multithreaddemo2.java

java程序设计语言源代码

//Example 2 of Chapter 8

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

public class MultiThreadDemo2 extends JFrame
{
	private ScrollPane scrollPane;
	private JTextArea area;
	
	public MultiThreadDemo2()
	{
		super( "多线程输出演示" );
		getContentPane().setLayout( new BorderLayout() );
		scrollPane = new ScrollPane();
		area = new JTextArea();
		area.setEditable( false );
		scrollPane.add( area );
		getContentPane().add( scrollPane, BorderLayout.CENTER );
		
		OutputThread no1 = new OutputThread( "Number1" );
		OutputThread no2 = new OutputThread( "Number2" );
		OutputThread no3 = new OutputThread( "Number3" );
		no1.start();
		no2.start();
		no3.start();
		
		setSize( 240, 400 );
		setVisible( true );
	}
	
	public static void main(String[] args)
	{
		MultiThreadDemo2 demo = new MultiThreadDemo2();
		demo.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
	}
	
	private class OutputThread extends Thread
	{
		public OutputThread( String name )
		{
			super( name );
		}
		
		public void run()
		{
			for(int i=5; i>0; i--)area.append( "( "+i+" )这是线程" + getName() + "\n" );
			area.append( "退出线程" + getName() + "\n" );
		}
	}
}