Java log10() Method 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