Java Integersignum Examples
In this tutorial, we will learn about Java Integer.signum() method, and learn how to use this method to find the value of signum function for a given integer, with the help of examples.
signumint i
Integer.signum(i) returns the signum function of the specified int value i.
Syntax
The syntax of signum() method with integer value as parameter is
Integer.signum(int i)
where
| Parameter | Description |
|---|---|
| i | The integer value whose signum has to be found. |
Returns
The method returns value of type int.
Example 1 signumi i is Positive
In this example, we will take a positive integer and find the signum function of this integer using Integer.signum() method. Since we passed a positive integer as argument, signum() returns 1.
Java Program
public class Example {
public static void main(String[] args){
int i = 4;
int result = Integer.signum(i);
System.out.println("Result of signum("+i+") = " + result);
}
}
Output
Result of signum(4) = 1
Example 2 signumi i is Zero
In this example, we will find the signum function of zero using Integer.signum() method. signum() should return zero for returns for input zero.
Java Program
public class Example {
public static void main(String[] args){
int i = 0;
int result = Integer.signum(i);
System.out.println("Result of signum("+i+") = " + result);
}
}
Output
Result of signum(0) = 0
Example 3 signumi i is Negative
In this example, we will take a negative integer and find the signum function of this integer using Integer.signum() method. Since we passed a negative integer as argument, signum() returns -1.
Java Program
public class Example {
public static void main(String[] args){
int i = -5;
int result = Integer.signum(i);
System.out.println("Result of signum("+i+") = " + result);
}
}
Output
Result of signum(-5) = -1
Conclusion
In this Java Tutorial, we have learnt the syntax of Java Integer.signum() method, and also how to use this method with the help of Java example programs.