prioritydemo.java

来自「压缩包内是近180多个针对Java初学者编写的简单实例」· Java 代码 · 共 56 行

//优先级演示.
class Priority implements Runnable{
	int count;
	Thread thrd;
	
	static boolean stop = false;
	static String currentName;
	
	/*创建一个新的线程. 注意构造方法并没有真正开始这个线程的运行*/
	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()+" 开始执行.");
		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()+" 结束.");
	}
}
class PriorityDemo {
	public static void main(String args[]){
		Priority mt1 = new Priority("高优先级.");
		Priority mt2 = new Priority("低优先级.");
		
		//设置优先级.
		mt1.thrd.setPriority(Thread.NORM_PRIORITY+2);
		mt2.thrd.setPriority(Thread.NORM_PRIORITY-2);
		
		//开始线程
		mt1.thrd.start();
		mt2.thrd.start();
		try{
			mt1.thrd.join();
			mt2.thrd.join();
		}catch(InterruptedException e){
			System.out.println("主线程被打断.");
		}
		System.out.println("\n高优先级线程计数到 "+
				mt1.count);
		System.out.println("\n低优先级线程计数到 "+
				mt2.count);
	}
}