怎样使JTextArea只能复制、粘贴，不许修改？

[hccpro]

[BrentIvan]

在KeyDown时间中处理

[hccpro]

有没有更好的办法？

（最后分数一定给！）

[v不吃v你]

//用继承写一个自己的TextArea.
//希望这个程序能帮助你想出更好的方法
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.awt.datatransfer.*;

public class NoEditArea extends JTextArea {

public NoEditArea(String string,int rows,int columns){

super(string,rows,columns);
addKeyListener(new KeyAdapter(){

public void keyTyped(KeyEvent key) {
key.consume();
}

public void keyPressed(KeyEvent key) {

JTextArea temp = (JTextArea)key.getSource();
int caretPos = temp.getCaretPosition();
switch(key.getKeyCode()) {
case(KeyEvent.VK_LEFT):
case(KeyEvent.VK_BACK_SPACE) : if(caretPos > 0) { temp.setCaretPosition(caretPos - 1); } break;
case(KeyEvent.VK_RIGHT) : if(caretPos < temp.getText().length()) { temp.setCaretPosition(caretPos + 1); } break;
case(KeyEvent.VK_DELETE):System.out.println("aaa");break;
default : break;
}
key.consume();
}

public void keyReleased(KeyEvent key) {
key.consume();
}
});
}

public static void main(String[] args) {
JFrame frame = new JFrame("Non-Delete");
JButton pastebutton = new JButton("Paste");
JPanel panel = new JPanel();
final NoEditArea area = new NoEditArea("can't delete",30,50);

pastebutton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable content = cb.getContents(this);
try {
String s = (String)content.getTransferData(DataFlavor.stringFlavor);
area.setText(s);
}
catch (Throwable exc) {
System.err.println(e);
}
}
});

panel.add(pastebutton,BorderLayout.NORTH);
panel.add(area,BorderLayout.CENTER);
frame.getContentPane().add(panel);
frame.setSize(250,100);
frame.setVisible(true);
frame. addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
});

}
}

[hccpro]

感谢前面的前辈！！！！！非常感谢！


:::::::::: 尤其是bootcool，为很多菜鸟都解答问题，而且全都附源码！！真是厉害！

:::::::::: 高手、高手啊！