Java Program to Count Negative Array Numbers

Write a Java Program to count Negative Array Numbers with an example. Or how to write a Java Program to count and return the negative values or items in a given array.

In this Java count negative array numbers example, we used while loop to iterate count_NegArr array and count negative items (a number less than zero) and prints the same.

package ArrayPrograms;

public class CountNegativeArrayItems {
	
	public static void main(String[] args) {
		int i = 0, count = 0;
		int[] count_NegArr = {-40, 15, -4, 11, -8, -13, 22, 16, -11, -99, 55, 18, -60};
		
		while(i < count_NegArr.length) 
		{
			if(count_NegArr[i] < 0) {
				count++;
			}
			i++;
		}
		System.out.println("\nThe Total Number of Negative Array Items = " + count);
	}
}

Java count negative numbers in an array output

The Total Number of Negative Array Items = 7

Java Program to Count Negative Array Numbers using For Loop

package ArrayPrograms;

import java.util.Scanner;

public class CountNegativeArrayItems1 {
	private static Scanner sc;
	
	public static void main(String[] args) {
		int Size, i, count = 0;
		int[] count_NegArr = new int[10];
		
		sc = new Scanner(System.in);
		
		System.out.print("\nPlease Enter the CNT NEG Array size  : ");
		Size = sc.nextInt();
		
		System.out.format("\nEnter CNT NEG Array %d elements : ", Size);
		for(i = 0; i < Size; i++) 
		{
			count_NegArr[i] = sc.nextInt();
		}
	
		for(i = 0; i < Size; i++) 
		{
			if(count_NegArr[i] < 0) {
				count++;
			}
		}
		System.out.println("\nThe Total Number of Negative Array Items = " + count);
	}
}

In this count negative array items Java example, we created a separate CountNegativeElement function to count and return negative array items.

package ArrayPrograms;

import java.util.Scanner;

public class CountNegativeArrayItems2 {
	private static Scanner sc;
	
	public static void main(String[] args) {
		int Size, i;
		
		sc = new Scanner(System.in);
		
		System.out.print("\nPlease Enter the CNT NEG Array size  : ");
		Size = sc.nextInt();

		int[] count_NegArr = new int[Size];
		System.out.format("\nEnter CNT NEG Array %d elements : ", Size);
		for(i = 0; i < Size; i++) 
		{
			count_NegArr[i] = sc.nextInt();
		}
	
		int count = CountNegativeElement(count_NegArr, Size );
		
		System.out.println("\nThe Total Number of Negative Items = " + count);
	}
	
	public static int CountNegativeElement(int[] count_NegArr, int size ) {
		int i, count = 0;
		
		for(i = 0; i < size; i++) 
		{
			if(count_NegArr[i] < 0) {
				count++;
			}
		}
		return count;
	}
}

Java count negative numbers in an array using for loop and functions output

Please Enter the CNT NEG Array size  : 11

Enter CNT NEG Array 11 elements : -3 -5 0 -8 -11 8 6 99 -22 -55 4

The Total Number of Negative Items = 6