Summing Elements in Array

Question

Hi, I've been doing learning and I have come to encounter this issue.
QUESTION : You are given a program that takes the length of the array as the 1st input, creates it & then takes the next inputs as elements of the array.

Complete the program to go through the array & calculate the sum of the numbers that are multiples of 4.

// I did add a couple of lines so that the programme can get through which i/put is the multiple of 4. However, the results keep showing, the class was not found. Pls, help me.

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int length = scanner.nextInt();
int[] array = new int[length];
for (int i = 0; i < length; i++) {
array[i] = scanner.nextInt();
}

//your code goes here
int sum = 0;
if (array[i] % 4 ==0);{
sum = sum += array[i];{
System.out.println(sum);
}

}

}
}

Answer 1

add for() loop
delete ; after if ()
sum += array[i]; //delete one '=sum' and { at the end
count { } pairs and consider if it is necessary to use it
print result outside if() {} and for() {}

; after if() causes end of if() command and next lines are out of if

Answer 2

package learningcoding;

import java.util.Scanner;

public class lesson16arraysumming {
public static void main(String[] args) {
Scanner read = new Scanner(System.in);
int length = read.nextInt();
int[] array = new int[length];
int sum = 0;
int sum2 = 0;
int n = -1;
for (int i = 0; i < length; i++) {
array[i] = read.nextInt();
if (array[i] % 4 == 0) {
sum += array[i];
}
}
System.out.println(sum);

System.out.println();
/************************************/
while (n < length - 1) {
n++;
array[n] = read.nextInt();
if (array[n] % 4 == 0) {
sum2 += array[n];

}
}
System.out.println(sum2);
}
}
//either loop works