自由手記

範例下載

import java.awt.GridLayout;
import javax.swing.*;

class jcombobox extends JFrame{
public static void main(String[] args){
jcombobox jbox=new jcombobox();
}
public jcombobox(){

JLabel jl1=new JLabel("籍貫");
JLabel jl2=new JLabel("現在所在城市");

JPanel jp1,jp2;

String[] jiguan={"湖南","江蘇","廣州"};
String[] city={"北京","上海","長沙","深圳","南京"};
JComboBox box1=new JComboBox(jiguan);
JList jlist=new JList(city);
jlist.setVisibleRowCount(3);
//設置滾動控制項
JScrollPane jsp=new JScrollPane(jlist);

//設置風格佈局
this.setLayout(new GridLayout(2,1));
//設置第一塊面板
jp1=new JPanel();
jp1.add(jl1);
jp1.add(box1);
this.add(jp1);
//設置第二塊面板
jp2=new JPanel();
jp2.add(jl2);
jp2.add(jsp);
this.add(jp2);

this.setTitle("JComboBox的使用");
this.setSize(200,200);
this.setLocation(100,100);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
}

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