**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 :**