Finbonacci Sequence

public class FibonacciSequence {
    public static void main(String args[]) throws InterruptedException {
    int fib1 = 1, fib2 = 1;
    while (fib1 + fib2 < 1000){
    fib1 = fib1 + fib2;
    System.out.println(fib1);
        Thread.sleep(1000);
    fib2 = fib1 + fib2;
    System.out.println(fib2);
        Thread.sleep(1000);
    }
    }
}