前面说过，runnable中的run才是线程最终要执行的内容
public class MyThread extends Thread {
@Override
public void run() {
System.out.println("this is my thread");
}
}
public class MyRunnable implements Runnable {
@Override
public void run() {
System.out.println("this is my runnable");
}
}
实例化
public static void main(String[] args) {
MyThread myThread = new MyThread();
Thread myRunnable = new Thread(new MyRunnable());
System.out.println("main Thread begin");
myThread.start();
myRunnable.start();
System.out.println("main Thread end");
}
输出
main Thread begin
main Thread end
this is my thread
this is my runnable
最后的打印打印在线程run之前，主线程不需要等待子线程完成
值得注意，线程不可以直接调用 run()，直接调用 run() 不会创建线程，而是主线程直接执行 run() 的内容，相当于执行普通函数。
public static void main(String[] args) {
MyThread myThread = new MyThread();
Thread myRunnable = new Thread(new MyRunnable());
System.out.println("main Thread begin");
myThread.run();
myRunnable.run();
System.out.println("main Thread end");
}
输出
main Thread begin
this is my thread
this is my runnable
main Thread end
