//優(yōu)先級演示.
class Priority implements Runnable{
	int count;
	Thread thrd;
	
	static boolean stop = false;
	static String currentName;
	
	/*創(chuàng)建一個新的線程. 注意構造方法并沒有真正開始這個線程的運行*/
	Priority(String name){
		thrd = new Thread(this, name);
		count =0;
		currentName = name;
	}
	
	//Begin execution of new thread.
	public void run(){
		System.out.println(thrd.getName()+" 開始執(zhí)行.");
		do{
			count++;
			
			if(currentName.compareTo(thrd.getName())!=0){
				currentName = thrd.getName();
				System.out.println("在 "+currentName);
			}
		}while((stop==false)&&(count<100000000));
		stop= true;
		
		System.out.println("\n"+thrd.getName()+" 結束.");
	}
}
class PriorityDemo {
	public static void main(String args[]){
		Priority mt1 = new Priority("高優(yōu)先級.");
		Priority mt2 = new Priority("低優(yōu)先級.");
		
		//設置優(yōu)先級.
		mt1.thrd.setPriority(Thread.NORM_PRIORITY+2);
		mt2.thrd.setPriority(Thread.NORM_PRIORITY-2);
		
		//開始線程
		mt1.thrd.start();
		mt2.thrd.start();
		try{
			mt1.thrd.join();
			mt2.thrd.join();
		}catch(InterruptedException e){
			System.out.println("主線程被打斷.");
		}
		System.out.println("\n高優(yōu)先級線程計數(shù)到 "+
				mt1.count);
		System.out.println("\n低優(yōu)先級線程計數(shù)到 "+
				mt2.count);
	}
}