In Java;

Create a Java program with a method that searches an integer array for a specified integer value $($see help with starting the method header below$).$ If the array contains the specified integer, the method should return its index in the array. If not, the method should throw an Exception stating "Element not found in array" and end gracefully. Test the method in main with an array that you make and with user input for the "needle".

public static int returnIndex$($int$[]$ haystack, int needle$)\{$

Exercise $2$

Write a program in a single file that:

Main:

Creates $10$ random doubles, all between $1$ and $11,$

Calls a method that writes $10$ random doubles to a text file, one number per line.

Calls a method that reads the text file and displays all the doubles and their sum accurate to two decimal places.