Java: Check the number is negative, zero, or positive

Last update on May 14 2025 13:00:58 (UTC/GMT +8 hours)

Check Negative, Zero, or Positive Integer

Write a Java program that reads an integer and check whether it is negative, zero, or positive.

Test Data
Input a number: 7

Pictorial Presentation:

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise27 {
 public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        System.out.print("Input a number: ");
        int n = in.nextInt();

        if (n > 0)
        {
            System.out.println("Number is positive");
        }
        else if (n < 0)
        {
            System.out.println("Number is negative");
        }
        else
        {
            System.out.println("Number is zero");
        }
    }
}

Sample Output:

Input a number: 7                                                                                             
Number is positive

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to check whether an integer is negative, zero, or positive using only arithmetic operations.
• Write a Java program to evaluate a list of integers and count how many are negative, zero, or positive.
• Write a Java program to determine the sign of an integer using Math.signum() and print a custom message.
• Write a Java program to classify an integer as negative, zero, or positive without using conditional statements.

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