Java——列表框：JList

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.JFrame;
import javax.swing.JList;
import javax.swing.JRadioButton;
import javax.swing.ListSelectionModel;//=================================================
// File Name       :JList_demo
//------------------------------------------------------------------------------
// Author          :Common//类名：MyList
//属性：
//方法：
class MyList{
private JFrame frame = new JFrame("窗体");//定义窗体
private Container cont = frame.getContentPane();//得到窗体容器
private JList list1  = null;//定义列表框
private JList list2  = null;//定义列表框
public MyList(){
this.frame.setLayout(new GridLayout(1,3));//定义排版，1行2列
String nations[] = {"中国","美国","韩国","法国","英国"};
Vector<String> v = new Vector<String>();//定义一个Vector集合
v.add("Vector1");
v.add("Vector2");
v.add("Vector3");
this.list1 = new JList(nations);//实例化JList
this.list2 = new JList(v);//实例化JList
//定义一个列表框的边框显示条
list1.setBorder(BorderFactory.createTitledBorder("哪个国家？"));
list2.setBorder(BorderFactory.createTitledBorder("Vector?"));
//第一个列表框一次可以选择多个选项
list1.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
//第二个列表框每次可以选择一个选项
list2.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
cont.add(this.list1);//加入面板
cont.add(this.list2);//加入面板
this.frame.setSize(330,200);
this.frame.setVisible(true);
this.frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e) {//窗口关闭时触发，按下关闭按钮
// TODO 自动生成的方法存根
System.out.println("windowClosing-->窗口关闭");
System.exit(1);
}
});
}
}//主类
//Function        : JList_demo
public class JList_demo {public static void main(String[] args) {
// TODO 自动生成的方法存根
new MyList();
}}

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.AbstractListModel;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.ListSelectionModel;//=================================================
// File Name       :JModel_demo
//------------------------------------------------------------------------------
// Author          :Common//类名：MyListModel
//属性：
//方法：
class MyListModel extends AbstractListModel{private String nations[] = {"中国","美国","韩国","法国","英国"};@Override
public int getSize() {
// TODO 自动生成的方法存根
return this.nations.length;
}@Override
public Object getElementAt(int index) {//返回指定标号的元素
// TODO 自动生成的方法存根
if(index<this.nations.length){
return this.nations[index];
}else{
return null;
}
}
}//类名：MyList
//属性：
//方法：
class myList{
private JFrame frame = new JFrame("窗体");//定义窗体
private Container cont = frame.getContentPane();//得到窗体容器
private JList list1  = null;//定义列表框
private JList list2  = null;//定义列表框
public myList(){
this.list1 = new JList(new MyListModel());
this.list2 = new JList(new MyListModel());
//定义一个列表框的边框显示条
list1.setBorder(BorderFactory.createTitledBorder("哪个国家？"));
list2.setBorder(BorderFactory.createTitledBorder("Vector?"));
//第一个列表框一次可以选择多个选项
list1.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
//第二个列表框每次可以选择一个选项
list2.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
cont.add(this.list1);//加入面板
cont.add(this.list2);//加入面板
this.frame.setSize(330,200);
this.frame.setVisible(true);
this.frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e) {//窗口关闭时触发，按下关闭按钮
// TODO 自动生成的方法存根
System.out.println("windowClosing-->窗口关闭");
System.exit(1);
}
});
}
}//主类
//Function        : JModel_demo
public class JModel_demo {public static void main(String[] args) {
// TODO 自动生成的方法存根
new MyList();
}}

监听只能加一个

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.AbstractListModel;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;//=================================================
// File Name       :JModel_demo
//------------------------------------------------------------------------------
// Author          :Common//类名：MyListModel
//属性：
//方法：
class MyListModel extends AbstractListModel{private String nations[] = {"中国","美国","韩国","法国","英国"};@Override
public int getSize() {
// TODO 自动生成的方法存根
return this.nations.length;
}@Override
public Object getElementAt(int index) {//返回指定标号的元素
// TODO 自动生成的方法存根
if(index<this.nations.length){
return this.nations[index];
}else{
return null;
}
}
}//类名：MyList
//属性：
//方法：
class myList implements ListSelectionListener{
private JFrame frame = new JFrame("窗体");//定义窗体
private Container cont = frame.getContentPane();//得到窗体容器
private JList list1  = null;//定义列表框
//private JList list2  = null;//定义列表框
public myList(){
this.list1 = new JList(new MyListModel());
//this.list2 = new JList(new MyListModel());
//定义一个列表框的边框显示条
list1.setBorder(BorderFactory.createTitledBorder("哪个国家？"));
//list2.setBorder(BorderFactory.createTitledBorder("Vector?"));
//第一个列表框一次可以选择多个选项
list1.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
//第二个列表框每次可以选择一个选项
//list2.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);list1.addListSelectionListener(this); //加入事件监听
//list2.addListSelectionListener(this); //加入事件监听
cont.add(new JScrollPane(this.list1));//加入滚动条cont.add(this.list1);//加入面板
//cont.add(this.list2);//加入面板
this.frame.setSize(330,200);
this.frame.setVisible(true);
this.frame.addWindowListener(new WindowAdapter(){//加入事件监听
public void windowClosing(WindowEvent arg0) {//窗口关闭时触发，按下关闭按钮
// TODO 自动生成的方法存根
System.out.println("windowClosing-->窗口关闭");
System.exit(1);
}
});
}public void valueChanged(ListSelectionEvent e) {
// TODO 自动生成的方法存根
int temp[] = list1.getSelectedIndices();//取得全部选定
System.out.println("选定的内容：");
for(int i=0;i<temp.length;i++){
System.out.println(list1.getModel().getElementAt(i)+"、");
}
}
}//主类
//Function        : JModel_demo
public class JModel_demo {public static void main(String[] args) {
// TODO 自动生成的方法存根
new myList();
}}