## Free Data Structures and Algorithms Course

### How to calculate natural and base 10 logarithm of a number through a Java program ?.

Program to demonstrate how to calculate natural and base 10 logarithm of a number in Java.

```package com.hubberspot.code;

import java.util.Scanner;

public class LogarithmCalculation {

public static void main(String[] args) {

// Create a Scanner object which will read
// values from the console which user enters
Scanner scanner = new Scanner(System.in);

// Getting input from user from the console
System.out.println("Enter value of number ");

// Calling nextDouble method of scanner for
// taking a double value from user and storing
// it in number variable
double number = scanner.nextDouble();

System.out.println();

System.out.println("Calculating base 10 logarithm of a number ... ");

// In order to calculate base 10 logarithm of a number
// we use Math class log10() static method which takes in a
// number and returns back the base 10 logarithm of a number
double result = Math.log10(number);

// printing the result on the console
System.out.println("Base 10 Logarithm of " + number + " is : " + result);

System.out.println();

System.out.println("Calculating Natural logarithm of a number ... ");

// In order to calculate natural logarithm of a number
// we use Math class log() static method which takes in a
// number and returns back the natural logarithm of a number
result = Math.log(number);

// printing the result on the console
System.out.println("Natural Logarithm of " + number + " is : " + result);

}

}

```

Output of the program :

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