Java Swing, Displaying Images in Labels
Im rather new to java programming. Im finding it difficult to display images, as they never seem to appear when they should. When I downloaded the examples in the java tutorial (but not the picture files), changed the picture files to picture files I have in my computer, it also didn't display any pictures. My guess is that this is something to do with what the java tutorial said:
"Generally, applications provide their own set of images used as part of the application, as is the case with the images used by many of our demos", and says that the createImageIcon() method should only be used when the images are part of the application. Could anyone explain to me how to make the set of images part of the application?
When I tried using the new ImageIcon("") method also no picture appeared. Could anyone explain this to me as well?
Sorry for bothering you all with such a probably trivial matter. Thank you :)
It should, as far as I understand what you are describing. You have the bin directory, where you type "java <classname>" to start your app, and if the images are in that directory, all you should need is the filename. But generally, the image filename you use should be an absolute file path, or a path relative to the directory the application starts in.
There are other ways, however, which might be more useful for applications, notably loaded as resource...
new ImageIcon(getClass().getResource("xyz.gif"));
Where xyz.gif is in an directory or Jar file in the classpath.
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}//The endEdited by: onslow77 on Dec 16, 2009 7:30 PM -
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Object currentPosition;
Color currentColor;
Dimension boardSize = new Dimension(600, 600);
JLayeredPane layeredPane;
JPanel board;
JPanel box;
JLabel chessPiece;
int xAdjustment;
int yAdjustment;
public ChessBoard()
// Use a Layered Pane for this this application
layeredPane = new JLayeredPane();
getContentPane().add(layeredPane);
layeredPane.setPreferredSize( boardSize );
layeredPane.addMouseListener( this );
layeredPane.addMouseMotionListener( this );
// Add a chess board to the Layered Pane
board = new JPanel();
// set "board" to the lowest layer (default_layer)
layeredPane.add(board, JLayeredPane.DEFAULT_LAYER);
board.setLayout( new GridLayout(8, 8) );
board.setPreferredSize( boardSize );
board.setBounds(0, 0, boardSize.width, boardSize.height);
addShade();
addPiece();
public void addShade()
for (int i = 0; i < 64; i++)
box = new JPanel( new BorderLayout() );
board.add( box, BorderLayout.CENTER );
if( ((i / 8) % 2) == 0)
if( (i % 2) ==0)
box.setBackground(Color.lightGray);
} else {
box.setBackground( Color.white);
} else {
if( (i % 2) ==0)
box.setBackground(Color.white);
} else {
box.setBackground(Color.lightGray);
//Method for adding chess pieces to the board
public void addPiece()
// Add a few pieces to the board
//black pieces
for (int i = 0; i < 64; i++)
//adding black pieces
if (i < 8)
String fileName = i + ".gif";
JLabel blackPieces = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( i );
panel.add( blackPieces );
//adding black pones
if ((i > 7) && (i < 16))
String fileName = "8.gif";
JLabel blackPones = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( i );
panel.add( blackPones );
//jump to white position (Component 48)
if (i == 16) i = 48;
//adding white pones
if(( i > 47 ) && (i < 56))
JLabel whitePones = new JLabel( new ImageIcon("48.gif") );
JPanel panel = (JPanel)board.getComponent( i );
panel.add( whitePones );
//adding white pieces
if (i > 55)
String fileName = i + ".gif";
JLabel whitePieces = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( i);
panel.add( whitePieces );
** Add the selected chess piece to the dragging layer so it can be moved
public void mousePressed(MouseEvent e)
chessPiece = null;
Component c = board.findComponentAt(e.getX(), e.getY());
c.setBackground(Color.red);
if (c instanceof JPanel) return;
Point parentLocation = c.getParent().getLocation();
xAdjustment = parentLocation.x - e.getX();
yAdjustment = parentLocation.y - e.getY();
chessPiece = (JLabel)c;
chessPiece.setLocation(e.getX() + xAdjustment, e.getY() + yAdjustment);
chessPiece.setSize(chessPiece.getWidth(), chessPiece.getHeight());
layeredPane.add(chessPiece, JLayeredPane.DRAG_LAYER);
** Move the chess piece around
public void mouseDragged(MouseEvent me)
if (chessPiece == null) return;
chessPiece.setLocation(me.getX() + xAdjustment, me.getY() + yAdjustment);
** Drop the chess piece back onto the chess board
public void mouseReleased(MouseEvent e)
Component c = board.findComponentAt(e.getX(), e.getY());
int x = (int)c.getBounds().getX();
int y = (int)c.getBounds().getY();
System.out.println(c.getLocation());
System.out.println(x + " "+ y);
c.setBackground(currentColor);
if (chessPiece == null) return;
chessPiece.setVisible(false);
if (c instanceof JLabel)
Container parent = c.getParent();
//remove the piece that is capture
parent.remove(0);
parent.add( chessPiece );
else
Container parent = (Container)c;
parent.add( chessPiece );
chessPiece.setVisible(true);
public void mouseClicked(MouseEvent e) {}
public void mouseMoved(MouseEvent e) {}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
private static void createAndShowGUI()
//Make sure we have nice window decorations
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new ChessBoard();
frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
//Display the window
frame.pack();
frame.setResizable( false );
frame.setLocationRelativeTo( null );
frame.setVisible(true);
public static void main(String[] args)
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI
javax.swing.SwingUtilities.invokeLater( new Runnable()
public void run()
createAndShowGUI();
}import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
public class ChessBoardRx extends JFrame implements MouseListener, MouseMotionListener
Object currentPosition;
Color currentColor;
Dimension boardSize = new Dimension(600, 600);
JLayeredPane layeredPane;
JPanel board;
JPanel box;
JLabel chessPiece;
int xAdjustment;
int yAdjustment;
Container lastParent;
public ChessBoardRx()
// Use a Layered Pane for this this application
layeredPane = new JLayeredPane();
getContentPane().add(layeredPane);
layeredPane.setPreferredSize( boardSize );
layeredPane.addMouseListener( this );
layeredPane.addMouseMotionListener( this );
// Add a chess board to the Layered Pane
board = new JPanel();
// set "board" to the lowest layer (default_layer)
layeredPane.add(board, JLayeredPane.DEFAULT_LAYER);
board.setLayout( new GridLayout(8, 8) );
board.setPreferredSize( boardSize );
board.setBounds(0, 0, boardSize.width, boardSize.height);
addShade();
addPiece();
// populateBoard();
public void addShade()
for (int i = 0; i < 64; i++)
box = new JPanel( new BorderLayout() );
board.add( box, BorderLayout.CENTER );
if( ((i / 8) % 2) == 0)
if( (i % 2) ==0)
box.setBackground(Color.lightGray);
} else {
box.setBackground( Color.white);
} else {
if( (i % 2) ==0)
box.setBackground(Color.white);
} else {
box.setBackground(Color.lightGray);
//Method for adding chess pieces to the board
public void addPiece()
// Add a few pieces to the board
//black pieces
for (int i = 0; i < 64; i++)
//adding black pieces
if (i < 8)
String fileName = i + ".gif";
JLabel blackPieces = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( i );
panel.add( blackPieces );
//adding black pones
if ((i > 7) && (i < 16))
String fileName = "8.gif";
JLabel blackPones = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( i );
panel.add( blackPones );
//jump to white position (Component 48)
if (i == 16) i = 48;
//adding white pones
if(( i > 47 ) && (i < 56))
JLabel whitePones = new JLabel( new ImageIcon("48.gif") );
JPanel panel = (JPanel)board.getComponent( i );
panel.add( whitePones );
//adding white pieces
if (i > 55)
String fileName = i + ".gif";
JLabel whitePieces = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( i);
panel.add( whitePieces );
private void populateBoard() {
int[][] pos = {
{ 9, 7, 5, 1, 3, 5, 7, 9 },
{ 8, 6, 4, 0, 2, 4, 6, 8 }
for(int j = 0; j < 8; j++) {
String fileName = "chessImages/" + pos[0][j] + ".jpg";
JLabel label = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( j );
panel.add( label );
for(int j = 8; j < 16; j++) {
String fileName = "chessImages/" + 11 + ".jpg";
JLabel label = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( j );
panel.add( label );
for(int j = 56, k = 0; j < 64; j++, k++) {
String fileName = "chessImages/" + pos[1][k] + ".jpg";
JLabel label = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( j );
panel.add( label );
for(int j = 48; j < 56; j++) {
String fileName = "chessImages/" + 10 + ".jpg";
JLabel label = new JLabel( new ImageIcon( fileName ) );
JPanel panel = (JPanel)board.getComponent( j );
panel.add( label );
** Add the selected chess piece to the dragging layer so it can be moved
public void mousePressed(MouseEvent e)
chessPiece = null;
Component c = board.findComponentAt(e.getX(), e.getY());
c.setBackground(Color.red);
if (c instanceof JPanel) return;
lastParent = c.getParent();
Point parentLocation = c.getParent().getLocation();
xAdjustment = parentLocation.x - e.getX();
yAdjustment = parentLocation.y - e.getY();
chessPiece = (JLabel)c;
chessPiece.setLocation(e.getX() + xAdjustment, e.getY() + yAdjustment);
chessPiece.setSize(chessPiece.getWidth(), chessPiece.getHeight());
layeredPane.add(chessPiece, JLayeredPane.DRAG_LAYER);
** Move the chess piece around
public void mouseDragged(MouseEvent me)
if (chessPiece == null) return;
chessPiece.setLocation(me.getX() + xAdjustment, me.getY() + yAdjustment);
** Drop the chess piece back onto the chess board
public void mouseReleased(MouseEvent e)
Component c = board.findComponentAt(e.getX(), e.getY());
if(c == null) {
layeredPane.remove(chessPiece);
lastParent.add(chessPiece);
Rectangle r = lastParent.getBounds();
chessPiece.setLocation(r.x+xAdjustment, r.y+yAdjustment);
lastParent.validate();
lastParent.repaint();
return;
int x = (int)c.getBounds().getX();
int y = (int)c.getBounds().getY();
System.out.println(c.getLocation());
System.out.println(x + " "+ y);
c.setBackground(currentColor);
if (chessPiece == null) return;
chessPiece.setVisible(false);
if (c instanceof JLabel)
Container parent = c.getParent();
//remove the piece that is capture
parent.remove(0);
parent.add( chessPiece );
else
Container parent = (Container)c;
parent.add( chessPiece );
chessPiece.setVisible(true);
public void mouseClicked(MouseEvent e) {}
public void mouseMoved(MouseEvent e) {}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
private static void createAndShowGUI()
//Make sure we have nice window decorations
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new ChessBoardRx();
frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
//Display the window
frame.pack();
frame.setResizable( false );
frame.setLocationRelativeTo( null );
frame.setVisible(true);
public static void main(String[] args)
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI
javax.swing.SwingUtilities.invokeLater( new Runnable()
public void run()
createAndShowGUI();
} -
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. -
Displaying image in JApplets which runs on Tomcat?
hi everyone,,,
i've JApplet including label have an image
MyLabel.setIcon(new ImageIcon("images/java.jpeg"));the applets should runs on server - Tomcat -
first i got error in Java Console
<-----filepermission images/java.jpeg read----->
and i put permission in my java.policy
located in security folder
after that; applet run but the image doesnot displayed on the label????
any help please,,,
thanx in advancei think the problem is with java.policy
here is my java.policy file
/* AUTOMATICALLY GENERATED ON Mon Feb 11 11:39:08 EET 2008*/
/* DO NOT EDIT */
grant codeBase "file:/usr/java/jre1.6.0_03/lib/ext/*" {
permission java.security.AllPermission;
permission java.io.FilePermission "<<ALL FILES>>", "read, write, execute, delete";
grant codeBase "file:/usr/java/packages/lib/ext/*" {
permission java.security.AllPermission;
permission java.io.FilePermission "<<ALL FILES>>", "read, write, execute, delete";
grant {
permission java.io.FilePermission "images/java.jpeg", "read, write, execute";
grant {
permission java.io.FilePermission "java.jpeg", "read, execute, delete, write";
}; -
Displaying image on the button
hi there,
well i wanna display image on my applet button from the relative path how do i do.
here is my code which i tried gave me nullpointer exception and i did put this code my applets constructor:
URL url1 = new URL(getDocumentBase().toString()+"b.gif");
ImageIcon image1 = new ImageIcon(url1);
JButton button = new JButton(image1);SanderSander
the code u have given failed to work well here is the code which i tried :
ImageIcon image1 = new ImageIcon(getImage(getCodeBase(),"b.gif"));
JButton button = new JButton(image1);
and here is the html code for applet :
<!--"CONVERTED_APPLET"-->
<!-- CONVERTER VERSION 1.3 -->
<SCRIPT LANGUAGE="JavaScript"><!--
var info = navigator.userAgent; var ns = false;
var ie = (info.indexOf("MSIE") > 0 && info.indexOf("Win") > 0 && info.indexOf("Windows 3.1") < 0);
//--></SCRIPT>
<COMMENT><SCRIPT LANGUAGE="JavaScript1.1"><!--
var ns = (navigator.appName.indexOf("Netscape") >= 0 && ((info.indexOf("Win") > 0 && info.indexOf("Win16") < 0 && java.lang.System.getProperty("os.version").indexOf("3.5") < 0) || (info.indexOf("Sun") > 0) || (_info.indexOf("Linux") > 0)));
//--></SCRIPT></COMMENT>
<SCRIPT LANGUAGE="JavaScript"><!--
if (_ie == true) document.writeln('<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" WIDTH = "500" HEIGHT = "300" codebase="http://java.sun.com/products/plugin/1.3/jinstall-13-win32.cab#Version=1,3,0,0"><NOEMBED><XMP>');
else if (_ns == true) document.writeln('<EMBED type="application/x-java-applet;version=1.3" CODEBASE="http://192.168.1.50/paddy/ns/ns" CODE = "GPTextEditor" MAYSCRIPT="true" WIDTH = "500" HEIGHT = "300" scriptable=false pluginspage="http://java.sun.com/products/plugin/1.3/plugin-install.html"><NOEMBED><XMP>');
//--></SCRIPT>
<APPLET CODE = "GPTextEditor" WIDTH = "500" HEIGHT = "300"></XMP>
<PARAM NAME = CODE VALUE = "GPTextEditor" >
<PARAM NAME = CODEBASE VALUE = "http://192.168.1.50/paddy/ns/ns" >
<PARAM NAME=MAYSCRIPT VALUE=TRUE>
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
<PARAM NAME="scriptable" VALUE="true">
</APPLET>
</NOEMBED></EMBED></OBJECT>
i m using swing applet.....
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