Java - Math abs(double) Method

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Description

The Java Math abs(double a) returns the absolute value of a double value. If the argument is not negative, the argument is returned. If the argument is negative, the negation of the argument is returned.Special cases −

• If the argument is positive zero or negative zero, the result is positive zero.
• If the argument is infinite, the result is positive infinity.
• If the argument is NaN, the result is NaN.

Declaration

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

public static double abs(double a)

Parameters

a − the argument whose absolute value is to be determined

Return Value

This method returns the absolute value of the argument.

Exception

NA

Getting Absolute Value of Positive Double Value Example

The following example shows the usage of Math abs() method to get absolute value of a positive double value.

package com.tutorialspoint;

public class MathDemo {

   public static void main(String[] args) {

      // get a double to find its absolute values
      double x = 4876.1874d;
   
      // get and print its absolute value
      System.out.println("Math.abs(" + x + ")=" + Math.abs(x));
   }
}

Output

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

Math.abs(4876.1874)=4876.1874

Getting Absolute Value of Zero Double Value Example

The following example shows the usage of Math abs() method to get absolute value of a zero double value.

package com.tutorialspoint;

public class MathDemo {

   public static void main(String[] args) {

      // get a double to find its absolute values
      double x = -0.0d;
   
      // get and print its absolute value
      System.out.println("Math.abs(" + x + ")=" + Math.abs(x));
   }
}

Output

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

Math.abs(-0.0)=0.0

Getting Absolute Value of Negative Double Value Example

The following example shows the usage of Math abs() method to get absolute value of a negative double value.

package com.tutorialspoint;

public class MathDemo {

   public static void main(String[] args) {

      // get a double to find its absolute values
      double x = -9999.555d;
   
      // get and print its absolute value
      System.out.println("Math.abs(" + x + ")=" + Math.abs(x));
   }
}

Output

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

Math.abs(-9999.555)=9999.555