Java中线程的创建有两种方式：
1． 通过继承Thread类，重写Thread的run()方法，将线程运行的逻辑放在其中
2． 通过实现Runnable接口，实例化Thread类
一、通过继承Thread类实现多线程
class MyThread extends Thread{
String name = null;
int ticket = 0;
public MyThread(String name){
this.name = name;
}
public synchronized void run(){
for (int i = 0; i < 5; i++) {
System.out.println(Thread.currentThread().getName()+this.name+" ticket:"+ticket++);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
通过如下方式运行：
1 public static void main(String[] args) { 2 3 MyThread mThread1 = new MyThread("线程一"); 4 MyThread mThread2 = new MyThread("线程二"); 5 MyThread mThread3 = new MyThread("线程三"); 6 mThread1.start(); 7 mThread2.start(); 8 mThread3.start(); 9 }
运行结果如下：
1 Thread-1线程二 ticket:0 2 Thread-0线程一 ticket:0 3 Thread-2线程三 ticket:0 4 Thread-1线程二 ticket:1 5 Thread-0线程一 ticket:1 6 Thread-2线程三 ticket:1 7 Thread-1线程二 ticket:2 8 Thread-2线程三 ticket:2 9 Thread-0线程一 ticket:2 10 Thread-1线程二 ticket:3 11 Thread-2线程三 ticket:3 12 Thread-0线程一 ticket:3 13 Thread-1线程二 ticket:4 14 Thread-2线程三 ticket:4 15 Thread-0线程一 ticket:4
二、通过继承Runnable接口实现多线程
多线程类：
1 class RunThread implements Runnable{ 2 3 int Counter = 0; 4 @Override 5 public synchronized void run() { 6 for(int i=0;i<5;i++){ 7 System.out.println(Thread.currentThread().getName()+"count:"+Counter++); 8 try { 9 Thread.sleep(100); 10 } catch (InterruptedException e) { 11 // TODO Auto-generated catch block 12 e.printStackTrace(); 13 } 14 } 15 } 16 }
实现方式：
1 public static void main(String[] args) { 2 3 RunThread rThread = new RunThread(); 4 Thread t1 = new Thread(rThread,"线程一"); 5 Thread t2 = new Thread(rThread,"线程二"); 6 Thread t3 = new Thread(rThread,"线程三"); 7 t1.start(); 8 t2.start(); 9 t3.start(); 10 }
输出结果：
1 线程一count:0 2 线程一count:1 3 线程一count:2 4 线程一count:3 5 线程一count:4 6 线程二count:5 7 线程二count:6 8 线程二count:7 9 线程二count:8 10 线程二count:9 11 线程三count:10 12 线程三count:11 13 线程三count:12 14 线程三count:13 15 线程三count:14
