Java if-if-else behavior

Question

I wrote a simple if/else in my code which worked fine. Later I added another level of if under the first, and was baffled by its behavior. Here\'

Answer 1

public static void main(String[] args) {
    boolean a = true;
    boolean b = false;

    if (a && b)
        System.out.println("a=true, b=true");
    else if (!a)
        System.out.println("a=false");
}