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How to Calculate Grade of Students in Java

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by Abdul Rawoof A R dot icon Updated: Feb 1, 2023

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A student grading system is a system used by schools, colleges, and universities to evaluate the academic performance of students and assign grades. To create a student grading system in Java, you will need to follow these steps: 

  • Define the class structure: Start by creating a Java class for the grading system. This class should have instance variables for storing student data such as name, student ID, and a list of grades. 
  • Implement the constructor: Next, implement a constructor for the class that takes in the necessary data (name, student ID, etc.) as arguments and initializes the instance variables. 
  • Implement methods for adding and retrieving grades: You will need to implement methods for adding grades to the list of grades for a student and for retrieving the list of grades. 
  • Implement a method for calculating the GPA: Write a method that calculates the GPA for a student based on their grades. 
  • Test your code: Test your code by creating instances of the student class and adding grades for each student. Then, use the GPA calculation method to verify that the GPA is being calculated correctly. 


For more information about student’s grading system in Java, refer to the code given below. 

Fig 1: Preview of code snippet in IDE.

Fig 2: Preview of the output that you will get on running this code from your IDE.

Code

Enter student grades, average them and then rank the student by grades

JavadotLines of Code : 27dotLicense : Strong Copyleft (CC BY-SA 4.0)

int[] grade = {50,60,30,40,80};
int temp;
    for (int i = 0; i < grade.length; i++) 
    {
        for (int j = i + 1; j < grade.length; j++) 
        {
            if (grade[i] > grade[j]) 
            {
                temp = grade[i];
                grade[i] = grade[j];
                grade[j] = temp;
            }
        }
    }
    System.out.println("Rank from lowest to highest:");
    for (int i = 0; i < grade.length - 1; i++) 
    {
        System.out.print(grade[i] + "\n");
    }
    System.out.print(grade[grade.length - 1]);

    System.out.println("\n\nRank from highest to lowest:");
    for (int i = 4; i >= 0; i--) 
    {
        System.out.print(grade[i] + "\n");
    }

Instructions

Follow the steps carefully to get the output successfully:

  1. Copy the code using the "Copy" button above, and paste it in a Java file in your IDE(IntelliJ Preferable).
  2. Run the file to generate the output.


Note: Create main method and then copy the code snippet inside the main method.


I hope you found this useful.


I found this code snippet by searching for 'student grading system' in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created in IntelliJ IDE and Java jdk-'11.0.17'.
  2. The solution is tested on Java 11.0.17.


Using this solution, we are able to create students grading system using java with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to students create grading system using Java.

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