Subnet masks in java

mask.java

public class Main {
    public static void main(String[] args) {
        int binary = 0x00;
        for (int i = 0; i <= 32; i++) {
            System.out.printf("%d.%d.%d.%d (/%d)%n", (binary >> 24) & 0xFF, (binary >> 16) & 0xFF, (binary >> 8) & 0xFF, binary & 0xFF, i);
            binary >>= 1;
            binary |= (1 << 31);
        }
    }
}