write a program in java to compare two user entered strings & print the results on the console.

Write a Java program that prompts the user for two strings, joins them, and displays the result in uppercase letters.

IN JAVA Write a function that takes in user input as a string. For all characters which are numeric, double its value and, if it is two digits, then replace it with the sum of its digits (e.g., 6 → 12 → 3 whereas 3 → 6). For all characters which are in uppercase, replace it with lowercase. For all characters which are in lowercase, replace it with uppercase (e.g., m → M and N → n).  The program should keep asking the user to enter strings until they either enter ‘q’ or ‘Q’.

With Java, use single, two-way and multi-way if statements to write different kinds of loops that process Strings.