What will the program output when comparing Integer objects with the == operator

Determine what result will be printed to the console when the following code is run:

public class Test2 {
    public static void main(String[] args) {
        Integer a = 100;
        Integer b = 100;

        Integer c = 200;
        Integer d = 200;

        System.out.println("a == b: " + (a == b));
        System.out.println("c == d: " + (c == d));
    }
}