Java Puzzles

Puzzle# 1:

public class Oddity {
    public static boolean isOdd(int i) {
        return i % 2 == 1;
    }

    public static void main(String[] args) {

    }
}

Puzzle# 2:

public class Change {
    public static void main(String args[]) {
        System.out.println(2.00 - 1.10);
    }
}

Puzzle# 3:

public class LongDivision {
    public static void main(String[] args) {
        final long MICROS_PER_DAY = 24 * 60 * 60 * 1000 * 1000;
        final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000;

        System.out.println(MICROS_PER_DAY / MILLIS_PER_DAY);
    }
}

For more exciting puzzles and descriptive insight please see Java Puzzler book by Joshua Bloch and Neal Gafter

Puzzle types:

• Expressive Puzzlers
• Puzzlers with character
• Loopy puzzlers
• Exceptional puzzlers
• Classy puzzlers
• Library puzzlers
• Classier puzzlers
• Library puzzlers
• Advanced puzzlers