Java中创建与启动线程（Threading）的代码示范

Java中创建与启动线程（Threading）的代码演示
转自：http://java.chinaitlab.com/line/373702.html

public class MyThread_1 extends Thread
{
public void run()
{
//some code 
}
}

当使用继承创建线程，这样启动线程：

new MyThread_1().start()

eg.实现Runnable接口

public class MyThread_2 implements Runnable
{
public void run()
{
//some code 
}
}

当使用实现接口创建线程，这样启动线程：

new Thread(new MyThread_2()).start()

例子：
1、实现Runnable接口的多线程例子

/** 
* 实现Runnable接口的类 
* 
* @author leizhimin 2008-9-13 18:12:10 
*/ 
public class DoSomething implements Runnable { 
    private String name; 
    public DoSomething(String name) { 
        this.name = name; 
    } 
    public void run() { 
        for (int i = 0; i < 5; i++) { 
            for (long k = 0; k < 100000000; k++) ; 
            System.out.println(name + ": " + i); 
        } 
    } 
}
public class TestRunnable { 
    public static void main(String[] args) { 
        DoSomething ds1 = new DoSomething("阿三"); 
        DoSomething ds2 = new DoSomething("李四"); 
        Thread t1 = new Thread(ds1); 
        Thread t2 = new Thread(ds2); 
        t1.start(); 
        t2.start(); 
    } 
}

执行结果：
李四:&nbsp0&nbsp
阿三:&nbsp0&nbsp
李四:&nbsp1&nbsp
阿三:&nbsp1&nbsp
李四:&nbsp2&nbsp
李四:&nbsp3&nbsp
阿三:&nbsp2&nbsp
李四:&nbsp4&nbsp
阿三:&nbsp3&nbsp
阿三:&nbsp4&nbsp

2、继承Thread类实现的多线程例子

/** 
* 测试扩展Thread类实现的多线程程序 
* 
* @author leizhimin 2008-9-13 18:22:13 
*/ 
public class TestThread extends Thread{ 
    public TestThread(String name) { 
        super(name); 
    } 
    public void run() { 
        for(int i = 0;i<5;i++){ 
            for(long k= 0; k <100000000;k++); 
            System.out.println(this.getName()+" :"+i); 
        } 
    } 
    public static void main(String[] args) { 
        Thread t1 = new TestThread("阿三"); 
        Thread t2 = new TestThread("李四"); 
        t1.start(); 
        t2.start(); 
    } 
}

执行结果：
阿三&nbsp:0&nbsp
李四&nbsp:0&nbsp
阿三&nbsp:1&nbsp
李四&nbsp:1&nbsp
阿三&nbsp:2&nbsp
李四&nbsp:2&nbsp
阿三&nbsp:3&nbsp
阿三&nbsp:4&nbsp
李四&nbsp:3&nbsp
李四&nbsp:4&nbsp