JuniorTheoryCommon

What does the program print?

JAVA

public class Main {
    public static void main(String[] args) {
        Level level = Level.HIGH;
        System.out.println(level.ordinal() + " " + level);
    }
}
enum Level { LOW, MEDIUM, HIGH }

2 HIGH

Expecting 3 HIGH: ordinal() numbers the constants from zero, so the third one, HIGH, gives 2.
Expecting a number when the constant itself is printed: an enum constant prints its name, HIGH, the same text name() returns.

What does Level.values().length return for this enum?
Why is it risky to save ordinal() to a file as the code of a value?

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Back to questions

JuniorTheoryCommon

What does the program print?

JAVA

public class Main {
    public static void main(String[] args) {
        Level level = Level.HIGH;
        System.out.println(level.ordinal() + " " + level);
    }
}
enum Level { LOW, MEDIUM, HIGH }

2 HIGH

Expecting 3 HIGH: ordinal() numbers the constants from zero, so the third one, HIGH, gives 2.
Expecting a number when the constant itself is printed: an enum constant prints its name, HIGH, the same text name() returns.

What does Level.values().length return for this enum?
Why is it risky to save ordinal() to a file as the code of a value?

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