线程优先级
Java提供一个线程调度器来监控程序中启动后进入就绪状态的所有线程,线程调度器按照优先级决定应该调度哪个线程来执行。
线程的优先级用数字表示,范围从1~10
Thread.MIN_PRIORITY=1;
Thread.MAX_PRIORITY=10;
Thread.NORM_PRIORITY=5;
使用以下方式改变或获取优先级
getPriority().setPriority(int xxx);
优先级的设置建议在start()调度之前。
public class TestPriority extends Thread {
public static void main(String[] args) {
//主线程优先级
System.out.println(Thread.currentThread().getName()+"--->"+Thread.currentThread().getPriority());
MyPriority myPriority=new MyPriority();
Thread t1=new Thread(myPriority);
Thread t2=new Thread(myPriority);
Thread t3=new Thread(myPriority);
Thread t4=new Thread(myPriority);
Thread t5=new Thread(myPriority);
Thread t6=new Thread(myPriority);
//设置优先级。在启动
t1.start();
t2.setPriority(1);
t2.start();
t3.setPriority(4);
t3.start();
t4.setPriority(Thread.MAX_PRIORITY);
t4.start();
t5.setPriority(7);
t5.start();
t6.setPriority(9);
t6.start();
}
}
class MyPriority implements Runnable{

浙公网安备 33010602011771号