The MyString class must have the following private instance variables $($fields$)$:

a variable named capacity that will store an int

a variable named length that will store an int

a variable named data that will store a char$[]($char array$)$

The MyString class must have the following public constructor methods:

a default constructor

an overloaded constructor with an int parameter

an overloaded constructor with a String parameter

The MyString class must have the following public methods:

a method named charAt. This method will have one parameter of type int. This method will return a char.

a method named concat. This method will have one parameter of type MyString. This method will return nothing.

a method named equals. This method will have one parameter of type MyString. This method will return a boolean.

a method named indexOf. This method will have one parameter of type MyString. This method will return an int.

a method named length. This method will have no parameters. This method will return an int.

a method named makeCapacity. This method will have one parameter of type int. This method will return nothing.

a method named store. This method will have one parameter of type MyString. this method will return nothing.

a method named store. This method will have one parameter of type String. this method will return nothing.

a method named substring. This method will have two parameters of type int. This method will return a MyString.

a method named toString. This method will have no parameters.