1、通过继承Thread类的方式创建多线程(这里只是简单的代码演示创建多线程的方法)
1 package com.baozi.exer;
2
3 public class ThreadDemo {
4 public static void main(String[] args) {
5 Thread1 t1=new Thread1();
6 Thread2 t2=new Thread2();
7 t2.start();
8 t1.start();
9 }
10 }
11 class Thread1 extends Thread {
12 @Override
13 public void run() {
14 for (int i = 0; i <= 100; i++) {
15 if (i % 2 == 0) {
16 System.out.println(Thread.currentThread().getName() + " : " + i);
17 }
18 }
19 }
20 }
21 class Thread2 extends Thread {
22 @Override
23 public void run() {
24 for (int i = 0; i <= 100; i++) {
25 if (i % 2 != 0) {
26 System.out.println(Thread.currentThread().getName() + " : " + i);
27 }
28 }
29 }
30 }
2、通过实现Runnable接口的方式创建多线程
1 package com.baozi.test; 2 3 public class ThreadRunnable { 4 public static void main(String[] args) { 5 MyThread1 mt1 = new MyThread1(); 6 Thread t1 = new Thread(mt1); 7 t1.start(); 8 } 9 } 10 class MyThread1 implements Runnable { 11 @Override 12 public void run() { 13 for (int i = 0; i < 100; i++) { 14 if (i % 2 == 0) { 15 System.out.println(Thread.currentThread().getName() + " : " + i); 16 } 17 } 18 } 19 }
3、两种方式的比较:
- 实现Runnable接口的方式没有类的单继承性的限制性;
- 实现的方式更适合处理多个线程之间有共享数据的情况;
所以在开发中会优先选择实现Runnable接口的方式实现多线程