java.lang.Long signum(long i)


The Long.signum(long i) java method returns the signum function of the specified long value. (The return value is -1 if the specified value is negative; 0 if the specified value is zero; and 1 if the specified value is positive.)

Make a note that the signum() method of Long class is static thus it should be accessed statically which means the we would be calling this method in this format:

Long.signum(method args)

Non static method is usually called by just declaring method_name(argument) however in this case since the method is static, it should be called by appending the class name as suffix. We will be encountering a compilation problem if we call the java signum method non statically.

Method Syntax

public static int signum(long i)

Method Argument

Data Type Parameter Description
long i the value whose signum is to be computed

Method Returns

The signum(long i) method of Long class returns the signum function of the specified long value.


Requires Java 1.5 and up

Java Long signum(long i) Example

Below is a simple java example on the usage of signum(long i) method of Long class.

Sample Output

Below is the sample output when you run the above example.

Java Long signum(long i) example output

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