java线程的创建有两种方式，这里我们通过简单的实例来学习一下。

java中多线程的创建

一、通过继承Thread类来创建多线程

public class HelloThread extends Thread {
    @Override
    public void run() {
        try {
            TimeUnit.SECONDS.sleep(1);
            System.out.println("Hello from a thread!");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) throws InterruptedException {
        HelloThread helloThread = new HelloThread();
        helloThread.start();
        System.out.println("In main thread.");
    }
}

运行的结果如下：

In main thread.
Hello from a thread!

二、通过实现Runnable接口来创建多线程

public class HelloRunnable implements Runnable {

    @Override
    public void run() {
        try {
            System.out.println("Hello from a thread!");
            TimeUnit.SECONDS.sleep(1);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        Thread thread = new Thread(new HelloRunnable());
        thread.start();
        System.out.println("In main method.");
    }
}

运行的结果如下：

In main method.
Hello from a thread!

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