Java Integer signum() Method

Last Updated : 17 Mar 2025

The signum() method of Java Integer class returns the signum function of the specified int value in the method argument. The signum function can be computed as:

-1, if the specified number is negative.
0, if the specified number is zero.
1, if the specified number is positive.

Syntax:

Following is the declaration of signum() method:

Parameter:

DataType	Parameter	Description	Required/Optional
int	i	Integer value whose signum is to be computed.	Required

Returns:

The signum() method returns the signum function of the specified int value in the method argument.

Exceptions:

Compatibility Version:

Java 1.5 and above

Example 1

public class IntegerSignumExample1 {
	public static void main(String[] args) {
	    System.out.println("Result: "+Integer.signum(8));
	    System.out.println("Result: "+Integer.signum(-50));
	    System.out.println("Result: "+Integer.signum(0));
	}
}

Output:

Result: 1
Result: -1
Result: 0

Example 2

import java.util.Scanner;
public class IntegerSignumExample2 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.print("Enter Positive Value: ");
		int a = sc.nextInt();
		int Result1 = Integer.signum(a);
		System.out.print("Result: "+Result1);	    
		System.out.print("\nEnter Negative Value: ");
		int b = sc.nextInt();
		int Result2 = Integer.signum(b);
		System.out.print("Result: "+Result2);		
		System.out.print("\nEnter Zero Value: ");
		int c = sc.nextInt();		
		int Result3 = Integer.signum(c);		
	      System.out.print("Result: "+Result3);
	      sc.close();
	}
}

Output:

Enter Positive Value: 4565
Result: 1
Enter Negative Value: -432
Result: -1
Enter Zero Value: 000
Result: 0

Example 3

public class IntegerSignumExample3 {
	public static void main(String[] args) {
	   double nan = Double.NaN;
        // Here argument is NaN, output will be NaN
        double result1 = Math.signum(nan);
        System.out.println("Output: "+result1);
        // Here argument is positive zero
        double result2 = Math.signum(0);
        System.out.println("Output: "+result2); 
        // Here argument is negative zero
        double result3 = Math.signum(-0);
        System.out.println("Output: "+result3);
	}
}

Output:

Output: NaN
Output: 0.0
Output: 0.0

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Java Integer signum() Method

Syntax:

Parameter:

Returns:

Exceptions:

Compatibility Version:

Example 1

Example 2

Example 3

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Java Integer signum() Method

Syntax:

Parameter:

Returns:

Exceptions:

Compatibility Version:

Example 1

Example 2

Example 3

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