线程

方式1:

package threadimp;

import java.util.Random;

public class MyThread extends Thread{

@Override
public void run() {
    String name = Thread.currentThread().getName();
    Random r = new Random();
    for (int i = 0; i < 10; i++) {
        try {
            Thread.sleep(r.nextInt(10) * 1000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println(name + "------" + i);
    }
}
public static void main(String[] args) {
    MyThread thread1 = new MyThread();
    MyThread thread2 = new MyThread();
    thread1.start();
    thread2.start();
    //如果只是调用thread的run方法。则只是一个普通的方法调用，不会有线程出来。
}   
}

方式2:

package threadimp;

import java.util.Random;

public class MyRunnableThread implements Runnable {

@Override
public void run() {
    // TODO Auto-generated method stub
    String name = Thread.currentThread().getName();
    Random r = new Random();
    for (int i = 0; i < 10; i++) {
        try {
            Thread.sleep(r.nextInt(10) * 1000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println(name + "--runnable----" + i);
    }
}
public static void main(String[] args) {
    Thread thread1 = new Thread(new MyRunnableThread());
    Thread thread2 = new Thread(new MyRunnableThread());
    thread1.start();
    thread2.start();
    //如果只是调用thread的run方法。则只是一个普通的方法调用，不会有线程出来。
}
}