In this Java program, you’ll learn how to Calculate the Power of a Number using the Java programming language.
How to Calculate the Power of a Number?
Example 1: using for loop
RUN CODE SNIPPETJava
x
12
1
class Main { 2
public static void main(String[] args) 3
{ 4
int base = 5, exponent = 2; 5
long result = 1; 6
for (; exponent != 0; --exponent) 7
{ 8
result *= base; 9
} 10
System.out.println("Answer = " + result); 11
} 12
}OUTPUT
Answer = 25
Example 2:
RUN CODE SNIPPETJava
xxxxxxxxxx1
1
class Main { 2
public static void main(String[] args) 3
{ 4
int base = 2, exponent = -4; 5
double result = Math.pow(base, exponent); 6
System.out.println("Answer = " + result); 7
} 8
}OUTPUT
Answer = 0.0625
Example 3: using recursion
RUN CODE SNIPPETC#
xxxxxxxxxx1
21
1
import java.util.Scanner; 2
public class Main 3
{ 4
static int power(int b, int e) 5
{ 6
if (e == 0) 7
return 1; 8
else 9
return b * power(b, e - 1); 10
} 11
public static void main(String args[]) 12
{ 13
int b, e; 14
Scanner sc=new Scanner(System.in); 15
System.out.print("Enter the base: "); 16
b=sc.nextInt(); 17
System.out.print("Enter the exponent: "); 18
e=sc.nextInt(); 19
System.out.println(b +" to the power " +e + " is: "+power(b, e)); 20
} 21
}OUTPUT
Enter the base: 3 Enter the exponent: 5 3 to the power 5 is: 243
