10例子27.txt

来自「Java大学实用教程 耿祥义编著 课件 PPT」· 文本 代码 · 共 45 行

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Win extends JFrame implements KeyListener
{  
    JTextArea text;
    Win()
    { 
       Container con=getContentPane();
       con.setLayout(new FlowLayout());
       text=new JTextArea(30,20);
       text.addKeyListener(this);
       con.add(new JScrollPane(text),BorderLayout.CENTER);
       setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       setBounds(10,10,300,300);
       setVisible(true); 
       validate();
    }
     public void keyTyped(KeyEvent e)
    { 
     JTextArea te=(JTextArea)e.getSource(); 
     if(e.getModifiers()==InputEvent.CTRL_MASK&&e.getKeyCode()==KeyEvent.VK_X)
      {     
        te.cut();
      }
     else if(e.getModifiers()==InputEvent.CTRL_MASK&&e.getKeyCode()==KeyEvent.VK_C)
      { 
         te.copy();
      }
     else if(e.getModifiers()==InputEvent.CTRL_MASK&&e.getKeyCode()==KeyEvent.VK_V)
      { 
         te.paste();
      }
    }
    public void keyPressed(KeyEvent e) {}
    public void keyReleased(KeyEvent e) {}
}
public class Example
{  
   public static void main(String args[])
    { 
       Win win=new Win();
    }
}