Java Algorithms How to - Calculate powers

Question

We would like to know how to calculate powers.

Answer

public class Main {
  public static void main(String args[]) {
    int num = 2;//from  w  w  w  .  j av a 2  s .  c  o  m
    int pow = 3;
    System.out.print(power(num, pow));
  }
  public static int power(int a, int b) {
    int power = 1;
    for (int c = 0; c < b; c++)
      power *= a;
    return power;
  }
}

The code above generates the following result.