1 package com.soft.test; 2  3 /** 4  * 下拉列表、下拉框、滚动条的使用 5  */ 6  7 import javax.swing.*; 8 import java.awt.*; 9 public class Dem5 extends JFrame {10 11 12  private JPanel jp1, jp2;13  private JLabel jlb1, jlb2;14  private JComboBox jb1;15  private JList jl;16  private JScrollPane jsp;17  18  public Dem5() {19   jp1 = new JPanel();20   jp2 = new JPanel();21   jlb1 = new JLabel("籍贯");22   jlb2 = new JLabel("旅游地点");23   24   25   String []jz = {
   "南昌","赣州","吉安","新余","鹰潭","景德镇","抚州"};26   jb1 = new JComboBox(jz);27   String []ly = {
   "三清山","将军园","龙虎山","庐山","腾王阁"};28   29   jl = new JList(ly);30   jsp = new JScrollPane(jl);31   jl.setVisibleRowCount(3);32   33   this.setLayout(new GridLayout(3, 1));34   35   jp1.add(jlb1);36   jp1.add(jb1);37   jp2.add(jlb2);38   jp2.add(jsp);39   this.add(jp1);40   this.add(jp2);41   this.setSize(300,300);42   this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);43   this.setLocation(300,300);44   this.setVisible(true);45   this.setResizable(false);  46  }47  48  public static void main(String args[]) {49   50   Dem5 dem5 = new Dem5();51  }52 }