传统线程技术回顾

创建线程的两种传统方式在Thread子类覆盖的run方法中编写运行代码涉及一个以往知识点：能否在run方法声明上抛出InterruptedException异常，以便省略run方法内部对Thread.sleep()语句的try…catch处理？在传递给Thread对象的Runnable对象的run方法中编写代码总结：查看Thread类的run()方法的源代码，可以看到其实这两种方式都是在调用Thread对象的run方法，如果Thread类的run方法没有被覆盖，并且为该Thread对象设置了一个Runnable对象，该run方法会调用Runnable对象的run方法。问题：如果在Thread子类覆盖的run方法中编写了运行代码，也为Thread子类对象传递了一个Runnable对象，那么，线程运行时的执行代码是子类的run方法的代码？还是Runnable对象的run方法的代码？涉及到的一个以往知识点：匿名内部类对象的构造方法如何调用父类的非默认构造方法。定时器的应用Timer类TimerTask类public class ThreadDemo {public static void main(String[] args) {Thread thread = new Thread() {public void run() {while (true) {try {Thread.sleep(5);} catch (InterruptedException e) {e.printStackTrace();}System.out.println("1" + Thread.currentThread().getName());System.out.println("2" + this.getName());}}};thread.start();Thread thread2 = new Thread(new Runnable() {public void run() {while (true) {try {Thread.sleep(40);} catch (InterruptedException e) {e.printStackTrace();}System.out.println("5" + Thread.currentThread().getName());}}});thread2.start();new Thread(new Runnable() {public void run() {while (true) {try {Thread.sleep(40);} catch (InterruptedException e) {e.printStackTrace();}System.out.println("56" + Thread.currentThread().getName());}}}){public void run() {while (true) {try {Thread.sleep(40);} catch (InterruptedException e) {e.printStackTrace();}System.out.println("85" + Thread.currentThread().getName());}};}.start();}}