Abstract Class

Calculate Cumulative Grade Point Average $($CGPA$)$ using Abstract Class

An abstract class is a class that is declared by the abstract keyword, and it may or may not include abstract methods. Abstract classes cannot be instantiated but can be subclassed.

There are three classes: Student, Aided, and SelfFinance.

Task:

Make the Student class abstract$.$

Declare one abstract method in the Student class $-$ String result$($String MarksOfStudent$).($This method should be declared as public$)$

Override the abstract method$($result$(0),$ and implement it in the Aided and SelfFinance classes by extending the abstract Student class.

Calculate the CGPA of the student, and return the CGPA in string format $($up to two decimal places$)$ for both Aided and SelfFinance classes.

Students are categorized as aided and self. Input $($MarksOfStudent$)$ differs based on the type of student.

Aided Student:

There are three sets of marks given for aided students, Subject marks, NCC marks, and Sports marks. The three sets are separated by $"$l$".$

Individual Subject marks are separated by comma $(,).$ Each mark is comprised of the subject marks and credit points, which are separated by space $(").$

In NCC marks, there are three sets of strings. The first one indicates if a student is involved in NCC or not $($if $0,$ you need not consider the subject marks and credit points$).$ The second one is subject marks, and the third one is credit points.

For Sports marks, follow the same procedure as NCC marks.

Self$-$Finance Student: