To create a method that sum’s up an array, first of all you have to know how to create a method, if you know how to create a method then let dive right in, else I suggest u look up my article on Java methodlink

 

Below are the steps to create a method that sum’s up an array

Steps

1.create a method name with an argument of an array e.g

public static int sumMyArray(int[] array){}

 

2.Inside your method initialize variable depending on your array type or method return type ( it advisable to use your method return type), make it equals to 0 e.g

public static int sumMyArray(int[] array){
 int sum = 0;
}

 

3.Loop through your array and add each value in ur array to sum e.g

public static int sumMyArray(int[] array){
 int sum = 0;
for(int i=0; i < array.length; i++)
        sum += array[i];
  return sum;
}

 

Lets test our our method

test Example

public class Sample {
    public static void main(String[] args){
        int[] num = {1, 3, 5, 7, 10, 11, 15, 2, 1};
        int sum = sumMyArray(num);
        System.out.println(sum);
 
    }

    public static int sumMyArray(int[] array){
            int sum = 0;
            for(int i=0; i < array.length; i++)
                sum += array[i];
            return sum;
        }
}

//output:55