ex_9_3_1.java

java小程序

import   java.awt.*;   
  import   javax.swing.*;   
  public   class   ex_9_3_1   extends   JFrame{   
  //声明JLabel组件   
  private   JLabel   label1,label2,label3;   
  private   Container   container;   
  //构造方法   
  public   ex_9_3_1(){   
  super("   测试标签   ");   
  //获得容器   
  container=getContentPane();//new Container();   
  container.setLayout(new   FlowLayout());   
  Icon   img=new   ImageIcon("gif-0415.gif");   
  label2=new   JLabel("图片一",img,SwingConstants.CENTER);   
  label2.setToolTipText("标签提示之一");   
  container.add(label2); 
  Icon   img1=new   ImageIcon("gif-0412.gif");   
  label1=new   JLabel("图片二",img1,SwingConstants.LEFT);   
  label1.setToolTipText("标签提示之二");     
  container.add(label1);  
  Icon   img2=new   ImageIcon("gif-0179.gif");   
  label2=new   JLabel("图片三",img2,SwingConstants.LEFT);   
  label2.setToolTipText("标签提示之三");   
  container.add(label2);   
  setSize(275,170);   
  setVisible(true);   
  }   
  public   static   void   main(String   args[]){   
  ex_9_3_1   ex=new   ex_9_3_1();   
  ex.addWindowListener(new MyWindowListener());  
  }   
  }