13、线程的优先级（优先级（priority）要设置在.start之前）

线程的优先级（优先级（priority）要设置在.start之前）

1. 线程的默认优先级为5（例如主线程main的），最低的优先级为1，最大的优先级为10.其中若是大于最大的优先级10或者小于最小的优先级1。他会抛出异常不会执行
2. 优先级低cpu可能会发生先与优先级高的调度

还是要看cpu心情（麻了）

package org.example.threadpriority;public class TestPriority {public static void main(String[] args) {System.out.println(Thread.currentThread().getName()+"--->"+Thread.currentThread().getPriority());Priority priority = new Priority();Thread thread1 = new Thread(priority);Thread thread2 = new Thread(priority);Thread thread3 = new Thread(priority);Thread thread4 = new Thread(priority);Thread thread5 = new Thread(priority);Thread thread6 = new Thread(priority);thread1.start();thread2.setPriority(1);thread2.start();thread3.setPriority(4);thread3.start();thread4.setPriority(Thread.MAX_PRIORITY);thread4.start();//        thread5.setPriority(11);thread5.setPriority(8);thread5.start();//        thread6.setPriority(-1);thread6.setPriority(6);thread6.start();}
}
class Priority implements Runnable{@Overridepublic void run() {System.out.println(Thread.currentThread().getName()+"--->"+Thread.currentThread().getPriority());}
}

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