Calculate Powers of Integers in Java

If you’ll want to calculate the powers of Integers in Java, then you are able to do one of many following:

Possibility 1 – Utilizing for loops

public class Energy {
    public static void major(String args[]){
        int quantity = 5;
        int energy = 3;
        int consequence = calculatePower(quantity,energy);
        System.out.println(quantity+"^"+energy+"="+consequence);
    }
    static int calculatePower(int num, int energy){
        int reply = 1;
        if (num > 0 && energy==0){
            return reply;
        } else if(num == 0 && energy>=1){
            return 0;
        } else{
            for(int i = 1; i<= energy; i++)
                reply = reply*num;
            return reply;
        }
    }
}

Possibility 2 – Utilizing Recursion

public class Energy {
    public static void major(String args[]){
        int quantity = 3;
        int energy = 3;
        int consequence = CalculatePower(quantity,energy);
        System.out.println(quantity+"^"+energy+"="+consequence);
    }
    static int CalculatePower (int num, int pow){
        if (pow == 0)
            return 1;
        else
            return num * CalculatePower(num, pow - 1);
    }
}

Possibility 3 – Utilizing Math.pow()

import java.lang.Math;
public class Energy {
    public static void major(String args[]){
        int quantity = 6;
        int energy = 3;
        double consequence = CalculatePower(quantity,energy);
        System.out.println(quantity+"^"+energy+"="+consequence);
    }
    static double CalculatePower (int num, int pow){
        return Math.pow(num,pow);
    }
}