Finding power of number using java code

Write a java program to find power.(2^4=16)

Finding the pover of one number using another number.

//calculating the power of a given number

import java.io.*;

public class powerofnumber

{

            public static void main(String[]args) throws IOException

              { 

                int num,pow,base;

                BufferedReader br = new BufferedReader (new InputStreamReader (System.in));

                System.out.print("enter the base number:-");

                base = Integer.parseInt(br.readLine());

                System.out.print("enter the power:-");

                pow = Integer.parseInt(br.readLine());

                num = rec(base,pow);

                System.out.println("the number = "+num);

              }

                static int rec(int i,int j)

                {  

                        int r=1;

                        while(j>0)

                        {

                        r=r*i;  

                        j--;

                        }

                     return r;

                }

}