jcheckboxtest.java

详细讲解了java的基础知识

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

public class JCheckBoxTest extends JApplet {
				
	JCheckBox[] checkBoxes = new JCheckBox[] {
		new JCheckBox(),
		new JCheckBox("马上送货！"),
		new JCheckBox("家电",true),
		new JCheckBox(new ImageIcon("cellphone1.gif")),
		new JCheckBox(new ImageIcon("v8.gif"), false),		
		new JCheckBox("主机",new ImageIcon("pc.gif")),
		new JCheckBox("磁盘",new ImageIcon("disk.gif"), true)
	};
		
	public void init(){
		//this.getContentPane().setLayout(new GridLayout(4,2,5,5));
		this.getContentPane().setLayout(new FlowLayout());
		
		for(int i=0; i < checkBoxes.length; ++i) {
			checkBoxes[i].setBorderPainted(true);
			this.getContentPane().add(checkBoxes[i]);
			checkBoxes[i].addItemListener(new itemListener());
		}
		this.resize(300,200);
	}
	class itemListener implements ItemListener {
		public void itemStateChanged(ItemEvent event) {
		int totality=0;
		for(int i=0; i < checkBoxes.length; ++i) {
			if (checkBoxes[i].isSelected()){ totality++;}
		}	
		showStatus("您共选了:"+totality+"  项");	
		}
	}
	
}