mainframe.java

利用剪贴板交换程序间数据,Java编程可编译运行

package jclipboarddemo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.datatransfer.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();
  private JTextArea jTextArea1 = new JTextArea();
  private JPanel jPanel1 = new JPanel();
  private JButton jButton1 = new JButton();
  private JButton jButton2 = new JButton();

  Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(396, 203));
    this.setTitle("JClipboardDemo");
    jButton1.setFont(new java.awt.Font("Dialog", 0, 14));
    jButton1.setText("Copy");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    jButton2.setFont(new java.awt.Font("Dialog", 0, 14));
    jButton2.setText("Paste");
    jButton2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton2_actionPerformed(e);
      }
    });
    contentPane.add(jTextArea1, BorderLayout.CENTER);
    contentPane.add(jPanel1, BorderLayout.SOUTH);
    jPanel1.add(jButton1, null);
    jPanel1.add(jButton2, null);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void jButton1_actionPerformed(ActionEvent e) {

    StringSelection ss = new StringSelection(this.jTextArea1.getText());
    cb.setContents(ss,ss);


  }

  void jButton2_actionPerformed(ActionEvent e) {
   try{
    Transferable tr = cb.getContents(this);

    if (tr != null){
      String s = (String) tr.getTransferData(DataFlavor.stringFlavor);
      if (s!=null)
      this.jTextArea1.insert(s,this.jTextArea1.getCaretPosition());
    }
   }catch(Exception err){
     err.printStackTrace();
   }

  }
}