e1203.java

java小程序

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class E1203 extends JFrame implements ActionListener
{
private String name[]={"一","二","三","四","五","六"};
private JButton button[]=new JButton[name.length];
private Container c;
private int i=0;
public E1203()
{
super("E1203.java:转换格子布局");
c=getContentPane();
c.setLayout(new GridLayout(2,3,4,4));
for(int i=0;i<name.length;i++)
{
button[i]=new JButton(name[i]);
button[i].addActionListener(this);
c.add(button[i]);
}
setSize(300,200);
setVisible(true);
}

public void actionPerformed(ActionEvent e)
{
i++;
if(i%2==1)
c.setLayout(new GridLayout(3,2,4,4));
else if(i%2==0)
c.setLayout(new GridLayout(2,3,4,4));
setSize(300,200);
setVisible(true);
}

public static void main(String args[])
{
E1203 app=new E1203();
app.addWindowListener(new MyWindowListener());
}
}