JuniorTheoryCommon

What does the program print?

JAVA

public class Main {
    public static void main(String[] args) {
        int d = 2;
        switch (d) {
            case 1: System.out.print("a");
            case 2: System.out.print("b");
            case 3: System.out.print("c");
                break;
            default: System.out.print("d");
        }
    }
}

Expecting b: a case with a colon does not end on its own; without break execution falls into case 3 without checking its value.
Expecting abc or bcd: switch starts at the matching case, not at the top, and the break after c ends it before default.

How would you make d = 2 print only b?
When is falling through to the next case useful on purpose?

Back to questions Open topic in roadmap →Answer it yourself — Quiz

Back to questions

JuniorTheoryCommon

What does the program print?

JAVA

public class Main {
    public static void main(String[] args) {
        int d = 2;
        switch (d) {
            case 1: System.out.print("a");
            case 2: System.out.print("b");
            case 3: System.out.print("c");
                break;
            default: System.out.print("d");
        }
    }
}

Expecting b: a case with a colon does not end on its own; without break execution falls into case 3 without checking its value.
Expecting abc or bcd: switch starts at the matching case, not at the top, and the break after c ends it before default.

How would you make d = 2 print only b?
When is falling through to the next case useful on purpose?

Back to questions Open topic in roadmap →Answer it yourself — Quiz