## 实例 ~~~ public static void main(String[] args) { //继承方式 new Thread() { @Override public void run() { for (int i = 0; i < 120; i++) { System.out.println("子线程:" + i); } } }.start(); //实现方式 new Thread(new Runnable() { @Override public void run() { for (int i = 0; i < 120; i++) { System.out.println("子线程:" + i); } } }).start(); for (int i = 0; i < 20; i++) { System.out.println("main:" + i); } } ~~~