线程优先级
thread- 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
- 线程优先级用数字表示，范围从1~10（线程的调度由CPU决定，数字越大概率越大）
- Thread.MIN_PRIORITY = 1
- Thread.NORM_PRIORITY = 5
- Thread.MAX_PRIORITY = 10
- 使用以下方法改变或获取线程优先级
- getPriority()
- setPriority(int xxx)
public class TestThreadPriority {
public static void main(String[] args) {
// 打印主线程默认优先级
System.out.println(Thread.currentThread().getName() + "====" + Thread.currentThread().getPriority());
Priority priority = new Priority();
Thread t1 = new Thread(priority, "t1");
Thread t2 = new Thread(priority, "t2");
Thread t3 = new Thread(priority, "t3");
Thread t4 = new Thread(priority, "t4");
Thread t5 = new Thread(priority, "t5");
Thread t6 = new Thread(priority, "t6");
t1.start();
t2.setPriority(1);
t2.start();
t3.setPriority(4);
t3.start();
t4.setPriority(Thread.MAX_PRIORITY);
t4.start();
t5.setPriority(6);
t5.start();
t6.setPriority(8);
t6.start();
}
}
class Priority implements Runnable {
@Override
public void run() {
System.out.println(Thread.currentThread().getName() + "====" + Thread.currentThread().getPriority());
}
}
参考资料：