please help me i have only 15 min to solve it (java language)

1- [7 pts) Assume an array of integers A of size n is given (n is greater than 5). Write one statement to print the sum between the third element and the fifth element in A. 2- [6 pts] A method called M accepts a character x and an array of characters named A, then returns the number of occurrences of x in the array A. What will the signature of this method be? DO NOT write the body of the method. 3- [7 pts] Complete the method code so it returns the last element in the array a. Call the method in the main. public static void main(stringargs) intl a=19,1,4,8); System.out.print public static int lastElement(int