/*
From the James Gosling java book.
Like class String, class Thread does not need to be imported.  It is built into
the language.
*/


public class ThreadDemo {
	public static void main(String[] args) {
		MyThread mythread1 = new MyThread("hello", 3);
		mythread1.start();

		MyThread mythread2 = new MyThread("goodbye", 6);
		mythread2.start();
	}
}

class MyThread extends Thread {
	private String string;
	private int seconds;

	public MyThread(String string, int seconds) {
		this.string = string;
		this.seconds = seconds;
	}

	@Override
	public void run() {
		try {
			for (;;) {	//infinite loop
				System.out.println(string + " ");
				Thread.sleep(seconds * 1000);
			}
		}

		catch (InterruptedException e) {
			System.err.println(e);
			e.printStackTrace();
		}
	}
}