Write a recursive Java method to add the elements in an int array together. The signature for the method could be as below: (7 marks). public static int sum (int intArray [], int n) 1. What is the output of the following code when method water is called? Draw system stack (stack frame) for each method call (8 marks) public int common(int x) { return x * 2; } public int common(int x, int y). { return common(x) + y; } public void water() { int a = 2; int b = 3; System.out.println(common(a, b));