为什么Java JTextArea 没有接收到整个粘贴的文本？

•浏览 1

Why Java JTextArea doesn't receive the entire pasted text?

使用 Netbeans 6.8 (Mac 版) 拖放工具制作 GUI，我设计了一个 JTextArea，用户应该粘贴他的数据，程序将修改并显示给他。

它工作正常；但是，当我尝试在 JTextArea 中粘贴大约 65000 行测试数据时，GUI 只显示其中几行(比如 50 行或更少)......由于某种原因，它拒绝粘贴我复制的整个测试数据来自记事本。

我以为 JTextArea 已满之类的，但是当我尝试手动输入更多文本时(粘贴测试数据后)，它正在输入并显示在文本框中！

知道发生了什么吗？

更新 001

我收到以下错误

Java.lang.OutOfMemoryError: Java heap spaces
package bossconverter;



import org.jdesktop.application.Action;

import org.jdesktop.application.ResourceMap;

import org.jdesktop.application.SingleFrameApplication;

import org.jdesktop.application.FrameView;

import org.jdesktop.application.TaskMonitor;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.Timer;

import javax.swing.Icon;

import javax.swing.JDialog;

import javax.swing.JFrame;



/**

* The application's main frame.

*/

public class BOSSConverterView extends FrameView {



public BOSSConverterView(SingleFrameApplication app) {

  super(app);



  initComponents();



  // status bar initialization - message timeout, idle icon and busy animation, etc

  ResourceMap resourceMap = getResourceMap();

  int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");

  messageTimer = new Timer(messageTimeout, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      statusMessageLabel.setText("");

    }

  });

  messageTimer.setRepeats(false);

  int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");

  for (int i = 0; i < busyIcons.length; i++) {

    busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i +"]");

  }

  busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      busyIconIndex = (busyIconIndex + 1) % busyIcons.length;

      statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);

    }

  });

  idleIcon = resourceMap.getIcon("StatusBar.idleIcon");

  statusAnimationLabel.setIcon(idleIcon);

  progressBar.setVisible(false);



  // connecting action tasks to status bar via TaskMonitor

  TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());

  taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {

    public void propertyChange(java.beans.PropertyChangeEvent evt) {

      String propertyName = evt.getPropertyName();

      if ("started".equals(propertyName)) {

        if (!busyIconTimer.isRunning()) {

          statusAnimationLabel.setIcon(busyIcons[0]);

          busyIconIndex = 0;

          busyIconTimer.start();

        }

        progressBar.setVisible(true);

        progressBar.setIndeterminate(true);

      } else if ("done".equals(propertyName)) {

        busyIconTimer.stop();

        statusAnimationLabel.setIcon(idleIcon);

        progressBar.setVisible(false);

        progressBar.setValue(0);

      } else if ("message".equals(propertyName)) {

        String text = (String)(evt.getNewValue());

        statusMessageLabel.setText((text == null) ?"" : text);

        messageTimer.restart();

      } else if ("progress".equals(propertyName)) {

        int value = (Integer)(evt.getNewValue());

        progressBar.setVisible(true);

        progressBar.setIndeterminate(false);

        progressBar.setValue(value);

      }

    }

  });

}



@Action

public void showAboutBox() {

  if (aboutBox == null) {

    JFrame mainFrame = BOSSConverterApp.getApplication().getMainFrame();

    aboutBox = new BOSSConverterAboutBox(mainFrame);

    aboutBox.setLocationRelativeTo(mainFrame);

  }

  BOSSConverterApp.getApplication().show(aboutBox);

}



/** This method is called from within the constructor to

* initialize the form.

* WARNING: Do NOT modify this code. The content of this method is

* always regenerated by the Form Editor.

*/

@SuppressWarnings("unchecked")

// <editor-fold defaultstate="collapsed" desc="Generated Code">

private void initComponents() {



  mainPanel = new javax.swing.JPanel();

  jScrollPane1 = new javax.swing.JScrollPane();

  jTextArea1 = new javax.swing.JTextArea();

  jScrollPane2 = new javax.swing.JScrollPane();

  jTextArea2 = new javax.swing.JTextArea();

  jButton1 = new javax.swing.JButton();

  menuBar = new javax.swing.JMenuBar();

  javax.swing.JMenu fileMenu = new javax.swing.JMenu();

  javax.swing.JMenuItem exitMenuItem = new javax.swing.JMenuItem();

  javax.swing.JMenu helpMenu = new javax.swing.JMenu();

  javax.swing.JMenuItem aboutMenuItem = new javax.swing.JMenuItem();

  statusPanel = new javax.swing.JPanel();

  javax.swing.JSeparator statusPanelSeparator = new javax.swing.JSeparator();

  statusMessageLabel = new javax.swing.JLabel();

  statusAnimationLabel = new javax.swing.JLabel();

  progressBar = new javax.swing.JProgressBar();



  mainPanel.setName("mainPanel"); // NOI18N



  jScrollPane1.setName("jScrollPane1"); // NOI18N



  jTextArea1.setColumns(20);

  jTextArea1.setRows(5);

  jTextArea1.setName("jTextArea1"); // NOI18N

  jScrollPane1.setViewportView(jTextArea1);



  jScrollPane2.setName("jScrollPane2"); // NOI18N



  jTextArea2.setColumns(20);

  jTextArea2.setRows(5);

  jTextArea2.setName("jTextArea2"); // NOI18N

  jScrollPane2.setViewportView(jTextArea2);



  org.jdesktop.application.ResourceMap resourceMap =

        org.jdesktop.application.Application.getInstance

         (bossconverter.BOSSConverterApp.class).getContext()

         .getResourceMap(BOSSConverterView.class);

  jButton1.setText(resourceMap.getString("jButton1.text")); // NOI18N

  jButton1.setName("jButton1"); // NOI18N

  jButton1.addMouseListener(new java.awt.event.MouseAdapter() {

    public void mouseClicked(java.awt.event.MouseEvent evt) {

      tester(evt);

    }

  });



  org.jdesktop.layout.GroupLayout mainPanelLayout =

        new org.jdesktop.layout.GroupLayout(mainPanel);

  mainPanel.setLayout(mainPanelLayout);

  mainPanelLayout.setHorizontalGroup(

    mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)

    .add(mainPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout

                          .GroupLayout.LEADING)

        .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          383, Short.MAX_VALUE)

        .add(jScrollPane2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          383, Short.MAX_VALUE)

        .add(org.jdesktop.layout.GroupLayout.TRAILING, jButton1))

      .addContainerGap())

  );

  mainPanelLayout.setVerticalGroup(

    mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)

    .add(mainPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        98, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .add(18, 18, 18)

      .add(jScrollPane2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        97, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)

      .add(jButton1)

      .addContainerGap(22, Short.MAX_VALUE))

  );



  menuBar.setName("menuBar"); // NOI18N



  fileMenu.setText(resourceMap.getString("fileMenu.text")); // NOI18N

  fileMenu.setName("fileMenu"); // NOI18N



  javax.swing.ActionMap actionMap = org.jdesktop.application.Application

                   .getInstance(bossconverter.BOSSConverterApp

                   .class).getContext().getActionMap

                   (BOSSConverterView.class, this);

  exitMenuItem.setAction(actionMap.get("quit")); // NOI18N

  exitMenuItem.setName("exitMenuItem"); // NOI18N

  fileMenu.add(exitMenuItem);



  menuBar.add(fileMenu);



  helpMenu.setText(resourceMap.getString("helpMenu.text")); // NOI18N

  helpMenu.setName("helpMenu"); // NOI18N



  aboutMenuItem.setAction(actionMap.get("showAboutBox")); // NOI18N

  aboutMenuItem.setName("aboutMenuItem"); // NOI18N

  helpMenu.add(aboutMenuItem);



  menuBar.add(helpMenu);



  statusPanel.setName("statusPanel"); // NOI18N



  statusPanelSeparator.setName("statusPanelSeparator"); // NOI18N



  statusMessageLabel.setName("statusMessageLabel"); // NOI18N



  statusAnimationLabel.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);

  statusAnimationLabel.setName("statusAnimationLabel"); // NOI18N



  progressBar.setName("progressBar"); // NOI18N



  org.jdesktop.layout.GroupLayout statusPanelLayout = new org.jdesktop.layout

                            .GroupLayout(statusPanel);

  statusPanel.setLayout(statusPanelLayout);

  statusPanelLayout.setHorizontalGroup(

    statusPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout

                       .LEADING)

    .add(statusPanelSeparator, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

      423, Short.MAX_VALUE)

    .add(statusPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(statusMessageLabel)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 227,

              Short.MAX_VALUE)

      .add(progressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

        org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)

      .add(statusAnimationLabel)

      .addContainerGap())

  );

  statusPanelLayout.setVerticalGroup(

    statusPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout

                       .LEADING)

    .add(statusPanelLayout.createSequentialGroup()

      .add(statusPanelSeparator, org.jdesktop.layout.GroupLayout

        .PREFERRED_SIZE, 2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED,

              org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

              Short.MAX_VALUE)

      .add(statusPanelLayout.createParallelGroup(org.jdesktop.layout

                           .GroupLayout.BASELINE)

        .add(statusMessageLabel)

        .add(statusAnimationLabel)

        .add(progressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

          org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))

      .add(3, 3, 3))

  );



  setComponent(mainPanel);

  setMenuBar(menuBar);

  setStatusBar(statusPanel);

}// </editor-fold>



private void tester(java.awt.event.MouseEvent evt) {



  Converter converter = new Converter();

  jTextArea2.setText(converter.fixParsedParagraph (jTextArea1.getText()) );

}



// Variables declaration - do not modify

private javax.swing.JButton jButton1;

private javax.swing.JScrollPane jScrollPane1;

private javax.swing.JScrollPane jScrollPane2;

private javax.swing.JTextArea jTextArea1;

private javax.swing.JTextArea jTextArea2;

private javax.swing.JPanel mainPanel;

private javax.swing.JMenuBar menuBar;

private javax.swing.JProgressBar progressBar;

private javax.swing.JLabel statusAnimationLabel;

private javax.swing.JLabel statusMessageLabel;

private javax.swing.JPanel statusPanel;

// End of variables declaration



private final Timer messageTimer;

private final Timer busyIconTimer;

private final Icon idleIcon;

private final Icon[] busyIcons = new Icon[15];

private int busyIconIndex = 0;



private JDialog aboutBox;

}
java -Xms64m -Xmx256m my_prog
import javax.swing.*;

import java.awt.*;



public class JTextAreaPasteTest {



  private String testStr ="Paste text here.";



  public static void main(String argv[]) {

    EventQueue.invokeLater(new Runnable() {

      public void run() {

        new JTextAreaPasteTest();

      }

    });

  }



  public JTextAreaPasteTest () {

    JFrame frame = new JFrame();

    frame.setDefaultCloseOperation(JDialog.EXIT_ON_CLOSE);

    PasteArea wrapArea = new PasteArea("Paste text here.");

    frame.setLayout(new FlowLayout());

    frame.add(new JScrollPane(wrapArea));

    frame.pack();

    frame.setVisible(true);

  }



  private static class PasteArea extends JTextArea {



    public PasteArea(String str) {

      super(str, 20, 40);

      this.setLineWrap(true);

      this.setWrapStyleWord(true);

      this.setCaretPosition(str.length());

    }

  }

}

更新 002

Java.lang.OutOfMemoryError: Java heap spaces
package bossconverter;



import org.jdesktop.application.Action;

import org.jdesktop.application.ResourceMap;

import org.jdesktop.application.SingleFrameApplication;

import org.jdesktop.application.FrameView;

import org.jdesktop.application.TaskMonitor;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.Timer;

import javax.swing.Icon;

import javax.swing.JDialog;

import javax.swing.JFrame;



/**

* The application's main frame.

*/

public class BOSSConverterView extends FrameView {



public BOSSConverterView(SingleFrameApplication app) {

  super(app);



  initComponents();



  // status bar initialization - message timeout, idle icon and busy animation, etc

  ResourceMap resourceMap = getResourceMap();

  int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");

  messageTimer = new Timer(messageTimeout, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      statusMessageLabel.setText("");

    }

  });

  messageTimer.setRepeats(false);

  int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");

  for (int i = 0; i < busyIcons.length; i++) {

    busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i +"]");

  }

  busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      busyIconIndex = (busyIconIndex + 1) % busyIcons.length;

      statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);

    }

  });

  idleIcon = resourceMap.getIcon("StatusBar.idleIcon");

  statusAnimationLabel.setIcon(idleIcon);

  progressBar.setVisible(false);



  // connecting action tasks to status bar via TaskMonitor

  TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());

  taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {

    public void propertyChange(java.beans.PropertyChangeEvent evt) {

      String propertyName = evt.getPropertyName();

      if ("started".equals(propertyName)) {

        if (!busyIconTimer.isRunning()) {

          statusAnimationLabel.setIcon(busyIcons[0]);

          busyIconIndex = 0;

          busyIconTimer.start();

        }

        progressBar.setVisible(true);

        progressBar.setIndeterminate(true);

      } else if ("done".equals(propertyName)) {

        busyIconTimer.stop();

        statusAnimationLabel.setIcon(idleIcon);

        progressBar.setVisible(false);

        progressBar.setValue(0);

      } else if ("message".equals(propertyName)) {

        String text = (String)(evt.getNewValue());

        statusMessageLabel.setText((text == null) ?"" : text);

        messageTimer.restart();

      } else if ("progress".equals(propertyName)) {

        int value = (Integer)(evt.getNewValue());

        progressBar.setVisible(true);

        progressBar.setIndeterminate(false);

        progressBar.setValue(value);

      }

    }

  });

}



@Action

public void showAboutBox() {

  if (aboutBox == null) {

    JFrame mainFrame = BOSSConverterApp.getApplication().getMainFrame();

    aboutBox = new BOSSConverterAboutBox(mainFrame);

    aboutBox.setLocationRelativeTo(mainFrame);

  }

  BOSSConverterApp.getApplication().show(aboutBox);

}



/** This method is called from within the constructor to

* initialize the form.

* WARNING: Do NOT modify this code. The content of this method is

* always regenerated by the Form Editor.

*/

@SuppressWarnings("unchecked")

// <editor-fold defaultstate="collapsed" desc="Generated Code">

private void initComponents() {



  mainPanel = new javax.swing.JPanel();

  jScrollPane1 = new javax.swing.JScrollPane();

  jTextArea1 = new javax.swing.JTextArea();

  jScrollPane2 = new javax.swing.JScrollPane();

  jTextArea2 = new javax.swing.JTextArea();

  jButton1 = new javax.swing.JButton();

  menuBar = new javax.swing.JMenuBar();

  javax.swing.JMenu fileMenu = new javax.swing.JMenu();

  javax.swing.JMenuItem exitMenuItem = new javax.swing.JMenuItem();

  javax.swing.JMenu helpMenu = new javax.swing.JMenu();

  javax.swing.JMenuItem aboutMenuItem = new javax.swing.JMenuItem();

  statusPanel = new javax.swing.JPanel();

  javax.swing.JSeparator statusPanelSeparator = new javax.swing.JSeparator();

  statusMessageLabel = new javax.swing.JLabel();

  statusAnimationLabel = new javax.swing.JLabel();

  progressBar = new javax.swing.JProgressBar();



  mainPanel.setName("mainPanel"); // NOI18N



  jScrollPane1.setName("jScrollPane1"); // NOI18N



  jTextArea1.setColumns(20);

  jTextArea1.setRows(5);

  jTextArea1.setName("jTextArea1"); // NOI18N

  jScrollPane1.setViewportView(jTextArea1);



  jScrollPane2.setName("jScrollPane2"); // NOI18N



  jTextArea2.setColumns(20);

  jTextArea2.setRows(5);

  jTextArea2.setName("jTextArea2"); // NOI18N

  jScrollPane2.setViewportView(jTextArea2);



  org.jdesktop.application.ResourceMap resourceMap =

        org.jdesktop.application.Application.getInstance

         (bossconverter.BOSSConverterApp.class).getContext()

         .getResourceMap(BOSSConverterView.class);

  jButton1.setText(resourceMap.getString("jButton1.text")); // NOI18N

  jButton1.setName("jButton1"); // NOI18N

  jButton1.addMouseListener(new java.awt.event.MouseAdapter() {

    public void mouseClicked(java.awt.event.MouseEvent evt) {

      tester(evt);

    }

  });



  org.jdesktop.layout.GroupLayout mainPanelLayout =

        new org.jdesktop.layout.GroupLayout(mainPanel);

  mainPanel.setLayout(mainPanelLayout);

  mainPanelLayout.setHorizontalGroup(

    mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)

    .add(mainPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout

                          .GroupLayout.LEADING)

        .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          383, Short.MAX_VALUE)

        .add(jScrollPane2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          383, Short.MAX_VALUE)

        .add(org.jdesktop.layout.GroupLayout.TRAILING, jButton1))

      .addContainerGap())

  );

  mainPanelLayout.setVerticalGroup(

    mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)

    .add(mainPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        98, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .add(18, 18, 18)

      .add(jScrollPane2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        97, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)

      .add(jButton1)

      .addContainerGap(22, Short.MAX_VALUE))

  );



  menuBar.setName("menuBar"); // NOI18N



  fileMenu.setText(resourceMap.getString("fileMenu.text")); // NOI18N

  fileMenu.setName("fileMenu"); // NOI18N



  javax.swing.ActionMap actionMap = org.jdesktop.application.Application

                   .getInstance(bossconverter.BOSSConverterApp

                   .class).getContext().getActionMap

                   (BOSSConverterView.class, this);

  exitMenuItem.setAction(actionMap.get("quit")); // NOI18N

  exitMenuItem.setName("exitMenuItem"); // NOI18N

  fileMenu.add(exitMenuItem);



  menuBar.add(fileMenu);



  helpMenu.setText(resourceMap.getString("helpMenu.text")); // NOI18N

  helpMenu.setName("helpMenu"); // NOI18N



  aboutMenuItem.setAction(actionMap.get("showAboutBox")); // NOI18N

  aboutMenuItem.setName("aboutMenuItem"); // NOI18N

  helpMenu.add(aboutMenuItem);



  menuBar.add(helpMenu);



  statusPanel.setName("statusPanel"); // NOI18N



  statusPanelSeparator.setName("statusPanelSeparator"); // NOI18N



  statusMessageLabel.setName("statusMessageLabel"); // NOI18N



  statusAnimationLabel.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);

  statusAnimationLabel.setName("statusAnimationLabel"); // NOI18N



  progressBar.setName("progressBar"); // NOI18N



  org.jdesktop.layout.GroupLayout statusPanelLayout = new org.jdesktop.layout

                            .GroupLayout(statusPanel);

  statusPanel.setLayout(statusPanelLayout);

  statusPanelLayout.setHorizontalGroup(

    statusPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout

                       .LEADING)

    .add(statusPanelSeparator, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

      423, Short.MAX_VALUE)

    .add(statusPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(statusMessageLabel)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 227,

              Short.MAX_VALUE)

      .add(progressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

        org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)

      .add(statusAnimationLabel)

      .addContainerGap())

  );

  statusPanelLayout.setVerticalGroup(

    statusPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout

                       .LEADING)

    .add(statusPanelLayout.createSequentialGroup()

      .add(statusPanelSeparator, org.jdesktop.layout.GroupLayout

        .PREFERRED_SIZE, 2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED,

              org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

              Short.MAX_VALUE)

      .add(statusPanelLayout.createParallelGroup(org.jdesktop.layout

                           .GroupLayout.BASELINE)

        .add(statusMessageLabel)

        .add(statusAnimationLabel)

        .add(progressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

          org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))

      .add(3, 3, 3))

  );



  setComponent(mainPanel);

  setMenuBar(menuBar);

  setStatusBar(statusPanel);

}// </editor-fold>



private void tester(java.awt.event.MouseEvent evt) {



  Converter converter = new Converter();

  jTextArea2.setText(converter.fixParsedParagraph (jTextArea1.getText()) );

}



// Variables declaration - do not modify

private javax.swing.JButton jButton1;

private javax.swing.JScrollPane jScrollPane1;

private javax.swing.JScrollPane jScrollPane2;

private javax.swing.JTextArea jTextArea1;

private javax.swing.JTextArea jTextArea2;

private javax.swing.JPanel mainPanel;

private javax.swing.JMenuBar menuBar;

private javax.swing.JProgressBar progressBar;

private javax.swing.JLabel statusAnimationLabel;

private javax.swing.JLabel statusMessageLabel;

private javax.swing.JPanel statusPanel;

// End of variables declaration



private final Timer messageTimer;

private final Timer busyIconTimer;

private final Icon idleIcon;

private final Icon[] busyIcons = new Icon[15];

private int busyIconIndex = 0;



private JDialog aboutBox;

}
java -Xms64m -Xmx256m my_prog
import javax.swing.*;

import java.awt.*;



public class JTextAreaPasteTest {



  private String testStr ="Paste text here.";



  public static void main(String argv[]) {

    EventQueue.invokeLater(new Runnable() {

      public void run() {

        new JTextAreaPasteTest();

      }

    });

  }



  public JTextAreaPasteTest () {

    JFrame frame = new JFrame();

    frame.setDefaultCloseOperation(JDialog.EXIT_ON_CLOSE);

    PasteArea wrapArea = new PasteArea("Paste text here.");

    frame.setLayout(new FlowLayout());

    frame.add(new JScrollPane(wrapArea));

    frame.pack();

    frame.setVisible(true);

  }



  private static class PasteArea extends JTextArea {



    public PasteArea(String str) {

      super(str, 20, 40);

      this.setLineWrap(true);

      this.setWrapStyleWord(true);

      this.setCaretPosition(str.length());

    }

  }

}

这是 netbeans 为我的 GUI 自动生成的代码。

那么里面有什么需要修复的吗？

Java 虚拟机采用两个命令行参数来设置初始和最大堆大小：

-Xms 和 -Xmx。例如，如果你想给你的 Java 程序一个 64Mb 的初始和 256Mb 的最大堆大小，你可以按如下方式启动它：

Java.lang.OutOfMemoryError: Java heap spaces
package bossconverter;



import org.jdesktop.application.Action;

import org.jdesktop.application.ResourceMap;

import org.jdesktop.application.SingleFrameApplication;

import org.jdesktop.application.FrameView;

import org.jdesktop.application.TaskMonitor;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.Timer;

import javax.swing.Icon;

import javax.swing.JDialog;

import javax.swing.JFrame;



/**

* The application's main frame.

*/

public class BOSSConverterView extends FrameView {



public BOSSConverterView(SingleFrameApplication app) {

  super(app);



  initComponents();



  // status bar initialization - message timeout, idle icon and busy animation, etc

  ResourceMap resourceMap = getResourceMap();

  int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");

  messageTimer = new Timer(messageTimeout, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      statusMessageLabel.setText("");

    }

  });

  messageTimer.setRepeats(false);

  int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");

  for (int i = 0; i < busyIcons.length; i++) {

    busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i +"]");

  }

  busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      busyIconIndex = (busyIconIndex + 1) % busyIcons.length;

      statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);

    }

  });

  idleIcon = resourceMap.getIcon("StatusBar.idleIcon");

  statusAnimationLabel.setIcon(idleIcon);

  progressBar.setVisible(false);



  // connecting action tasks to status bar via TaskMonitor

  TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());

  taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {

    public void propertyChange(java.beans.PropertyChangeEvent evt) {

      String propertyName = evt.getPropertyName();

      if ("started".equals(propertyName)) {

        if (!busyIconTimer.isRunning()) {

          statusAnimationLabel.setIcon(busyIcons[0]);

          busyIconIndex = 0;

          busyIconTimer.start();

        }

        progressBar.setVisible(true);

        progressBar.setIndeterminate(true);

      } else if ("done".equals(propertyName)) {

        busyIconTimer.stop();

        statusAnimationLabel.setIcon(idleIcon);

        progressBar.setVisible(false);

        progressBar.setValue(0);

      } else if ("message".equals(propertyName)) {

        String text = (String)(evt.getNewValue());

        statusMessageLabel.setText((text == null) ?"" : text);

        messageTimer.restart();

      } else if ("progress".equals(propertyName)) {

        int value = (Integer)(evt.getNewValue());

        progressBar.setVisible(true);

        progressBar.setIndeterminate(false);

        progressBar.setValue(value);

      }

    }

  });

}



@Action

public void showAboutBox() {

  if (aboutBox == null) {

    JFrame mainFrame = BOSSConverterApp.getApplication().getMainFrame();

    aboutBox = new BOSSConverterAboutBox(mainFrame);

    aboutBox.setLocationRelativeTo(mainFrame);

  }

  BOSSConverterApp.getApplication().show(aboutBox);

}



/** This method is called from within the constructor to

* initialize the form.

* WARNING: Do NOT modify this code. The content of this method is

* always regenerated by the Form Editor.

*/

@SuppressWarnings("unchecked")

// <editor-fold defaultstate="collapsed" desc="Generated Code">

private void initComponents() {



  mainPanel = new javax.swing.JPanel();

  jScrollPane1 = new javax.swing.JScrollPane();

  jTextArea1 = new javax.swing.JTextArea();

  jScrollPane2 = new javax.swing.JScrollPane();

  jTextArea2 = new javax.swing.JTextArea();

  jButton1 = new javax.swing.JButton();

  menuBar = new javax.swing.JMenuBar();

  javax.swing.JMenu fileMenu = new javax.swing.JMenu();

  javax.swing.JMenuItem exitMenuItem = new javax.swing.JMenuItem();

  javax.swing.JMenu helpMenu = new javax.swing.JMenu();

  javax.swing.JMenuItem aboutMenuItem = new javax.swing.JMenuItem();

  statusPanel = new javax.swing.JPanel();

  javax.swing.JSeparator statusPanelSeparator = new javax.swing.JSeparator();

  statusMessageLabel = new javax.swing.JLabel();

  statusAnimationLabel = new javax.swing.JLabel();

  progressBar = new javax.swing.JProgressBar();



  mainPanel.setName("mainPanel"); // NOI18N



  jScrollPane1.setName("jScrollPane1"); // NOI18N



  jTextArea1.setColumns(20);

  jTextArea1.setRows(5);

  jTextArea1.setName("jTextArea1"); // NOI18N

  jScrollPane1.setViewportView(jTextArea1);



  jScrollPane2.setName("jScrollPane2"); // NOI18N



  jTextArea2.setColumns(20);

  jTextArea2.setRows(5);

  jTextArea2.setName("jTextArea2"); // NOI18N

  jScrollPane2.setViewportView(jTextArea2);



  org.jdesktop.application.ResourceMap resourceMap =

        org.jdesktop.application.Application.getInstance

         (bossconverter.BOSSConverterApp.class).getContext()

         .getResourceMap(BOSSConverterView.class);

  jButton1.setText(resourceMap.getString("jButton1.text")); // NOI18N

  jButton1.setName("jButton1"); // NOI18N

  jButton1.addMouseListener(new java.awt.event.MouseAdapter() {

    public void mouseClicked(java.awt.event.MouseEvent evt) {

      tester(evt);

    }

  });



  org.jdesktop.layout.GroupLayout mainPanelLayout =

        new org.jdesktop.layout.GroupLayout(mainPanel);

  mainPanel.setLayout(mainPanelLayout);

  mainPanelLayout.setHorizontalGroup(

    mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)

    .add(mainPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(mainPanelLayout.createParallelGroup(org.jdesktop.layout

                          .GroupLayout.LEADING)

        .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          383, Short.MAX_VALUE)

        .add(jScrollPane2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          383, Short.MAX_VALUE)

        .add(org.jdesktop.layout.GroupLayout.TRAILING, jButton1))

      .addContainerGap())

  );

  mainPanelLayout.setVerticalGroup(

    mainPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)

    .add(mainPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        98, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .add(18, 18, 18)

      .add(jScrollPane2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        97, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)

      .add(jButton1)

      .addContainerGap(22, Short.MAX_VALUE))

  );



  menuBar.setName("menuBar"); // NOI18N



  fileMenu.setText(resourceMap.getString("fileMenu.text")); // NOI18N

  fileMenu.setName("fileMenu"); // NOI18N



  javax.swing.ActionMap actionMap = org.jdesktop.application.Application

                   .getInstance(bossconverter.BOSSConverterApp

                   .class).getContext().getActionMap

                   (BOSSConverterView.class, this);

  exitMenuItem.setAction(actionMap.get("quit")); // NOI18N

  exitMenuItem.setName("exitMenuItem"); // NOI18N

  fileMenu.add(exitMenuItem);



  menuBar.add(fileMenu);



  helpMenu.setText(resourceMap.getString("helpMenu.text")); // NOI18N

  helpMenu.setName("helpMenu"); // NOI18N



  aboutMenuItem.setAction(actionMap.get("showAboutBox")); // NOI18N

  aboutMenuItem.setName("aboutMenuItem"); // NOI18N

  helpMenu.add(aboutMenuItem);



  menuBar.add(helpMenu);



  statusPanel.setName("statusPanel"); // NOI18N



  statusPanelSeparator.setName("statusPanelSeparator"); // NOI18N



  statusMessageLabel.setName("statusMessageLabel"); // NOI18N



  statusAnimationLabel.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);

  statusAnimationLabel.setName("statusAnimationLabel"); // NOI18N



  progressBar.setName("progressBar"); // NOI18N



  org.jdesktop.layout.GroupLayout statusPanelLayout = new org.jdesktop.layout

                            .GroupLayout(statusPanel);

  statusPanel.setLayout(statusPanelLayout);

  statusPanelLayout.setHorizontalGroup(

    statusPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout

                       .LEADING)

    .add(statusPanelSeparator, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

      423, Short.MAX_VALUE)

    .add(statusPanelLayout.createSequentialGroup()

      .addContainerGap()

      .add(statusMessageLabel)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 227,

              Short.MAX_VALUE)

      .add(progressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

        org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

        org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)

      .add(statusAnimationLabel)

      .addContainerGap())

  );

  statusPanelLayout.setVerticalGroup(

    statusPanelLayout.createParallelGroup(org.jdesktop.layout.GroupLayout

                       .LEADING)

    .add(statusPanelLayout.createSequentialGroup()

      .add(statusPanelSeparator, org.jdesktop.layout.GroupLayout

        .PREFERRED_SIZE, 2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)

      .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED,

              org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

              Short.MAX_VALUE)

      .add(statusPanelLayout.createParallelGroup(org.jdesktop.layout

                           .GroupLayout.BASELINE)

        .add(statusMessageLabel)

        .add(statusAnimationLabel)

        .add(progressBar, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,

          org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,

          org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))

      .add(3, 3, 3))

  );



  setComponent(mainPanel);

  setMenuBar(menuBar);

  setStatusBar(statusPanel);

}// </editor-fold>



private void tester(java.awt.event.MouseEvent evt) {



  Converter converter = new Converter();

  jTextArea2.setText(converter.fixParsedParagraph (jTextArea1.getText()) );

}



// Variables declaration - do not modify

private javax.swing.JButton jButton1;

private javax.swing.JScrollPane jScrollPane1;

private javax.swing.JScrollPane jScrollPane2;

private javax.swing.JTextArea jTextArea1;

private javax.swing.JTextArea jTextArea2;

private javax.swing.JPanel mainPanel;

private javax.swing.JMenuBar menuBar;

private javax.swing.JProgressBar progressBar;

private javax.swing.JLabel statusAnimationLabel;

private javax.swing.JLabel statusMessageLabel;

private javax.swing.JPanel statusPanel;

// End of variables declaration



private final Timer messageTimer;

private final Timer busyIconTimer;

private final Icon idleIcon;

private final Icon[] busyIcons = new Icon[15];

private int busyIconIndex = 0;



private JDialog aboutBox;

}
java -Xms64m -Xmx256m my_prog
import javax.swing.*;

import java.awt.*;



public class JTextAreaPasteTest {



  private String testStr ="Paste text here.";



  public static void main(String argv[]) {

    EventQueue.invokeLater(new Runnable() {

      public void run() {

        new JTextAreaPasteTest();

      }

    });

  }



  public JTextAreaPasteTest () {

    JFrame frame = new JFrame();

    frame.setDefaultCloseOperation(JDialog.EXIT_ON_CLOSE);

    PasteArea wrapArea = new PasteArea("Paste text here.");

    frame.setLayout(new FlowLayout());

    frame.add(new JScrollPane(wrapArea));

    frame.pack();

    frame.setVisible(true);

  }



  private static class PasteArea extends JTextArea {



    public PasteArea(String str) {

      super(str, 20, 40);

      this.setLineWrap(true);

      this.setWrapStyleWord(true);

      this.setCaretPosition(str.length());

    }

  }

}

这是我按照教程制作的示例。有了足够的堆空间，我可以粘贴超过 200,000 行。您是否错过了事件队列中的异常？

Java.lang.OutOfMemoryError: Java heap spaces
package bossconverter;



import org.jdesktop.application.Action;

import org.jdesktop.application.ResourceMap;

import org.jdesktop.application.SingleFrameApplication;

import org.jdesktop.application.FrameView;

import org.jdesktop.application.TaskMonitor;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.Timer;

import javax.swing.Icon;

import javax.swing.JDialog;

import javax.swing.JFrame;



/**

* The application's main frame.

*/

public class BOSSConverterView extends FrameView {



public BOSSConverterView(SingleFrameApplication app) {

  super(app);



  initComponents();



  // status bar initialization - message timeout, idle icon and busy animation, etc

  ResourceMap resourceMap = getResourceMap();

  int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");

  messageTimer = new Timer(messageTimeout, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      statusMessageLabel.setText("");

    }

  });

  messageTimer.setRepeats(false);

  int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");

  for (int i = 0; i < busyIcons.length; i++) {

    busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i +"]");

  }

  busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {

    public void actionPerformed(ActionEvent e) {

      busyIconIndex = (busyIconIndex + 1) % busyIcons.length;

      statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);

    }

  });

  idleIcon = resourceMap.getIcon("StatusBar.idleIcon");

  statusAnimationLabel.setIcon(idleIcon);

  progressBar.setVisible(false);



  // connecting action tasks to status bar via TaskMonitor

  TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());

  taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {

    public void propertyChange(java.beans.PropertyChangeEvent evt) {

      String propertyName = evt.getPropertyName();

      if ("started".equals
赞 (0)
« 上一篇
下一篇 »

相关推荐

  • Spring部署设置openshift

    Springdeploymentsettingsopenshift我有一个问题让我抓狂了三天。我根据OpenShift帐户上的教程部署了spring-eap6-quickstart代码。我已配置调试选项，并且已将Eclipse工作区与OpehShift服务器同步-服务器上的一切工作正常，但在Eclipse中出现无法消除的错误。我有这个错误：cvc-complex-type.2.4.a:Invali…
    2025-04-161

  • 检查Java中正则表达式中模式的第n次出现

    CheckfornthoccurrenceofpatterninregularexpressioninJava本问题已经有最佳答案，请猛点这里访问。我想使用Java正则表达式检查输入字符串中特定模式的第n次出现。你能建议怎么做吗？这应该可以工作：MatchResultfindNthOccurance(intn,Patternp,CharSequencesrc){Matcherm=p.matcher…
    2025-04-161

  • 如何让 JTable 停留在已编辑的单元格上

    HowtohaveJTablestayingontheeditedcell如果有人编辑JTable的单元格内容并按Enter，则内容会被修改并且表格选择会移动到下一行。是否可以禁止JTable在单元格编辑后转到下一行？原因是我的程序使用ListSelectionListener在单元格选择上同步了其他一些小部件，并且我不想在编辑当前单元格后选择下一行。Enter的默认绑定是名为selectNext…
    2025-04-161

  • Weblogic 12c 部署

    Weblogic12cdeploy我正在尝试将我的应用程序从Tomcat迁移到Weblogic12.2.1.3.0。我能够毫无错误地部署应用程序，但我遇到了与持久性提供程序相关的运行时错误。这是堆栈跟踪：javax.validation.ValidationException:CalltoTraversableResolver.isReachable()threwanexceptionatorg.…
    2025-04-161

  • Resteasy Content-Type 默认值

    ResteasyContent-Typedefaults我正在使用Resteasy编写一个可以返回JSON和XML的应用程序，但可以选择默认为XML。这是我的方法：@GET@Path("/content")@Produces({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})publicStringcontentListRequestXm…
    2025-04-161

  • 代码不会停止运行，在 Java 中

    thecodedoesn'tstoprunning,inJava我正在用Java解决项目Euler中的问题10，即"Thesumoftheprimesbelow10is2+3+5+7=17.Findthesumofalltheprimesbelowtwomillion."我的代码是packageprojecteuler_1;importjava.math.BigInteger;importjava…
    2025-04-161

  • Out of memory java heap space

    Outofmemoryjavaheapspace我正在尝试将大量文件从服务器发送到多个客户端。当我尝试发送大小为700mb的文件时，它显示了"OutOfMemoryjavaheapspace"错误。我正在使用Netbeans7.1.2版本。我还在属性中尝试了VMoption。但仍然发生同样的错误。我认为阅读整个文件存在一些问题。下面的代码最多可用于300mb。请给我一些建议。提前致谢publicc…
    2025-04-161

  • Log4j 记录到共享日志文件

    Log4jLoggingtoaSharedLogFile有没有办法将log4j日志记录事件写入也被其他应用程序写入的日志文件。其他应用程序可以是非Java应用程序。有什么缺点？锁定问题？格式化？Log4j有一个SocketAppender，它将向服务发送事件，您可以自己实现或使用与Log4j捆绑的简单实现。它还支持syslogd和Windows事件日志，这对于尝试将日志输出与来自非Java应用程序…
    2025-04-161
手机版技术脚本