java.lang.OutOfMemoryError

Hi,everyone!

Using JBuilder X, I worte a piece of code, which draw a red point on the screen when user confirmed. Before the point is drawed, the user must click OK on a dialog, then an other dialog created, the user must give some information such as Username,ID and User's mobile phone No, etc. in a dialog. Nothing is wrong in the compling phase, But when I run the project, JBuilder reported me a java.lang.OutOfMemoryError. I was confused. Here is the debug message:

-----------------------
D:\JBuilderX\jdk1.4\bin\javaw -classpath
"C:\Projects\Electric_Control\new\Electric_Control\classes;D:\JBuilderX\jdk1.4\lib\comm.jar;
D:\JBuilderX\jdk1.4\demo\jfc\Java2D\Java2Demo.jar;
D:\JBuilderX\jdk1.4\demo\plugin\jfc\Java2D\Java2Demo.jar;
D:\JBuilderX\jdk1.4\jre\javaws\javaws.jar;
D:\JBuilderX\jdk1.4\jre\lib\charsets.jar;
D:\JBuilderX\jdk1.4\jre\lib\ext\dnsns.jar;
D:\JBuilderX\jdk1.4\jre\lib\ext\ldapsec.jar;
D:\JBuilderX\jdk1.4\jre\lib\ext\localedata.jar;
D:\JBuilderX\jdk1.4\jre\lib\ext\sunjce_provider.jar;
D:\JBuilderX\jdk1.4\jre\lib\im\in dicim.jar;
D:\JBuilderX\jdk1.4\jre\lib\im\thaiim.jar;
D:\JBuilderX\jdk1.4\jre\lib\jce.jar;
D:\JBuilderX\jdk1.4\jre\lib\jsse.jar;
D:\JBuilderX\jdk1.4\jre\lib\plugin.jar;
D:\JBuilderX\jdk1.4\jre\lib\rt.jar;
D:\JBuilderX\jdk1.4\jre\lib\sunrsasign.jar;
D:\JBuilderX\jdk1.4\lib\dt.jar;
D:\JBuilderX\jdk1.4\lib\htmlconverter.jar;
D:\JBuilderX\jdk1.4\lib\tools.jar" gui.ElecCtrl
java.lang.OutOfMemoryError
-----------------------

Below will be my code:

MainGui:

/*
 * MainFrame.java 2004-7-31
 * Copyright (c) 2004 Rsqr Studio. All Rights Reserved.
 * Porgrammed by George Ren
 */
 
package gui;
 
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.net.URL;
import java.io.*;
import java.util.*;
import java.util.List;
import javax.imageio.ImageIO;
import javax.swing.*;
 
 
/**
 * Description:
 * Copyright: Copyright (c) 2004
 * Company: Rsqr Studio
 * @author George Ren
 * @version 1.0.2
 */
public class MainFrame extends JFrame{
 JPanel contentPane;
 JMenuBar jMenuBar1 = new JMenuBar();
 JMenu jMenuUser = new JMenu();
 JMenuItem jMenuUserAdd = new JMenuItem();
 
 public MainFrame_AddUserBox dlg = new MainFrame_AddUserBox(this);
 
 //Construct the frame
 public MainFrame() {
 enableEvents(AWTEvent.WINDOW_EVENT_MASK);
 try {
 jbInit();
 }
 catch(Exception e) {
 e.printStackTrace();
 }
 }
 
 //Component initialization
 private void jbInit() throws Exception {
 
 PointPanel contentPane = new PointPanel();
 this.setState(Frame.NORMAL);
 contentPane.setLayout(null);
 this.setResizable(false);
 this.setSize(new Dimension(1024,714));
 contentPane.setBackground(SystemColor.control);
 contentPane.setEnabled(false);
 contentPane.setFont(new java.awt.Font("MS Sans Serif", 0, 11));
 contentPane.setForeground(Color.black);
 contentPane.setAlignmentY((float) 0.5);
 contentPane.setDebugGraphicsOptions(0);
 contentPane.setDoubleBuffered(true);
 contentPane.setMaximumSize(new Dimension(32767, 32767));
 contentPane.setOpaque(true);
 contentPane.setPreferredSize(new Dimension(1, 1));
 contentPane.setToolTipText("");
 contentPane.setActionMap(null);
 jMenuUser.setText("用户");
 jMenuUserAdd.setText("添加用户");
 jMenuUserAdd.addActionListener(new MainFrame_jMenuUserAdd_actionAdapter(this)); 
 jMenuBar1.add(jMenuUser);
 this.getContentPane().add(contentPane, BorderLayout.CENTER);
 jMenuUser.add(jMenuUserAdd);
 this.setJMenuBar(jMenuBar1);
 }
 
 /**
 * This method is orverridden so we can exit when window is closed.
 * @param e WindowEvent
 */
 protected void processWindowEvent(WindowEvent e) {
 super.processWindowEvent(e);
 if (e.getID() == WindowEvent.WINDOW_CLOSING) {
 jMenuFileExit_actionPerformed(null);
 }
 }
 
 void jMenuUserAdd_actionPerformed(ActionEvent e) {
 AddPopupBox dlg = new AddPopupBox(this);
 Dimension dlgSize = dlg.getPreferredSize();
 Dimension frmSize = getSize();
 Point loc = getLocation();
 dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
 dlg.setModal(true);
 dlg.pack();
 dlg.show();
 }
 
}
 
/**
 * This class provides the main function of drawing points on the screen.
 * Description:
 * Copyright: Copyright (c) 2004
 * Company: Rsqr Studio
 * @author George Ren
 * @version 1.0.2
 */
class PointPanel extends JPanel{
 List pointList;
 Color selectedColor;
 Ellipse2D selectedPoint;
 Image image;
 
 /**
 * The constructor.
 */
 public PointPanel(){
 loadImage();
 pointList = new ArrayList();
 selectedColor = Color.red;
 addMouseListener(new PointLocater(this));
 setBackground(Color.white);
 }
 
 public void drawPoint(){
 //addMouseListener(new PointLocater(this));
 }
 
 /**
 *
 * @param g Graphics
 */
 protected void paintComponent(Graphics g){
 super.paintComponent(g);
 Graphics2D g2 = (Graphics2D)g;
 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
 RenderingHints.VALUE_ANTIALIAS_ON);
 Ellipse2D e;
 Color color;
 
 int w = getWidth();
 int h = getHeight();
 int imageWidth = image.getWidth(this);
 int imageHeight = image.getHeight(this);
 int x = (w - imageWidth)/2;
 int y = (h - imageHeight)/2;
 g.drawImage(image, x, y, this);
 
 for(int j = 0; j < pointList.size(); j++){
 e = (Ellipse2D)pointList.get(j);
 if(e == selectedPoint)
 color = selectedColor;
 else
 color = Color.blue;
 g2.setPaint(color);
 g2.fill(e);
 }
 }
 
 /**
 * This method returns the arraylist of points.
 * @return List
 */
 public List getPointList(){
 return pointList;
 }
 
 /**
 * This method repaint the selected point.
 * @param e Ellipse2D
 */
 public void setSelectedPoint(Ellipse2D e){
 selectedPoint = e;
 repaint();
 }
 
 /**
 * This mthod add a new point on the screen.
 * @param p Point
 */
 public void addPoint(Point p){
 Ellipse2D e = new Ellipse2D.Double(p.x - 3, p.y - 3, 6, 6);
 pointList.add(e);
 selectedPoint = null;
 repaint();
 }
 
 
 private void loadImage(){
 String imgName = "C:/Projects/Electric_Control/new/Electric_Control/src/gui/view.jpg";
 try {
 URL url = new URL("file:/" + imgName);
 image = ImageIO.read(url);
 }
 catch (IOException ex) {
 System.out.println("Load image failed....");
 ex.printStackTrace();
 }
 }
}
 
 
 
class PointLocater extends MouseAdapter{
 PointPanel pointPanel;
 MainFrame frame = new MainFrame();
 
 /**
 * The constructor create a object of pointPanel class.
 * @param pp PointPanel
 * @see PointPanel
 */
 public PointLocater(PointPanel pp){
 pointPanel = pp;
 }
 
 /**
 * This method handles the event of mouse pressed on the screen and descover
 * whether the coordinate of mouse is the points created on the screen.
 * @param e MouseEvent
 */
 public void mousePressed(MouseEvent e){
 Point p = e.getPoint();
 boolean haveSelection = false;
 List list = pointPanel.getPointList();
 Ellipse2D ellipse;
 for(int j = 0; j < list.size(); j++){
 ellipse = (Ellipse2D)list.get(j);
 if(ellipse.contains(p)){
 pointPanel.setSelectedPoint(ellipse);
 haveSelection = true;
 break;
 }
 }
 if(!haveSelection)
 pointPanel.addPoint(p);
 MainFrame frame = new MainFrame();
 Dimension dlgSize = frame.dlg.getPreferredSize();
 Dimension frmSize = frame.dlg.getSize();
 Point loc = frame.dlg.getLocation();
 frame.dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
 frame.dlg.setModal(true);
 frame.dlg.pack();
 frame.dlg.show();
 
 
 }
 
}
 
 
 
class MainFrame_jMenuUserAdd_actionAdapter implements java.awt.event.ActionListener {
 MainFrame adaptee;
 
 MainFrame_jMenuUserAdd_actionAdapter(MainFrame adaptee) {
 this.adaptee = adaptee;
 }
 public void actionPerformed(ActionEvent e) {
 adaptee.jMenuUserAdd_actionPerformed(e);
 }
}

The popup dialog code which the user click OK :

public class AddPopupBox extends JDialog {
  JPanel panel1 = new JPanel();
 
  JButton bOK = new JButton();
 
 
  public AddPopupBox(Frame frame) {
    super(frame);
    try {
      jbInit();
      pack();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }
 
  public AddPopupBox() {
    this(null);
  }
 
  private void jbInit() throws Exception {
    panel1.setPreferredSize(new Dimension(200,100));
    panel1.setLayout(null);
    
    bOK.setBounds(new Rectangle(28, 71, 64, 24));
    bOK.setFont(new java.awt.Font("Dialog", 0, 12));
    bOK.setText("确定");
    bOK.addActionListener(new AddPopupBox_bOK_actionAdapter(this));
  
   
    panel1.add(bOK, null);
   
    this.getContentPane().add(panel1, BorderLayout.CENTER);
  }
 
 
 
  void bOK_actionPerformed(ActionEvent e) {
    this.setVisible(false);
    PointPanel pointPanel = new PointPanel();
    pointPanel.drawPoint();
 
  }
 
}
 
 
 
class AddPopupBox_bOK_actionAdapter implements java.awt.event.ActionListener {
  AddPopupBox adaptee;
 
  AddPopupBox_bOK_actionAdapter(AddPopupBox adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.bOK_actionPerformed(e);
  }
}

The other dialog that the user give some information:

/*
 * MainFrame_AddUserBox.java 2004-8-2
 * Copyright (c) 2004 Rsqr Studio. All Rights Reserved.
 * Porgrammed by George Ren
 */
 
package gui;
 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
/**
 * Description:
 * Copyright: Copyright (c) 2004
 * Company: Rsqr Studio
 * @author George Ren
 * @version 1.0.2
 */
 
public class MainFrame_AddUserBox extends JDialog implements ActionListener{
 JPanel panel1 = new JPanel();
 JLabel jLabel1 = new JLabel();
 JLabel jLabel2 = new JLabel();
 JLabel jLabel3 = new JLabel();
 JTextField tfName = new JTextField();
 JTextField tfMobile = new JTextField();
 JLabel jLabel4 = new JLabel();
 JLabel jLabel5 = new JLabel();
 JLabel jLabel6 = new JLabel();
 JTextField tfX = new JTextField();
 JTextField tfY = new JTextField();
 JLabel jLabel7 = new JLabel();
 JTextField tfID = new JTextField();
 JButton bOK = new JButton();
 JButton bCancel = new JButton();
 
 public MainFrame_AddUserBox(Frame frame) {
 super(frame);
 try {
 jbInit();
 pack();
 }
 catch(Exception ex) {
 ex.printStackTrace();
 }
 }
 
 public MainFrame_AddUserBox() {
 this(null);
 }
 
 public void actionPerformed(ActionEvent e){
 
 }
 
 private void jbInit() throws Exception {
 panel1.setLayout(null);
 
 jLabel1.setForeground(Color.black);
 jLabel1.setText("user name:");
 jLabel1.setBounds(new Rectangle(38, 70, 61, 26));
 jLabel2.setBounds(new Rectangle(13, 124, 86, 26));
 jLabel2.setText("Mobile No:");
 jLabel2.setForeground(Color.black);
 jLabel3.setFont(new java.awt.Font("Dialog", 0, 12));
 jLabel3.setToolTipText("");
 jLabel3.setText("Please give some information:");
 jLabel3.setBounds(new Rectangle(29, 29, 246, 22));
 tfName.setText("");
 tfName.setBounds(new Rectangle(92, 72, 84, 24));
 tfMobile.setVerifyInputWhenFocusTarget(true);
 tfMobile.setText("");
 tfMobile.setBounds(new Rectangle(92, 126, 84, 24));
 jLabel4.setFont(new java.awt.Font("Dialog", 0, 12));
 jLabel4.setText("Coordinate on the screen：");
 jLabel4.setBounds(new Rectangle(203, 99, 67, 21));
 jLabel5.setText("X =");
 jLabel5.setBounds(new Rectangle(284, 73, 21, 20));
 jLabel6.setBounds(new Rectangle(283, 126, 21, 20));
 jLabel6.setText("Y =");
 tfX.setEditable(false);
 tfX.setText("");
 tfX.setBounds(new Rectangle(310, 73, 45, 22));
 tfY.setBounds(new Rectangle(310, 125, 45, 22));
 tfY.setEditable(false);
 tfY.setText("");
 jLabel7.setBounds(new Rectangle(36, 181, 61, 26));
 jLabel7.setText("ID：");
 jLabel7.setForeground(Color.black);
 tfID.setBounds(new Rectangle(91, 182, 84, 24));
 tfID.setText("");
 bOK.setBounds(new Rectangle(210, 181, 56, 25));
 bOK.setFont(new java.awt.Font("Dialog", 0, 12));
 bOK.setText("OK");
 bOK.addActionListener(new MainFrame_AddUserBox_bOK_actionAdapter(this));
 bCancel.setText("CANCEL");
 bCancel.addActionListener(new MainFrame_AddUserBox_bCancel_actionAdapter(this));
 bCancel.setBounds(new Rectangle(300, 181, 56, 25));
 bCancel.setFont(new java.awt.Font("Dialog", 0, 12));
 panel1.setMinimumSize(new Dimension(390, 200));
 this.setResizable(false);
 this.setTitle("Add new user");
 this.setSize(new Dimension(390,245));
 getContentPane().add(panel1);
 panel1.setPreferredSize(new Dimension(390,245));
 panel1.add(jLabel3, null);
 panel1.add(jLabel1, null);
 panel1.add(tfName, null);
 panel1.add(tfMobile, null);
 panel1.add(jLabel4, null);
 panel1.add(jLabel5, null);
 panel1.add(jLabel6, null);
 panel1.add(tfX, null);
 panel1.add(tfY, null);
 panel1.add(jLabel2, null);
 panel1.add(tfID, null);
 panel1.add(jLabel7, null);
 panel1.add(bCancel, null);
 panel1.add(bOK, null);
 }
 
 void bOK_actionPerformed(ActionEvent e) {
//do something!
 }
 
 void bCancel_actionPerformed(ActionEvent e) {
 dispose(); //close the dialog
 }
 
}
 
class MainFrame_AddUserBox_bOK_actionAdapter implements java.awt.event.ActionListener {
 MainFrame_AddUserBox adaptee;
 
 MainFrame_AddUserBox_bOK_actionAdapter(MainFrame_AddUserBox adaptee) {
 this.adaptee = adaptee;
 }
 public void actionPerformed(ActionEvent e) {
 adaptee.bOK_actionPerformed(e);
 }
}
 
class MainFrame_AddUserBox_bCancel_actionAdapter implements java.awt.event.ActionListener {
 MainFrame_AddUserBox adaptee;
 
 MainFrame_AddUserBox_bCancel_actionAdapter(MainFrame_AddUserBox adaptee) {
 this.adaptee = adaptee;
 }
 public void actionPerformed(ActionEvent e) {
 adaptee.bCancel_actionPerformed(e);
 }
}

The code is quite long

Thank you for reading!

[ Jess edited the classpath so that it doesn't stretch the screen all the way across, also removed the "quote" block around the classpath because UBB has issues when you edit a post with "quote" and "code" blocks in the same post ]
[ August 02, 2004: Message edited by: Jessica Sant ]

I haven't read through your post, but a quick fix may be to simply increase the size of the heap and avoid the OutOfMemoryError.

when you start the program, add something like this:
java -Xmx400m com.package.MyClass

That command allocates 400MB to the Java Heap -- and hopefully allows your program to run.

If something like that doesn't work, you'll need to debug your program and find out where the memory leak is. JProbe is a great program that you can use to easily identify those pesky memory leaks.