Checking the number is Power of 2

Power2.java

/**
 * Created by Daehee Han(@daniel_booknara) on 4/21/16.
 */
public class Power2 {
    public static void main(String[] args) {
        for (int i = 1; i < 10; i++) {
            if (isPower2(i))
                System.out.println(i + " is power of 2");
            else
                System.out.println(i + " is NOT power of 2");

            if (isEnhancedPower2(i))
                System.out.println(i + " is power of 2");
            else
                System.out.println(i + " is NOT power of 2");

            if (isEnhanced2Power2(i))
                System.out.println(i + " is power of 2");
            else
                System.out.println(i + " is NOT power of 2");

        }
    }

    public static boolean isPower2(int value) {
        while (value != 1) {
            if (value % 2 != 0)
                return false;

            value = value / 2;
        }

        return true;
    }

    public static boolean isEnhancedPower2(int value) {
        return ((value & -value) == value);
    }

    public static boolean isEnhanced2Power2(int value) {
        return ((value & value - 1) == 0);
    }
}