布局管理器

//JButton1.java
//布局管理器
//2009-10-26 《程序设计百事通》

//<applet code=JButton1 width=400 height=500>
//</applet>

 

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

 

public class JButton1 extends JApplet
{
 
  JButton testButton1=new JButton("button1");
  JButton testButton2=new JButton("button2");
  JButton testButton3=new JButton("button3");
  JButton testButton4=new JButton("button4");
  JButton testButton5=new JButton("button5");

  JPanel xP=new JPanel();//JPanel 即是构件，也是一个小的layout
  JPanel yP=new JPanel();

  public void init(){
   Container cp=getContentPane();
   cp.setLayout(new FlowLayout());//将JPanel对象由FlowLayout管理
   cp.add(xP);
   cp.add(yP);
   BoxLayout bl=new BoxLayout(xP,BoxLayout.X_AXIS);//将Button1、Button2、Button3放入xP，X_AXIS X轴
   xP.setLayout(bl);   
   xP.add(testButton1);
   xP.add(testButton2);
   xP.add(testButton3);

   yP.setLayout(new BoxLayout(yP,BoxLayout.Y_AXIS));//将Button4、Button5放入yP。  
   yP.add(testButton4);
   yP.add(testButton5);
   
  }
 
}