1、传统线程创建回顾

1、直接使用Thread新建线程

package com.yzl;

public class ThreadPart_1 {

//直接使用Thread对象新建线程并重run方法
public void test1(){
Thread thread1 = new Thread(){
@Override
public void run() {
super.run();
for(int i=1; i<=10; i++){
System.out.println("Thread：" + Thread.currentThread().getName() + ",value is：" + i);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
};
thread1.start();
}

public static void main(String[] args) {
System.out.println("Main Thread：" + Thread.currentThread().getName() + " is run ");
ThreadPart_1 test = new ThreadPart_1();
test.test1();
}
}

运行结果：

Main Thread：main is run
Thread：Thread-0,value is：1
Thread：Thread-0,value is：2
Thread：Thread-0,value is：3
Thread：Thread-0,value is：4
Thread：Thread-0,value is：5
Thread：Thread-0,value is：6
Thread：Thread-0,value is：7
Thread：Thread-0,value is：8
Thread：Thread-0,value is：9
Thread：Thread-0,value is：10

2、使用Runnable接口新建线程（从面向对象的角度这方法更好）

//使用Runnable接口新建线程
public void test2(){
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
for(int i=1; i<=10; i++){
System.out.println("Thread：" + Thread.currentThread().getName() + ",value is：" + i);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
});
thread.start();
}

public static void main(String[] args) {
System.out.println("Main Thread：" + Thread.currentThread().getName() + " is run ");
ThreadPart_1 test = new ThreadPart_1();
test.test2();
}

运行结果：

Main Thread：main is run
Thread：Thread-0,value is：1
Thread：Thread-0,value is：2
Thread：Thread-0,value is：3
Thread：Thread-0,value is：4
Thread：Thread-0,value is：5
Thread：Thread-0,value is：6
Thread：Thread-0,value is：7
Thread：Thread-0,value is：8
Thread：Thread-0,value is：9
Thread：Thread-0,value is：10

3、有趣一个测试

//有趣的测试
public void test3(){
Thread thread = new Thread(
new Runnable() {
@Override
public void run() {
System.out.println("Runnable run method is runing~~~");
}
}
){
@Override
public void run() {
System.out.println("Thread run method is runing~~~");
}
};
thread.start();
}

public static void main(String[] args) {
System.out.println("Main Thread：" + Thread.currentThread().getName() + " is run ");
ThreadPart_1 test = new ThreadPart_1();
test.test3();
}

运行结果：

Main Thread：main is run
Thread run method is runing~~~

原因：



但是上面这run方法运行的前提是没有人去重写该方法，而我们上面的代码却重写了，导致上面这图片中的代码无法运行，故运行的是thread的run方法。