Create a Grade class, a Transcript class and a Registrar class which do the following, based on well designed objectoriented code. Consider variable type, scope, and modifiers like static and final in your solution. Other methods besides the

ones delineated below may be necessary to meet the specifications.

Your system must provide a way to add grades to a transcript, remove grades from a transcript and calculate a GPA based on

the grades in a transcript. Provide a remove method that removes all instances of a grade with the same name, and one that

removes only instances with the same name and letter grade. Each grade item must include a course number, a grade letter,

a grade point and a credit hour, but only $1$ grade format needs to be specified on creation; the other should be calculated via

static methods in the Registrar $($a utilities class for grade manipulation$).$ Empty Grade items are not allowed.

Transcripts must have a numeric student Id associated with them, but are allowed to have no assigned grades. The

Transcript should rely on the Registrar to calculate the GPA. Both Grade and Transcript should override

toString$(),$ but the Transcrip