Using abs () method in java. My compiler doesn't know the method

Question

I have a simple question, but i can't find a solution for it.

I want to use abs() method, but it doesn't work. I'm always getting the error

Cannot find symbol: method abs(int)

I have already tried to use the method by including "import java.math" above the code. But that doens't work too.

Answer 1

Call it as

Math.abs(number)

or import as:

import static java.lang.Math.abs;

Answer 2

All functions in Java are part of a class. abs() is a static member of the Math class, so call

 Math.abs(val);

It's in java.lang, so no need to import anything

Answer 3

It's a static method. It has to be used like this:

Math.abs(int);

javadoc

See Class Methods in the Java Tutorial.

Answer 4

You have to refer to the Math class when you use it:

Math.abs(<intval>)

Answer 5

Or

import static java.lang.Math.*;

Answer 6

First of all, it's java.lang.Math (your package was wrong and Math is capitalized) but that's not a problem since all classes in java.lang are automatically imported.

As Brian says, use Math.abs(). Or, you can import the methods statically:

import static java.lang.Math.*;

This will allow you to use just abs() (and all other static methods from the Math class) without prefixing them with Math.