Fibonacci Series ?

public class Main {

    public static void main(String args[]) {
        int n1 = 0, n2 = 1, n3, i, count = 20;
        System.out.print(n1 + " " + n2);//printing 0 and 1

        for (i = 2; i < count; ++i)//loop starts from 2 because 0 and 1 are already printed
        {
            n3 = n1 + n2;
            System.out.print(" " + n3);
            n1 = n2;
            n2 = n3;
        }
    }
}

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