public class ThreadTest extends Thread {
	
	int counter = 0;
	
	int increment;
	
	String name;
	
	private void printCounter() {
		System.out.println(name + ": " + counter);
	}
	
	private void increaseCounter() {
		counter += increment;
	}
	
	@Override
	public void run() {
		while (true) {
			printCounter();
			increaseCounter();
			try {
				Thread.sleep(1000);
			}
			catch(Exception e) {
			}
		}
	}
	
	public ThreadTest(String name, int inc) {
		this.name = name;
		this.increment = inc;
	}
	
	public static void main(String[] args) throws Exception {
		Thread a = new ThreadTest("A", 1);
		Thread b = new ThreadTest("B", 5);
		
		a.start();
		Thread.sleep(500);
		b.start();
	}
}