can anyone explain me the working

Question

public class Program {
public static void main(String[] args) {int [ ] myArr = {6, 42, 3, 7};
int sum=0;
for(int x=0; x<myArr.length; x++) {
sum += myArr[x];
}
System.out.println(sum);

// 58

Answer 1

for loop runs 4 times with x value increasing by 1
sum=sum+myArr[x] adds the value at index x to sum then

Answer 2

sorry but i still did not get it can you please give a dry run with explaination please
?