ex_11_2_3.java

JAVA程序设计与实践.rar

/*
 *文件名:ex_11_2_3.java
 *说  明:演示多线程并发工作
 */
// 单线程类
class NewThread implements Runnable 
{
	String name; // 线程名
	Thread t;
	// 构造方法
	NewThread(String threadname) 
	{
		name = threadname;
		t = new Thread(this, name);
		System.out.println("New thread: " + t);
		// 启动线程
		t.start(); 
	}

	public void run() 
	{
		try 
		{
			for(int i = 5; i > 0; i--) 
			{
				System.out.println(name + ": " + i);
				Thread.sleep(1000);
			}
		} catch (InterruptedException e) 
		{
			System.out.println(name + "中断");
		}	
		System.out.println(name + " 退出");
	}
}
//主类
class ex_11_2_3 
{
	public static void main(String args[]) 
	{
		//启动多个线程
		new NewThread("线程1");
		new NewThread("线程2");
		new NewThread("线程3");
		try {

			Thread.sleep(10000);
		} catch (InterruptedException e) 
		{
			System.out.println("主线程中断");
		}
		System.out.println("退出主线程");
	}
}