# Java.lang.Math.log10() Method

## Description

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.

## Declaration

Following is the declaration for java.lang.Math.log10() method

```public static double log10(double a)
```

a − a value

## Return Value

This method returns the base 10 logarithm of a.

NA

## Example

The following example shows the usage of lang.Math.log10() method.

```package com.tutorialspoint;

import java.lang.*;

public class MathDemo {

public static void main(String[] args) {

// get two double numbers
double x = 60984.1;
double y = 1000;

// 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));
}
}
```

Let us compile and run the above program, this will produce the following result −

```Math.log10(60984.1)=4.78521661890635
Math.log10(1000)=3.0
```
java_lang_math.htm