Algorithm

1. Start
2. Read the base (a) and exponent (b) from the user
3. Set result = 1
4. Repeat b times:
     4.1. Multiply result by the base
5. Display the result as the power of the number
6. End

Code Examples

#1 Code Example- Calculate power of a number using a while loop

Code - Java Programming

class Main {
  public static void main(String[] args) {

    int base = 3, exponent = 4;

    long result = 1;

    while (exponent != 0) {
      result *= base;
      --exponent;
    }

    System.out.println("Answer = " + result);
  }
}
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Output

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Answer = 81

#2 Code Example- Calculate the power of a number using a for loop

Code - Java Programming

class Main {
  public static void main(String[] args) {

    int base = 3, exponent = 4;

    long result = 1;

    for (; exponent != 0; --exponent) {
      result *= base;
    }

    System.out.println("Answer = " + result);
  }
}
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Output

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Answer = 81

#3 Code Example- Calculate the power of a number using pow() function

Code - Java Programming

class Main {
  public static void main(String[] args) {

    int base = 3, exponent = -4;
    double result = Math.pow(base, exponent);

    System.out.println("Answer = " + result);
  }
}
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Output

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Answer = 0.012345679012345678

#4 Code Example- Compute Power of Negative Number

Code - Java Programming

class Main {
  public static void main(String[] args) {

    // negative number
    int base = -3, exponent = 2;

    double result = Math.pow(base, exponent);
    System.out.println("Answer = " + result);
  }
}
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Output

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Answer = 9.0
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Demonstration

Java Programing Example to Calculate the Power of a Number-DevsEnv