ch9_17.java

java图形用户界面设计 包括如何创建窗体 设计界面 管理布局 绘制图形 使用组件 事件编程等

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.Vector;
public class ch9_17 extends JFrame
{
    public ch9_17()
    {
        super("测试下拉列表框");
        setBounds(20,20,600,400);
        getContentPane().setLayout(null);
    }
    public static void main(String [] args)
    {
        ch9_17 f=new ch9_17();
        
        String [] s={"美国","日本","大陆","英国","法国"};
        Vector v=new Vector();
        v.addElement("Nokia 8850");
        v.addElement("Nokia 8250");
        v.addElement("Motorola V8088");
        v.addElement("Nokia 880");
        
        JComboBox jcb=new JComboBox(s);
        jcb.addItem("台湾");
        jcb.setBorder(BorderFactory.createTitledBorder("列表"));
        jcb.setBounds(20,20,80,50);
        
        JComboBox jcb1=new JComboBox(v);
        jcb1.setBorder(BorderFactory.createTitledBorder("手机列表"));
        jcb1.setBounds(120,20,80,50);
        
        f.getContentPane().add(jcb);
        f.getContentPane().add(jcb1);
        
        f.show();
    }
}