Java log10() with example

The java.lang.Math.log10(double a) returns the base 10 logarithm of a double value. Special 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.

• If the argument is equal to 10n for integer n, then the result is n.

Example

Following is an example to implement the log10() method in Java −

import java.lang.*; public class MathDemo {    public static void main(String[] args) {       double x = 56567.5;       double y = 100;       // get the base 10 logarithm for x       System.out.println("Math.log10(" + x + ")=" + Math.log10(x));       // get the base 10 logarithm for y       System.out.println("Math.log10(" + y + ")=" + Math.log10(y));    } }

Output

Math.log10(56567.5)=4.752566985524987 Math.log10(100.0)=2.0

Let us see another example −

Example

import java.lang.*; public class MathDemo {    public static void main(String[] args) {       double x = -30;       double y = 1.0 / 0; ;       // get the base 10 logarithm for x       System.out.println("Math.log10(" + x + ")=" + Math.log10(x));       // get the base 10 logarithm for y       System.out.println("Math.log10(" + y + ")=" + Math.log10(y));    } }

Output

Math.log10(-30.0)=NaN Math.log10(Infinity)=Infinity