If you look inside Math.abs you can probably find the best answer:
Eg, for floats:
/*
* Returns the absolute value of a {@code float} 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:
* <ul><li>If the argument is positive zero or negative zero, the
* result is positive zero.
* <li>If the argument is infinite, the result is positive infinity.
* <li>If the argument is NaN, the result is NaN.</ul>
* In other words, the result is the same as the value of the expression:
* <p>{@code Float.intBitsToFloat(0x7fffffff & Float.floatToIntBits(a))}
*
* @param a the argument whose absolute value is to be determined
* @return the absolute value of the argument.
*/
public static float abs(float a) {
return (a <= 0.0F) ? 0.0F - a : a;
}
Top answer 1 of 10
63
If you look inside Math.abs you can probably find the best answer:
Eg, for floats:
/*
* Returns the absolute value of a {@code float} 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:
* <ul><li>If the argument is positive zero or negative zero, the
* result is positive zero.
* <li>If the argument is infinite, the result is positive infinity.
* <li>If the argument is NaN, the result is NaN.</ul>
* In other words, the result is the same as the value of the expression:
* <p>{@code Float.intBitsToFloat(0x7fffffff & Float.floatToIntBits(a))}
*
* @param a the argument whose absolute value is to be determined
* @return the absolute value of the argument.
*/
public static float abs(float a) {
return (a <= 0.0F) ? 0.0F - a : a;
}
2 of 10
20
Yes:
abs_number = (number < 0) ? -number : number;
For integers, this works fine (except for Integer.MIN_VALUE, whose absolute value cannot be represented as an int).
For floating-point numbers, things are more subtle. For example, this method -- and all other methods posted thus far -- won't handle the negative zero correctly.
To avoid having to deal with such subtleties yourself, my advice would be to stick to Math.abs().
Reddit
reddit.com › r/javahelp › absolute value without calling the math.abs() method?
r/javahelp on Reddit: Absolute value without calling the Math.abs() method?
December 25, 2015 -
We have a little project where we are supposed to program absolute value without math.abs method. The question goes like this: "Suppose x and y are variables of type double. Write a program that reads in x and then sets y to the absolute value of x without calling the Math.abs() method."
Can someone help me with the code? What do you even code to accomplish this? Thank you in advance!!
Top answer 1 of 3
6
I think you can probably figure this one out just with a hint.
What happens to negative numbers when they are multiplied by -1?
Note that you can check if numbers are less than zero using if and then do something about less than zero numbers.
If you still get stuck after thinking on that for a few minutes shoot me a pm.
Edit: as long as you don't ask me to just write out all the code for you.
2 of 3
2
You could just see if the number is less than 0 and then multiply it by -1
Setting an absolute value in Java
Hey everyone, I have a question that I’ve had for quite a while that no one seems to know the answer too. I’m a semi-new programmer for my team, I’ve been coding for them for about a year or so. I recently took charge of the programming subteam and have switched the team over to Java ... More on chiefdelphi.com
0
0
April 8, 2020Why Math.abs() doesn't work on values that are the MIN_VALUE of the data type?
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July 5, 2022Absolute value without calling the Math.abs() method?
I think you can probably figure this one out just with a hint.
What happens to negative numbers when they are multiplied by -1?
Note that you can check if numbers are less than zero using if and then do something about less than zero numbers.
If you still get stuck after thinking on that for a few minutes shoot me a pm.
Edit: as long as you don't ask me to just write out all the code for you.
More on reddit.com 7
1
December 25, 2015Should I be using Math.abs?
I'm pretty new to java myself, but doesn't Math.abs return the absolute value, so it returns negative numbers as positive? I'd have gone with else if (18 < age > 24) More on reddit.com
4
1
July 25, 2015Videos
02:55
Java Absolute Value: Method & Examples - Video | Study.com
06:17
Java Tutorial - 13 - Absolute Value of Numbers - YouTube
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Java Tutorial Finding Absolute Value - YouTube
Java Math.abs - YouTube
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Math Absolute Value Method (abs) - Java Tutorials - Chroniva - YouTube
Learn the Java Math.abs() Function in 5 Minutes - YouTube
Javatpoint
javatpoint.com › java-absolute-value
Java Absolute Value - Javatpoint
January 11, 2022 - Java Absolute Value with oops, string, exceptions, multithreading, collections, jdbc, rmi, fundamentals, programs, swing, javafx, io streams, networking, sockets, classes, objects etc,
W3Schools
w3schools.com › java › ref_math_abs.asp
Java Math abs() Method
Java Examples Java Videos Java Compiler Java Exercises Java Quiz Java Code Challenges Java Server Java Syllabus Java Study Plan Java Interview Q&A Java Certificate · ❮ Math Methods · Return the absolute (positive) value of different numbers: System.out.println(Math.abs(-4.7)); System.out.println(Math.abs(4.7)); System.out.println(Math.abs(3)); Try it Yourself » ·
Linux Hint
linuxhint.com › absolute-value-java-2
How to calculate the absolute value in Java
July 18, 2024 - Linux Hint LLC, [email protected] 1210 Kelly Park Circle, Morgan Hill, CA 95037 Privacy Policy and Terms of Use
iO Flood
ioflood.com › blog › java-absolute-value
The Multiple Methods to Find Absolute Value in Java
February 29, 2024 - We’ll cover everything from the basic usage of Math.abs() function to handling edge cases and alternative approaches. Let’s get started and master the absolute value in Java!
Tutorialspoint
tutorialspoint.com › home › java › java number abs method
Java Number abs Method
December 13, 2023 - Java Vs. C++ ... The method gives the absolute value of the argument. The argument can be int, float, long, double, short, byte. ... Any primitive data type. This method Returns the absolute value of the argument. public class Test { public static void main(String args[]) { Integer a = -8; double d = -100; float f = -90; System.out.println(Math.abs(a)); System.out.println(Math.abs(d)); System.out.println(Math.abs(f)); } }
GeeksforGeeks
geeksforgeeks.org › java › java-math-abs-method-examples
Java Math abs() method with Examples - GeeksforGeeks
July 11, 2025 - 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.
Chief Delphi
chiefdelphi.com › technical › java
Setting an absolute value in Java - Java - Chief Delphi
April 8, 2020 - Hey everyone, I have a question that I’ve had for quite a while that no one seems to know the answer too. I’m a semi-new programmer for my team, I’ve been coding for them for about a year or so. I recently took charge of the programming subteam and have switched the team over to Java from C++. Now recently I was reprogramming our robot from Arial Assist and realized I have no idea how to set an absolute value in Java!
Educative
educative.io › answers › finding-the-absolute-value-in-java
Finding the absolute value in Java
2 weeks ago - The absolute value can be found in Java using the abs() function.
Codecademy
codecademy.com › docs › java › math methods › .abs()
Java | Math Methods | .abs() | Codecademy
August 24, 2022 - The Math.abs() method returns the absolute value of the argument. ... Looking for an introduction to the theory behind programming? Master Python while learning data structures, algorithms, and more! ... Learn to code in Java — a robust programming language used to create software, web and mobile apps, and more. Beginner Friendly.Beginner Friendly17 hours17 hours ... Absolute values are the non-negative versions of the value without ...
Scaler
scaler.com › home › topics › abs() in java
abs() in Java - Scaler Topics
May 5, 2024 - The answer is the absolute value of the Integer.
Turing
turing.com › kb › java-absolute-value
Java Math Absolute Value Abs() Method
In many programming languages, knowing a number's absolute value is a common task. In Java, the abs() function provided by the Math class simplifies this task by allowing us to easily obtain the positive size of a given number.
Oracle
docs.oracle.com › javase › 8 › docs › api › java › lang › Math.html
Math (Java Platform SE 8 )
October 20, 2025 - The result of tanh for any finite input must have an absolute value less than or equal to 1. Note that once the exact result of tanh is within 1/2 of an ulp of the limit value of ±1, correctly signed ±1.0 should be returned. ... The hyperbolic tangent of x. ... Returns sqrt(x2 +y2) without ...
How to do in Java
howtodoinjava.com › home › java basics › java math.abs() and math.absexact() with examples
Java Math.abs() and Math.absExact() with Examples
March 28, 2025 - Two important methods within this ... problems of abs() method and how to absExact() solve them. The absolute value of a real number, often denoted by |x|, is the non-negative value of x without regard to its sign....
Oreate AI
oreateai.com › blog › javas-absolute-value-beyond-just-mathabs › 74a5152ed6b7edea25d6bd62c2e06b1c
Java's Absolute Value: Beyond Just Math.abs() - Oreate AI Blog
February 29, 2024 - Think about calculating distances on a map, or figuring out how far a stock price has moved from its average. That's where the concept of absolute value comes in, and in Java, the Math.abs() function is usually our go-to tool.
Upgrad
upgrad.com › home › tutorials › software & tech › implementing and manipulating abs in java
Java Math abs() Method with Examples
March 6, 2025 - Unlike manual checks, Math.abs() offers a cleaner, more efficient way to handle negative values. This tutorial explores the abs in Java, its syntax, supported data types, practical use cases, and best practices for optimal performance in Java applications. ... Software Development courses — take the next step in your learning journey! ... Java, the absolute value of a number is its magnitude, meaning negative numbers become positive, while positive numbers remain unchanged.
Naukri
naukri.com › code360 › library › mathabs-method-in-java
Math.abs()Method in Java - Naukri Code 360
March 6, 2025 - Almost there... just a few more seconds
Lasting Dynamics
lastingdynamics.com › home › build a software › java absolute value: powerful solutions for 2025
Java Absolute Value: Powerful Solutions for 2025
October 10, 2025 - The Java absolute value function, accessible through the versatile Math.abs() method, is a staple in the toolkit of every developer seeking to build resilient and accurate systems.
Oracle
docs.oracle.com › javase › 6 › docs › api › java › lang › Math.html
Math (Java Platform SE 6)
This method is properly synchronized to allow correct use by more than one thread. However, if many threads need to generate pseudorandom numbers at a great rate, it may reduce contention for each thread to have its own pseudorandom-number generator. ... Returns the absolute value of an int value.