
f.getContentPane().add(a);
f.setPreferredSize( new Dimension(w,h+30) );//30 � (circa) l'altezza della barra del titolo del frame
f.pack();
f.setVisible(true);
return jButton;
public class Apple extends JApplet {
private static final long serialVersionUID = 1L;
final static Color bg = Color.white;
final static Color fg = Color.black;
final static Color red = Color.red;
final static Color white = Color.white;
public void init() {
//Initialize drawing colors
setBackground(bg);
setForeground(fg);
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
try {
String filename = this.getName(); //uso il nome dell'applet come riferimento al nome del file da caricare
java.net.URL imgURL = DMToolz.class.getResource("images/"+filename);
BufferedImage img = ImageIO.read(imgURL);
if (img.equals(null)) {System.out.println("IMG null!");System.exit(0);}
System.out.println("IMG letta");
int w = img.getWidth();
int h = img.getHeight();
resize(w,h);
g2.drawImage(img,
0,0,Color.LIGHT_GRAY,
null);// no ImageObserver
} catch (Exception ex) {ex.printStackTrace();
System.out.println("Immagine non letta.");System.exit(0);}
}//end classPlease never mind about some italian text, used as reminder....
Thanks in advance.Read the Swing tutorial on "How to Use Labels" or "How to Use Icons" for working examples:
http://java.sun.com/docs/books/tutorial/uiswing/TOC.html
By the way you should never override the paint() method. Custom painting (not required in this case) is done by overriding the paintComponent(...) method in Swing. Overriding paint() is an old AWT trick. -
Won't display images - Its probably something simple!
Hey ,
Ive been trying for ages, looked throught the tutorials (i have even tried just using java pasted from the site for one of the simple programs) and looking through old forum questions but can't find out why my GUI wont display images. It compiles fine but then when i run the program ... no pics!
I suspect its something to do with the directory, i have tired:
- putting the images in the same directory as the java classes,
- putting in the entire image location paths (for this i get illegal characters error because it has '\' in the path but i get round this using '\\' ) but still no joy.
Like i said am just using the example programme from the site so i know its correct, Any ideas??
Thanx
LisaHere is a simple program to test:
JFrame frame = new JFrame();
JLabel label = new JLabel("image.jpg");
frame.getContenPane()..add( label );
frame.pack();
frame.setVisible(true);a) Place "image.jpg" is the same directory as the source and class files.
b) Don't use any package names for you class.
c) Compile using javac, not through and ide or anything.
d) Make sure your classpath includes ".", so it will search the current directory. -
How to display image using from open dialog box?
I've developed a program that can display image by named the file that I want to display in my program.
But how can I display an image from an Open Dialog Box?
I attch here with my program.
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.filechooser.*;
public class SuDisplayTool6 extends JFrame implements InternalFrameListener,ActionListener
JTextArea display1;
JDesktopPane desktop;
JInternalFrame displayWindow;
JInternalFrame listenedToWindow;
static final String SHOW = "Show Image";
static final int desktopWidth = 800;
static final int desktopHeight = 600;
private static final int kControlX = 88 ;
private DrawingPanel panel;
public SuDisplayTool6(String title)
super("Internal Frame");
desktop = new JDesktopPane();
desktop.putClientProperty("JDesktopPane.dragMode","outline");
desktop.setPreferredSize(new Dimension(desktopWidth, desktopHeight));
setContentPane(desktop);
addMenu();
createDisplayWindow();
desktop.add(displayWindow);
Dimension displaySize = displayWindow.getSize();
displayWindow.setSize(desktopWidth, displaySize.height);
protected void createDisplayWindow()
JButton b1 = new JButton("Show Image");
b1.setActionCommand(SHOW);
b1.addActionListener(this);
display1 = new JTextArea(3,30);
display1.setEditable(false);
JScrollPane textScroller = new JScrollPane(display1);
textScroller.setPreferredSize(new Dimension(200,75));
textScroller.setMinimumSize(new Dimension(10,10));
displayWindow = new JInternalFrame("Header Graph",true,false,true,true);
JPanel contentPane = new JPanel();
contentPane.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.Y_AXIS));
contentPane.add(Box.createRigidArea(new Dimension(0,5)));
contentPane.add(textScroller);
b1.setAlignmentX(CENTER_ALIGNMENT);
contentPane.add(b1);
displayWindow.setContentPane(contentPane);
displayWindow.pack();
displayWindow.show();
protected void createListenedToWindow()
listenedToWindow = new JInternalFrame("Image",true,true,true,true);
listenedToWindow.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
listenedToWindow.setSize(800,450);
panel = new DrawingPanel();
listenedToWindow.setContentPane(panel);
public void internalFrameClosing(InternalFrameEvent e)
public void internalFrameClosed(InternalFrameEvent e)
listenedToWindow = null;
public void internalFrameOpened(InternalFrameEvent e)
public void internalFrameIconified(InternalFrameEvent e)
public void internalFrameDeiconified(InternalFrameEvent e)
public void internalFrameActivated(InternalFrameEvent e)
public void internalFrameDeactivated(InternalFrameEvent e)
public void actionPerformed(ActionEvent e)
if (e.getActionCommand().equals(SHOW))
if (listenedToWindow == null)
createListenedToWindow();
listenedToWindow.addInternalFrameListener(this);
desktop.add(listenedToWindow);
listenedToWindow.setLocation(desktopWidth/2 - listenedToWindow.getWidth()/2,
desktopHeight - listenedToWindow.getHeight());
listenedToWindow.show();
else
public static void main(String[] args)
JFrame frame = new SuDisplayTool6("Su Display Tool");
frame.addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
frame.pack();
frame.setVisible(true);
private void addMenu()
JMenuBar menuBar;
JMenu menu, submenu;
JMenuItem menuItem;
final JFileChooser fc = new JFileChooser();
fc.addChoosableFileFilter(new ImageFilter());
menuBar = new JMenuBar();
setJMenuBar(menuBar);
menu = new JMenu("File");
menuBar.add(menu);
menuItem = new JMenuItem("Open...");
menu.add(menuItem).addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
int returnVal = fc.showOpenDialog(SuDisplayTool6.this);
menuItem = new JMenuItem("Save");
menu.add(menuItem);
menuItem = new JMenuItem("Save As...");
menu.add(menuItem).addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
int returnVal = fc.showSaveDialog(SuDisplayTool6.this);
menuItem = new JMenuItem("Close");
menu.add(menuItem);
menu.addSeparator();
menuItem = new JMenuItem("Exit");
menu.add(menuItem).addActionListener(new WindowHandler());
menu = new JMenu("Edit");
menuBar.add(menu);
menu = new JMenu("View");
menuBar.add(menu);
menuItem = new JMenuItem("Zoom In");
menu.add(menuItem);
menuItem = new JMenuItem("Zoom Out");
menu.add(menuItem);
menu.addSeparator();
submenu = new JMenu("Header");
menuItem = new JMenuItem("CDPX");
submenu.add(menuItem);
menuItem = new JMenuItem("SX");
submenu.add(menuItem);
menuItem = new JMenuItem("CX");
submenu.add(menuItem);
menu.add(submenu);
menu = new JMenu("Help");
menuBar.add(menu);
menuItem = new JMenuItem("About");
menu.add(menuItem).addActionListener(new WindowHandler());
private class WindowHandler extends WindowAdapter implements ActionListener
public void windowClosing(WindowEvent e)
System.exit(0);
public void actionPerformed(ActionEvent e)
if(e.getActionCommand().equalsIgnoreCase("exit"))
System.exit(0);
else if(e.getActionCommand().equalsIgnoreCase("About"))
JOptionPane.showMessageDialog(null,"This program is written by Nenny Ruthfalydia.","About",JOptionPane.PLAIN_MESSAGE);
class DrawingPanel extends Panel
final ImageIcon imageIcon = new ImageIcon("image8.jpg");
Image image = imageIcon.getImage();
public void paint (Graphics g)
g.drawImage(image, 10, 10, this);so much wrong with this post...
a) use the code tags to format the code. Now it is an unreadable mess
b) scriptlets in your JSP. I don't even want to look at that mess. Learn how to combine servlets and JSPs to create clean, readable and maintainable code in which view logic and business logic are separated. The rule: no java code in your JSP, only tags and EL expressions (learn about JSTL).
So you get a blank screen. When you do "view source" in your browser, do you see anything there? If nothing, check if you are behind a proxy server. The solution to a post of not too long ago was that the blank screen was being caused by faulty proxy server settings (the user figured it out himself, I don't know what was done to solve it).
If all this fails you will have to do some debugging magic using your favorite IDE. It will probably be something stupid you are overlooking in the code. It is annoying, but debugging code that does not work is a big part of your job. Better get good at it. -
How to display image efficiently in JPanel.............
i have following piece of code used to load and display image on jpanel when application starts.
the problem is that
image is not loaded efficiently,
also it covers other panels added in frame.
and scrollbar of panel does not work to show parts of image.
i want to efficiently load the image and to fit in in my panel and also to scroll bar to work proper with image.
looking for any nice suggestion
public class MainFrame extends JFrame
Image image = Toolkit.getDefaultToolkit().createImage("c:\\form-3.jpg");
javax.swing.JScrollBar jScrollBar1 = new JScrollBar();
BorderLayout borderLayout1 = new BorderLayout();
JPanel jPanel1 = new JPanel();
JPanel jPanel2 = new JPanel();
JButton jButton1 = new JButton();
JButton jButton2 = new JButton();
public MainFrame()
try
{ jbInit(); } catch (Exception ex)
{ ex.printStackTrace(); }
public static void main(String[] args)
MainFrame mainFrame = new MainFrame();
jBInit Method defined here
public void paint(Graphics g)
g.drawImage(image,0,0,jPanel1);
Message was edited by:
@tifYou have overided the paint method on JFrame then you are drowing on entire Frame.
Instead you have to override the paintComponent method of a JPanel class or use a JLabel with the image -
How to display images real-time?
How, (using CVI, NI-IMAQ and IMAQ Vision) can I duplicate the Grab function seen in MAX; in other words, I want to display images at the frame rate of my camera (30 fps). I've come across several examples on this site, the best of which seemed to be "Performing Real-time Image Acquisition, Averaging, and Logging" (realtime_image_averaging.zip), but this example, built with LabView, can't find several vi's (IMAQ WindDraw.vi, IMAQ Convert.vi, IMAQ Add.vi, IMAQ Divide.
vi, IMAQ WriteFile.vi) needed to run it. I have LabView 5.1, NI_IMAQ 2.6 and IMAQ Vision for LabView 4.01). Please note that, although I'll accept LabView, I prefer a CVI solution.
Thanks in advance for any help.
'til next we type...
JesseI would strongly recommend upgrading to the current version of Vision. There have been major improvements since the version you have. I suspect the examples have improved significantly also, which would probably be worth the cost of the upgrade. I have attached a simple grab and display example in LabVIEW that I saved to LV 5, but I can't be sure it will work with the old version of Vision. Since you want to use CVI, it probably won't do you much good anyway.
Bruce
Bruce Ammons
Ammons Engineering
Attachments:
HL_Grab_in_IMAQ_Vision_display.vi 36 KB -
How can we paste image(jpg or any other) on the frame.
I mean "how to add an image to frame"
I have written a very simple code:
import java.awt.*;
public class PP extends Frame{
private Image blue_ball;
private Toolkit tk;
public PP(){
super("IMAGE TEST");
setSize(500,500);
tk=Toolkit.getDefaultToolkit();
blue_ball=tk.getImage("blue.png");
public void paint(Graphics g){
System.out.println(g.drawImage(blue_ball,0,0,this));
public static void main(String s[]){
PP p = new PP();
p.show();
I have "blue.png" image(60*60) in the directory where the "PP.java" is present.
But it is not displaying image on the frame.
The g.drawImage() method returns true if image is drawn , false if not.
when i run this prog , it prints false.
Please , let me me know if there is any peculiar way of doing it.
Message was edited by:
abhaykumar -
A component is not able to display Image UIElements anymore
Dear Developers,
I am discovering today that a component that I have developped is not able to display the Image UIElement anymore. In the workbench, the element is displayed correctly ( it has no binding of its attributes to the context and the URL of the source is static).
Its parent container is the ROOTUIELEMENTCONTAINER and it is visible (all parameters are the default).
No Image can be displayed anymore. This is very strange. My other UIelements in the view are displayed correctly and seem to be working nicely (events, actions, methods calls ...).
Can you help me ?
Best Regards,
Olivier MATT
PS: I tried accessing the same URL with a Image UIElement in another component and it works fine. It seems that the generated coding Javascript/HTML is invalid (when I try to display the sourcecode of the application/frame, IE informs me that the source contains errors). For Information, I am running Netweaver SP 11.Hi again,
I think I have found where my problem is. I have right clicked on th eimage and try to set some settings in the browser while using the application (on the displayed image).
Now the image is not displayed anymore (according to the settings) but I dont know where I can delete these setting values. I tried removing my cookies but it did not help.
Any idea?
Sincerely,
Olivier MATT -
Hi everyone, I am a newbie for labview. I just wanna ask you about image display in labview. Now I can display one image in my front panel. I open the file path and display it. First thing I wanna do is that is it possible to display on monitor full screen not on front panel and second thing is that how can I display images in folder and display it about 2 seconds delay in between? Pls kindly help me.
Thanks millions.
Solved!
Go to Solution.Hi there,
-I don't know whether the image full display can be possible or not, Any reason why you are asking for such requirement?
-The other question about reading files in a folder and display for 2sec can be done like shown in image.
-I've attached vi in lv 12 if needed.
-Next time, please post your vision related queries in Machine vision Board.
Thanks
uday,
Please Mark the solution as accepted if your problem is solved and help author by clicking on kudoes
Certified LabVIEW Associate Developer (CLAD) Using LV13
Attachments:
Image_read_folder.vi 43 KB -
Display image in java.awt.List
hello guys,
How i can display image in java.awt.List means listbox. give me sample code. if you have
Waiting for your favorable reply.
Regards,
Bhavesh Kharwajava.awt.List you can not.
javax.swing.JLast you can.
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