public?class?ArmyRunnable?implements?Runnable?{
	//這里使用volatile保證線程可以正確的讀取其他線程寫入的值
	volatile?boolean?keepRunning=true?;

	//軍隊線程
????//用來模擬作戰
	public?void?run()?{
	
		while?(keepRunning){
			//發動五連擊
			for(int?i=0;i<5;i++){
				System.out.println(Thread.currentThread().getName()+"進攻"+i+"次");
				//讓出處理器的時間，下次誰攻擊還不一定
				Thread.yield();
			}
			
		}
		
		System.out.println(Thread.currentThread().getName()+"停止攻擊");
		

	}

}
public?class?Stage?extends?Thread?{
	//復寫run方法
	public?void?run(){
		ArmyRunnable?armyTaskOfSuiDynasty=new?ArmyRunnable();
		ArmyRunnable?armyTaskOfFarmer=new?ArmyRunnable();
		
		//使用Runnable創建線程
		Thread?armyOfSuiDynasty=new?Thread(armyTaskOfSuiDynasty,"隋朝軍隊");
		Thread?armyOfFarmer=new?Thread(armyTaskOfFarmer,"農民軍隊");
		
		//線程的運行
		armyOfSuiDynasty.start();
		armyOfFarmer.start();
		//讓舞臺線程休眠，大家能夠專心觀看軍隊的廝殺
		try?{
			Thread.sleep(50);
		}?catch?(InterruptedException?e)?{
			
			e.printStackTrace();
			armyTaskOfSuiDynasty.keepRunning=false;
			armyTaskOfFarmer.keepRunning=false;
			try?{
				armyOfFarmer.join();
			}?catch?(InterruptedException?e1)?{
				
				e1.printStackTrace();
			}
			
		}
		
				
				
		
	}
	
	
	public?static?void?main(String?[]args){
		new?Stage().start();
		
	}

}
這個程序運行起來是個死循環啊