THIS IS JAVA PROGRAMMING...

Objectives:

1. Apply UML design on user defined class

2. Write overloaded constructors of a class

3. Write customer methods of the class (Other than get and set methods)

QUESTION:

Write your own String class based on the following UML diagram. No built-in String, StringBuffer related classes are allowed.

MyString

-data: char[]

+MyString(chars: char[])

+charAt(i: int) : char

+length() : int

+substring(begin: int, end: int) : MyString

+toLowerCase() : MyString

+equals(other: MyString) : Boolean

+valueOf(i: int) : MyString

All methods have the same functionality as the corresponding methods in String class. You shall provide a main function to test all methods in MyString class.