Thread常用API

setname方法每个线程取名

需要创建构造器 线程设置名字

package Thread_api_test;
 
// 继承Thread类
public class MyThread extends Thread {
 
    //创建构造器 线程设置名字
    public MyThread(String name){
        super(name);
    }
 
 
    @Override
    public void run() {
        super.run();
        Thread m=Thread.currentThread();
 
        for (int i = 1; i <= 3; i++) {
            System.out.println(m.getName()+"子类线程输出：" + i);
 
        }
    }
}

package Thread_api_test;
 
public class THreadTest {
    public static void main(String[] args) {
        Thread T1 = new MyThread("1号线程");
       // T1.setName("子线程0");//  Thread-1
        T1.start();
        System.out.println(T1.getName());
 
        Thread T2 = new MyThread("1号线程");  //Thread-0
       // T2.setName("子线程1");
        T2.start();
        System.out.println(T2.getName());
 
 
        //主线程对象的名字
        //那个线程执行它 他就会得到那个线程对象
       Thread m=Thread.currentThread();
      // m.setName("最牛的线程");
        System.out.println(m.getName());
        for (int i = 1; i <=5; i++) {
            System.out.println(m.getName()+"线程输出：" + i);
 
        }
    }
}

join的小案例

package Thread_api_test;
 
public class THreadTest1 {
    public static void main(String[] args) throws Exception{
        for (int i = 1; i <5 ; i++) {
            if (i==3){
                System.out.println(i);
                //循环停5秒以后再执行
                Thread.sleep(5000);
            }
 
        }
        
        //三个线程指定的循序执行
        Thread t1 = new MyThread("1号线程");
        t1.start();
        t1.join();
 
        Thread t2 = new MyThread("2号线程");
        t2.start();
        t2.join();
 
        Thread t3 = new MyThread("3号线程");
        t3.start();
        t3.join();
    }
}