Skip to content
Related Articles

Related Articles

Improve Article

Java Math log() method with example

  • Difficulty Level : Easy
  • Last Updated : 23 Mar, 2018

The java.lang.Math.log() method returns the natural logarithm (base e) of a double value as a parameter. There are various cases :

  • If the argument is NaN or less than zero, then the result is NaN.
  • If the argument is positive infinity, then the result is positive infinity.
  • If the argument is positive zero or negative zero, then the result is negative infinity.

Syntax :

public static double log(double a)

Parameter :

a : User input

Return :

This method returns the value ln a.

Example :To show working of java.lang.Math.log() method.

// Java program to demonstrate working
// of java.lang.Math.log() method
import java.lang.Math;
class Gfg {
    // driver code
    public static void main(String args[])
        double a = -2.55;
        double b = 1.0 / 0;
        double c = 0, d = 145.256;
        // negative integer as argument, output NAN
        // positive infinity as argument, output Infinity
        // positive zero as argument, output -Infinity
        // positive double as argument

Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

My Personal Notes arrow_drop_up
Recommended Articles
Page :