Java program to calculate power using recursion

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In this program, you will learn how to use recursive functions in Java to calculate the power of a number.

Example: Program to calculate power using recursion

public class Power {
　　　　public static void main(String[] args) {
　　　　　　　　int　base　=　3,　powerRaised　=　4;
　　　　　　　　int　result　=　power(base,　powerRaised);
　　　　　　　　System.out.printf("%d^%d = %d",　base,　powerRaised,　result);
　　　　}
　　　　public　static　int　power(int　base,　int　powerRaised)　{
　　　　　　　　if　(powerRaised　!=　0)
　　　　　　　　　　　　return　(base　*　power(base,　powerRaised　-　1));
　　　　　　　　else
　　　　　　　　　　　　return　1;
　　　　}
}

When the program is run, the output is:

3^4　=　81

In the above program, you use the recursive function power() to calculate the power.

Simply put, the recursive function multiplies the base with itself to obtain the number of times the power is raised, that is:

3　*　3　*　3　*　3　=　81

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