java线程

总体概览一下，写的很好：https://blog.csdn.net/u011163372/article/details/73995897

1、继承Thread类创建线程

package com.thre;

public class TestThread {
	public static void main(String[] args) {
		ThreadA a1 = new ThreadA();
		ThreadA a2 = new ThreadA();
		
		a1.start();
		a2.start();
	}
}


class ThreadA extends Thread{
	@Override
	public void run() {
		System.out.println("run...");
	}
}

2、实现Runnable接口创建线程

package com.thre;

public class TestThread {
	public static void main(String[] args) {
		Thread  a1 = new Thread(new RunA());
		Thread  a2 = new Thread(new RunA());
		
		a1.start();
		a2.start();
	}
}


class RunA implements Runnable{
	@Override
	public void run() {
		System.out.println("run...");
	}
}

3、使用Executors、Callable、Future实现有返回结果的线程，

可返回值的任务必须实现Callable接口。无返回值的任务必须实现Runnable接口。

https://blog.csdn.net/the_fool_/article/details/79869046