创建线程的3种方式

Thread：继承Thread类，可以直接使用this关键字，不能继承其他类；

runnable：可以继承其他类，多个线程共享一个target，必须使用Thread.currentThread().getName()获取当前线程名称，推荐使用这种；

callable：跟runnable差不多，不过他可以有返回值跟抛出异常；

继承Thread类

package com.jspjs.test.thread;public class CreateByThread extends Thread {private int i;public void run(){for(;i<10;i++){System.out.println(getName()+"|"+i);}}/** * @param args */public static void main(String[] args) {for(int i =0;i<1000;i++){System.out.println(i);if(i==10){new CreateByThread().start();new CreateByThread().start();}}}}

实现Runnable接口

package com.jspjs.test.thread;public class CreateByRunnable implements Runnable {private int i;@Overridepublic void run() {for(;i<10;i++){System.out.println(Thread.currentThread().getName()+"|"+i);}}/** * @param args */public static void main(String[] args) {CreateByRunnable runnable=new CreateByRunnable();new Thread(runnable,"子线程1").start();new Thread(runnable,"子线程2").start();}}

实现Callable接口

package com.jspjs.test.thread;import java.util.concurrent.Callable;import java.util.concurrent.FutureTask;public class CreateByCallable implements Callable<Integer> {@Overridepublic Integer call() throws Exception {Integer i=0;for(;i<10;i++){System.out.println(Thread.currentThread().getName()+"|"+i);}return i;}/** * @param args */public static void main(String[] args) {CreateByCallable callable=new CreateByCallable();FutureTask<Integer> task=new FutureTask<Integer>(callable);new Thread(task,"线程1").start();try {System.out.println("子线程的返回值："+task.get());} catch (Exception e) {e.printStackTrace();}}}