深入浅析Java中多线程优先级

这篇文章给大家介绍深入浅析Java中多线程优先级，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。

Java 多线程优先级实例详解

线程的优先级将该线程的重要性传递给调度器。尽管CPU处理现有线程集的顺序是不确定的，但是调度器将倾向于让优先权最高的线程先执行。

你可以用getPriority()来读取现有线程的优先级，并且在任何时刻都可以通过setPriority()来修改优先级。

import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class SimplePriorities implements Runnable {  private int countDown = 5;    private volatile double d;  private int priority;  public SimplePriorities(int priority){    this.priority = priority;  }  public String toString(){    //获取当前线程信息    return Thread.currentThread() + ":" + countDown;  }  @Override  public void run() {    //设置线程优先级 1-10    Thread.currentThread().setPriority(priority);    while(true){      for(int i = 0;i<100000;i++){        d += (Math.PI + Math.E) / (double)i;        if(i00 == 0){          Thread.yield();        }      }      System.out.println(this.toString());      if(--countDown == 0)return;    }  }  public static void main(String[] args) {    ExecutorService exec = Executors.newCachedThreadPool();    //优先级为1    exec.execute(new SimplePriorities(Thread.MIN_PRIORITY));    //优先级为10    exec.execute(new SimplePriorities(Thread.MAX_PRIORITY));    exec.shutdown();  }}