hw17_13.java

JAVA 2面向对象程序设计(习题参考答案9-17).rar

import java.awt.*;  
import java.awt.event.*;  
public class hw17_13 extends Frame 
{
   static hw17_13 frm=new hw17_13();
   static Scrollbar scr1=new Scrollbar();
   static Scrollbar scr2=new Scrollbar(); 
   static Scrollbar scr3=new Scrollbar();   
   static Label lab1=new Label("Hello Java",Label.CENTER);
   static Label lab2=new Label("size=20",Label.CENTER);
   
   public static void main(String args[])
   {
      frm.setLayout(null);
      frm.setTitle("Scrollbar Demo");
      frm.setSize(200,150);        
      scr1.setValues(20,4,12,40);       
      frm.add(scr1);
      frm.add(scr2);
      frm.add(scr3);
      frm.add(lab1);
      frm.add(lab2);  
      lab1.setFont(new Font("Dialog",Font.PLAIN,20));
      lab2.setBackground(Color.orange);
      frm.setVisible(true);  
   }
  
}