Code Execution and Behavior | Dataford Interview Questions

Your question is Code Execution and Behavior. Take a moment with it on the right.

Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).

Problem

BlackBerry's device-management backend team likes to open interviews with a short Java prediction exercise. Read the snippet exactly as written below.

public class DeviceCounter {
    static int counter = init();

    static int init() {
        return counter + 5;
    }

    public static void main(String[] args) {
        Integer a = 127;
        Integer b = 127;
        Integer c = 200;
        Integer d = 200;

        System.out.println(counter);
        System.out.println(a == b);
        System.out.println(c == d);
    }
}

What gets printed, in order, when main runs, and why? Explain your reasoning for each line rather than just stating the final output.

Your question is Code Execution and Behavior. Take a moment with it on the right.

Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).

BlackBerry's device-management backend team likes to open interviews with a short Java prediction exercise. Read the snippet exactly as written below.

public class DeviceCounter {
    static int counter = init();

    static int init() {
        return counter + 5;
    }

    public static void main(String[] args) {
        Integer a = 127;
        Integer b = 127;
        Integer c = 200;
        Integer d = 200;

        System.out.println(counter);
        System.out.println(a == b);
        System.out.println(c == d);
    }
}

What gets printed, in order, when main runs, and why? Explain your reasoning for each line rather than just stating the final output.