Write a Java program that prompts the user to enter a mathematical operation as input $($e$.$g$.,"7+9")$ and outputs the result of the operation. The program should:

$1.$ Take a mathematical operation as one string $($one input$).$

$2.$ Read the first number and second number and convert them from String to

double using $$Double$.$parseDouble$($numberAsString$).$

$3.$ Your program should have one $($switch$)$ statement.

$4.$ Use only Selections, Mathematical Functions, Characters, Strings and loops

DO NOT USE ARRAYS OR SPLITS AT ALL.