Java - Integer signum() method

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Description

The Java Integer signum() method returns the signum function of the specified int value.

Declaration

Following is the declaration for java.lang.Integer.signum() method

public static int signum(int i)

Parameters

i − This is the int value.

Return Value

This method returns the signum function of the specified int value.It is -1 if the specified value is negative, 0 if the specified value is zero and 1 if the specified value is positive.

Exception

NA

Example 1

The following example shows the usage of Integer signum() method to get the signum function of the specified int value. We've created a int variable and assigned it a positive int value. Then using signum() method, we're printing the result.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      int i = 170;
      System.out.println("Number = " + i);
    
      /* returns the signum function of the given number */
      System.out.println("signum = " + Integer.signum(i));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Number = 170
signum = 1

Example 2

The following example shows the usage of Integer signum() method to get the signum function of the specified int value. We've created a int variable and assigned it a negative int value. Then using signum() method, we're printing the result.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      int i = -170;
      System.out.println("Number = " + i);
    
      /* returns the signum function of the given number */
      System.out.println("signum = " + Integer.signum(i));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Number = -170
signum = -1

Example 3

The following example shows the usage of Integer signum() method to get the signum function of the specified int value. We've created a int variable and assigned it a zero value. Then using signum() method, we're printing the result.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      int i = 0;
      System.out.println("Number = " + i);
    
      /* returns the signum function of the given number */
      System.out.println("signum = " + Integer.signum(i));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Number = 0
signum = 0