java基础-java线程如何设置优先级

java线程如何设置优先级

1.继承Thread类重写run方法

2.创建线程的实现类对象

3.threadDemo1.getPriority() 获取线程的优先级

4.threadDemo1.setPriority(10)设置线程的优先级，数越高表示获取CPU时间片的几率高，并不是每次数越大的都能优先获取

5.创建并开始新线程

public class ThreadDemo extends Thread {

//1）重写run方法

@Override

public void run() {

for (int i = 1;i < 20;i++){

System.out.println(getName()+":"+i);

}

}

public static void main(String[] args) {

// 2）创建线程的实现类对象

ThreadDemo threadDemo1 = new ThreadDemo();

ThreadDemo threadDemo2 = new ThreadDemo();

ThreadDemo threadDemo3 = new ThreadDemo();

threadDemo1.setName("线程1");

threadDemo2.setName("线程2");

//3）获取优先级

System.out.println(threadDemo1.getPriority());

System.out.println(threadDemo2.getPriority());

System.out.println(threadDemo3.getPriority());

//4）设置优先级

threadDemo2.setPriority(6);

threadDemo1.setPriority(10);

//5）创建并开始新线程

threadDemo1.start();

threadDemo2.start();

System.out.println(Thread.currentThread().getName());

}

}