• getName():獲取此線程的名字
• setName():設置此線程的名字
• currentThread()：靜態的，調取當前的線程
• run():子線程要執行的代碼放入run()方法中
• start()：啟動線程並執行相應的run()方法

package com.yyx.test;

public class TestThread {
    public static void main(String[] args) {
        ThreadDemo thread1 = new ThreadDemo();
        thread1.setName("線程一");
        ThreadDemo thread2 
 
= new ThreadDemo();
        thread2.setName("線程二");
        thread1.start();
        thread2.start();
    }
}

class ThreadDemo extends Thread {

    @Override
    public void run() {
        for (int i = 1; i <= 20; i++) {
            System.out.println(Thread.currentThread().getName() + ":" + i);
        }
    }

}
 

• join():在A線程中調用B線程的join()方法，表示：當執行到此方法，A線程停止執行，直至B線程執行完畢
• sleep(long l):顯式的讓當前線程睡眠l毫秒

package com.yyx.test;

public class TestThread {
    public static void main(String[] args) {
        ThreadDemo thread = new ThreadDemo();
        thread.setName("線程一");
        thread.start();
        for(int
 
 j=1;j<=20;j++) {
            Thread.currentThread().setName("主線程");
            System.out.println(Thread.currentThread().getName() + ":" + j);
            if(j==10) {
                try {
                    thread.join();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }                
            }
            
        }
    }
}

class ThreadDemo extends Thread {

    @Override
    public void run() {
        for (int i = 1; i <= 20; i++) {
            System.out.println(Thread.currentThread().getName() + ":" + i);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

}

Java多線程Thread常用方法