java JComboBox的使用

import java.awt.Container; import java.awt.GridLayout; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.util.Vector; import javax.swing.BorderFactory; import javax.swing.JComboBox; import javax.swing.JFrame; public class JComboBoxDemo1 { public static void main(String[] args) { JFrame f = new JFrame("JComboBoxDemo1");// 创建一个JFrame对象 Container contentPane = f.getContentPane(); // 定义一个容器 contentPane.setLayout(new GridLayout(1, 2)); String[] s = { "中国", "日本", "美国", "英国", "法国", "台湾", "澳洲", "韩国" };// 定义一个字符串数组，并将其初始化 Vector v = new Vector(); v.addElement("Nokia N80"); v.addElement("Nokia 8250"); v.addElement("Motorola v8088"); v.addElement("Motorola v3"); v.addElement("Panasonic 8850"); v.addElement("其它"); JComboBox combo1 = new JComboBox(s);// 定义一个JComboBox对象 combo1.addItem("中国");// 利用JComboBox类所提供的addItem()方法，加入一个项目到此JComboBox中。 combo1.setBorder(BorderFactory.createTitledBorder("你最喜欢到哪个国家玩呢?")); JComboBox combo2 = new JComboBox(v); combo2.setBorder(BorderFactory.createTitledBorder("你最喜欢哪一种手机呢？")); contentPane.add(combo1); contentPane.add(combo2); f.pack(); f.show(); f.addWindowListener(new WindowAdapter() {// 添加窗口监听器 public void windowClosing(WindowEvent e) { System.exit(0); } }); } }