JAVA有两种线程的方法Thread 和Runnable 能够使用，这是为了弥补不能多继承的缺陷

首先是 Thread

package com.sunzhiyan03;/* * 演示线程 * */public class Demo1 {	public Demo1() {		// TODO Auto-generated constructor stub	}	public static void main(String[] args) {		// TODO Auto-generated method stub		Cat cat1 = new Cat();		//启动线程,导致run函数的调用		cat1.start();	}}//继承线程class Cat extends Thread{	//重写run 函数	int times = 0;	public void run(){		while(true){			//休眠一秒			//blocked状态，释放资源			try {				Thread.sleep(1000);			} catch (InterruptedException e) {				// TODO Auto-generated catch block				e.printStackTrace();			}			times ++;			System.out.println("hello , world");			//跳出循环			if(times == 10){				break;			}		}			}	}

　　然后是Runnable

package com.sunzhiyan03;public class Demo2 {	public Demo2() {		// TODO Auto-generated constructor stub	}	public static void main(String[] args) {		// TODO Auto-generated method stub		Dog dog = new Dog();		//dog.run();		//借助Thread 的start方法进行启动		Thread t = new Thread(dog);		t.start();	}}class Dog implements Runnable{	int times = 0;	public void run(){		while(true){			try {				Thread.sleep(1000);			} catch (InterruptedException e) {				// TODO Auto-generated catch block				e.printStackTrace();			}			System.out.println("hello,world"+times);			times ++;			if(times == 10){				break;			}		}	}	}