线程优先级.Priority()

//MyThread线程
class MyThread extends Thread {
    String name;
    String sign;

    //Alt+Insert,Constructor 快速创建MyThread线程的构造方法
    public MyThread(String name, String sign) {
        this.name = name;
        this.sign = sign;
    }

    public void run() {//线程要执行的任务
        System.out.println(name + ":" + sign);
    }
}

public class Demo {
    public static void main(String[] args) {
        for (int i = 0; i < 10; i++) {
            MyThread m1 = new MyThread("加", "+");//调用构造方法
            MyThread m2 = new MyThread("减", "-");
            MyThread m3 = new MyThread("乘", "×");
            MyThread m4 = new MyThread("除", "÷");
//线程优先级1-10,10优先级最高
            m1.setPriority(1);
            m2.setPriority(4);
            m3.setPriority(7);
            m4.setPriority(10);
//启动线程
            m1.start();
            m2.start();
            m3.start();
            m4.start();

        }
    }
}