The String class is provided in the Java library. Provide your own Java implementation for the following methods (name the new class MyString): public Mystring(char[] chars); public char charat(int index); int length(); public Mystring substring(int begin, int end); Mystring tolowercaseO; public boolean equals(Mystring s); public static Mystring valueofCint 1); public int compare(String s); public Mystring substring(int begin); public Mystring touppercase(); Write a Java test program that tests all methods in the class.

To begin, let's define strings.

I need the code from start to end with no errors and the explanation for the code ObjectivesJava refresher (including file I/O)Use recursionDescriptionFor this project, you get to write a maze solver. A maze is a two dimensional array of chars. Walls are represented as '#'s and ' ' are empty squares. The maze entrance is always in the first row, second column (and will always be an empty square). There will be zero or more exits along the outside perimeter. To be considered an exit, it must be reachable from the entrance. The entrance is not an exit.Here are some example mazes:mazeA7 9# # ###### # #   ## # # #### #     ## ##### ##       ########## RequirementsWrite a MazeSolver class in Java. This program needs to prompt the user for a maze filename and then explore the maze. Display how many exits were found and the positions (not indices) of the valid exits. Your program can display the valid exits found in any order. See the examples below for exact output requirements. Also, record…

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