Example 1: Calculate power of a number using a while loop
public class Power { 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); } }
Output
Answer = 81
Example 2: Calculate the power of a number using a for loop
public class Power { 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); } }
Output
Answer = 81
Example 3: Calculate the power of a number using pow() function
public class Power { public static void main(String[] args) { int base = 3, exponent = -4; double result = Math.pow(base, exponent); System.out.println("Answer = " + result); } }
Output
Answer = 0.012345679012345678
