Absolute value refers to the positive value corresponding to the number passed as in arguments. Now geek you must be wondering what exactly it means so by this it is referred no matter what be it positive or negative number been passed for computation, the computation will occur over the positive corresponding number in both cases. So in order to compute the absolute value for any number we do have a specified method in Java referred to as abs() present inside Math class present inside java.lang package.
The java.lang.Math.abs() returns the absolute value of a given argument.
- If the argument is not negative, the argument is returned.
- If the argument is negative, the negation of the argument is returned.
Syntax :
public static DataType abs(DataType a)
Parameters: Int, long, float, or double value whose absolute value is to be determined
Returns Type: This method returns the absolute value of the argument.
Exceptions Thrown: ArithmeticException
Tip: One must be aware of generic return type as follows:
- If the argument is of double or float type:
- 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.
- If the argument is of int or long type: If the argument is equal to the value of Integer.MIN_VALUE or Long.MIN_VALUE, the most negative representable int or long value, the result is that same value, which is negative.
Example 1:
Java
// Java Program to Illustrate Absolute Method// of Math Class// Importing all Math classes// from java.lang packageimport java.lang.Math;// Main classclass GFG { // Main driver method public static void main(String[] args) { // Custom integer input received from user int n = -7; // Printing value before applying absolute function System.out.println( "Without applying Math.abs() method : " + n); // Applying absolute math function and // storing it in integer variable int value = Math.abs(n); // Printing value after applying absolute function System.out.println( "With applying Math.abs() method : " + value); }} |
Without applying Math.abs() method : -7 With applying Math.abs() method : 7
Example 2:
Java
// Java Program to Demonstrate Working of abs() method// of Math class inside java.lang package// Importing Math class// from java.lang packageimport java.lang.Math;// Main classclass GFG { // Main driver method public static void main(String args[]) { // Customly declaring and initializing all // arguments that ans() function takes // Float float a = 123.0f; float b = -34.2323f; // Double double c = -0.0; double d = -999.3456; // Integer int e = -123; int f = -0; // Long long g = -12345678; long h = 98765433; // abs() method taking float type as input System.out.println(Math.abs(a)); System.out.println(Math.abs(b)); // abs() method taking double type as input System.out.println(Math.abs(1.0 / 0)); System.out.println(Math.abs(c)); System.out.println(Math.abs(d)); // abs() method taking int type as input System.out.println(Math.abs(e)); System.out.println(Math.abs(f)); System.out.println(Math.abs(Integer.MIN_VALUE)); // abs() method taking long type as input System.out.println(Math.abs(g)); System.out.println(Math.abs(h)); System.out.println(Math.abs(Long.MIN_VALUE)); }} |
123.0 34.2323 Infinity 0.0 999.3456 123 0 -2147483648 12345678 98765433 -9223372036854775808
