两个线程我们可以创建，而多个线程是否要也可以呢，今天IT培训网小编就来给大家介绍下Java创建多线程的方法。

到目前为止，我们仅用到两个线程：主线程和一个子线程。然而，你的程序可以创建所需的更多线程。例如，下面的程序创建了三个子线程：

// Create multiple threads.

class NewThread implements Runnable {

    String name; // name of thread

    Thread t;

    NewThread(String threadname) {

        name = threadname;

        t = new Thread(this, name);

        System.out.println("New thread: " + t);

        t.start(); // Start the thread

    }

    // This is the entry point for thread.

    public void run() {

        try {

            for(int i = 5; i > 0; i--) {

               System.out.println(name + ": " + i);

               Thread.sleep(1000);

            }

        } catch (InterruptedException e) {

            System.out.println(name + "Interrupted");

        }

        System.out.println(name + " exiting.");

    }

}

class MultiThreadDemo {

    public static void main(String args[]) {

        new NewThread("One"); // start threads

        new NewThread("Two");

        new NewThread("Three");

        try {

            // wait for other threads to end

            Thread.sleep(10000);

        } catch (InterruptedException e) {

            System.out.println("Main thread Interrupted");

        }

        System.out.println("Main thread exiting.");

    }

}

程序输出如下所示：

New thread: Thread[One,5,main]

New thread: Thread[Two,5,main]

New thread: Thread[Three,5,main]

One: 5

Two: 5

Three: 5

One: 4

Two: 4

Three: 4

One: 3

Three: 3

Two: 3

One: 2

Three: 2

Two: 2

One: 1

Three: 1

Two: 1

One exiting.

Two exiting.

Three exiting.

Main thread exiting.

如你所见，一旦启动，所有三个子线程共享CPU。注意main()中对sleep(10000)的调用。这使主线程沉睡十秒确保它最后结束。

Java的用途十分广泛，学会了，找工作不用愁；学精了，拿高薪不用愁，所以学习现在用心学Java就是为了以后方便，好了，努力学习吧！