展开全部

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.util.*;

/**

* @author Hardneedl

*/

final class CheckBoxDemo extends JFrame {

public String getTitle() {return "CheckBoxDemo";}

static private final Dimension size = new Dimension(600,400);

public Dimension getPreferredSize() {return size;}

public Dimension getMaximumSize() {return size;}

public Dimension getMinimumSize() {return size;}

public Dimension getSize(){return size;}

//把选中的内容放进62616964757a686964616fe4b893e5b19e31333332623433 List

final private java.util.List stringList=new ArrayList(5);

private class CheckAction extends AbstractAction{

private CheckAction(String name) {

super(name);

}

public void actionPerformed(ActionEvent e) {

Object obj=e.getSource();

if (obj instanceof JToggleButton){

JToggleButton t = (JToggleButton)obj;

if(t.isSelected())

stringList.add(t.getText());

else

stringList.remove(t.getText());

}

//打印效果

for (String s:stringList) {

System.out.print(s + "\t");

}

System.out.println();

}

}

CheckBoxDemo() throws HeadlessException {

init();

attachListeners();

doLay();

}

private JCheckBox[] buttons=new JCheckBox[4];

private void init(){

for (int i = 0,j=buttons.length;i 

buttons[i]=new JCheckBox(new CheckAction(Integer.toString(i)));

}

}

private void attachListeners(){

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

private void doLay(){

Container container = getContentPane();

container.setLayout(new FlowLayout());

for (JCheckBox button : buttons) {

container.add(button);

}

pack();

setVisible(true);

}

public static void main(String...args) {

System.setProperty("swing.defaultlaf","com.sun.java.swing.plaf.windows.WindowsLookAndFeel");

SwingUtilities.invokeLater(

new Runnable(){

public void run() {

new CheckBoxDemo();

}

}

);

}

}

import java.awt.Container;

import java.awt.GridLayout;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import javax.swing.BorderFactory;

import javax.swing.ButtonGroup;

import javax.swing.JCheckBox;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

//=================================================

// File Name :JCheckBox_demo

//------------------------------------------------------------------------------

// Author :Common

// 类名：JCheckBox

// 属性：

// 方法：

class MyCheckBox implements ItemListener{

private JFrame frame = new JFrame("窗体");

private Container cont = frame.getContentPane();

private JCheckBox jrb1 = new JCheckBox("单选1");

private JCheckBox jrb2 = new JCheckBox("单选2");

private JCheckBox jrb3 = new JCheckBox("单选3");

private JPanel pan = new JPanel();

public MyCheckBox(){

//定义一个面板的边框显示条

pan.setBorder(BorderFactory.createTitledBorder("请选择按钮"));

pan.setLayout(new GridLayout(1,3));

pan.add(this.jrb1);

pan.add(this.jrb2);

pan.add(this.jrb3);

jrb1.addItemListener(this); //加入事件监听

jrb2.addItemListener(this); //加入事件监听

jrb3.addItemListener(this); //加入事件监听

cont.add(pan);

this.frame.setSize(330,80);

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);

}

});

}

@Override

public void itemStateChanged(ItemEvent e) {

// TODO 自动生成的方法存根

if(jrb1.isSelected()){

System.out.println("jrb1");

}

if(jrb2.isSelected()){

System.out.println("jrb2");

}

if(jrb3.isSelected()){

System.out.println("jrb3");

}

}

}

//主类

//Function : JCheckBox_demo

public class JCheckBox_demo {

public static void main(String[] args) {

// TODO 自动生成的方法存根

new MyCheckBox();

}

}