//继承thread类class PrimeThread extends Thread{	long minPrime;	PrimeThread(long minPrime)	{		this.minPrime=minPrime;	}	public void run(){		//computer primes larger than minPrime	}}//调用方法PrimeThread p=new PrimeThread(143);p.start();//调用Runnable接口class PrimeRun implements Runnable{	long minPrime;	PrimeRun(long minPrime){		this.minPrime=minPrime;	}	public void run(){		//compuyer primes larger than minPrime	}}//调用方法PrimeRun p=new PrimeRun(143);new Thread(p).start();