# Java Math abs()

The `abs()` method returns the absolute value of the specified value.

### Example

``````class Main {
public static void main(String[] args) {

// print the absolute value
System.out.println(Math.abs(-7.89));

}
}``````

## Syntax of Math.abs()

The syntax of the `abs()` method is:

``Math.abs(num)``

Here, `abs()` is a static method. Hence, we are accessing the method using the class name, `Math`.

## abs() Parameters

The `abs()` method takes a single parameter.

• num - number whose absolute value is to be returned. The number can be:
• `int`
• `double`
• `float`
• `long`

Note: To learn more about `int`, `double`, `float`, and `long`, visit Java Data Types(Primitive).

## abs() Return Value

• returns the absolute value of the specified number
• returns the positive value if the specified number is negative

## Example 1: Java Math abs() with Positive Numbers

``````class Main {
public static void main(String[] args) {

// create variables
int a = 7;
long b = -23333343;
double c = 9.6777777;
float d = -9.9f;

// print the absolute value
System.out.println(Math.abs(a));  // 7
System.out.println(Math.abs(c));  // 9.6777777

// print the value without negative sign
System.out.println(Math.abs(b));  // 23333343
System.out.println(Math.abs(d));  // 9.9
}
}``````

In the above example, we have imported the `java.lang.Math` package. This is important if we want to use methods of the `Math` class. Notice the expression,

``Math.abs(a)``

Here, we have directly used the class name to call the method. It is because `abs()` is a static method.

## Example 2: Java Math abs() with Negative Numbers

``````class Main {
public static void main(String[] args) {

// create variables
int a = -35;
long b = -141224423L;
double c = -9.6777777d;
float d = -7.7f;

// get the absolute value
System.out.println(Math.abs(a));  // 35
System.out.println(Math.abs(b));  // 141224423
System.out.println(Math.abs(c));  // 9.6777777
System.out.println(Math.abs(d));  // 7.7
}
}``````

Here, we can see that the `abs()` method converts the negative value into a positive value.