added student.java

[rafsaniShazid]

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.09%. Comparing base (f57ffa9) to head (0d03d91).

Files with missing lines	Patch %	Lines
...c/main/java/com/thealgorithms/student/Student.java	0.00%	10 Missing ⚠️
...ain/java/com/thealgorithms/student/Calculator.java	0.00%	4 Missing ⚠️
src/main/java/com/thealgorithms/student/Grade.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6536      +/-   ##
============================================
- Coverage     75.15%   75.09%   -0.06%     
- Complexity     5594     5595       +1     
============================================
  Files           688      691       +3     
  Lines         19361    19377      +16     
  Branches       3744     3744              
============================================
+ Hits          14551    14552       +1     
- Misses         4245     4261      +16     
+ Partials        565      564       -1     

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[DenizAltunkapan]

Thank you for your contribution. However, this implementation is not considered an algorithm, and therefore it does not fit the scope of this repository.