一个简单的布局和时间的组合程序，没什么可借鉴的的地方，只是作为曾经做过的一个标志。 import java.awt.*;import java.awt.event.*;import javax.swing.*; public class Copy extends JFrame implements ActionListener{JPanel p1,p2;TextField t1,t2;Label l1,l2;JButton b1,b2; public static void main(String args[]) {new Copy(); } Copy() {addWindowListener(new WindowAdapter()  {public void windowClosing(WindowEvent e)   {System.exit(0);   }  });  setLayout(new GridLayout(2,1));  p1=new JPanel();p2=new JPanel();t1=new TextField();t2=new TextField();  l1=new Label();l2=new Label();b1=new JButton("复制");b2=new JButton("复制");  p1.setLayout(new BorderLayout());  p2.setLayout(new GridLayout(3,1));  p1.add("North",t1);p1.add("East",b1);p1.add("Center",l1);  p2.add(t2);p2.add(l2);p2.add(b2);  b1.addActionListener(this);b2.addActionListener(this);  add(p1);add(p2);setVisible(true);setSize(500,400); } public void actionPerformed(ActionEvent e) {if(e.getSource()==b1)l1.setText(t1.getText());  else if(e.getSource()==b2)l2.setText(t2.getText()); }}

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