Program to print the sum of negative numbers, sum of positive even numbers and the sum of positive odd numbers from a list of numbers (N) entered by the user. The list terminates when the user enters a zero in Java.
package com.hubberspot.java.example;
import java.util.Scanner;
public class SumArray {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int [] numbers = new int[0];
int number;
String nextLine;
do {
System.out.print("Enter the number : ");
number = scanner.nextInt();
nextLine = scanner.nextLine();
if(number != 0) {
numbers = add(numbers, number);
}
} while(number != 0);
int negativeSum = 0;
int oddSum = 0;
int evenSum = 0;
for(int i = 0; i < numbers.length; i++ )
{
if( numbers[i] < 0 )
{
negativeSum = negativeSum + numbers[i];
}
else if( numbers[i] % 2 == 0 )
{
evenSum = evenSum + numbers[i];
}
else
{
oddSum = oddSum + numbers[i];
}
}
System.out.println( "Sum of negative numbers : " + negativeSum );
System.out.println( "Sum of positive even numbers: " + evenSum );
System.out.println( "Sum of positive odd numbers: " + oddSum );
}
private static int[] add(int[] numbers, int number) {
int[] tempArray = new int[numbers.length + 1];
for(int i = 0; i < numbers.length; i++) {
tempArray[i] = numbers[i];
}
tempArray[tempArray.length - 1] = number;
return tempArray;
}
}
Output of the program : 
