How to Calculate Grade of Students in Java

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by Abdul Rawoof A R dot icon Updated: Feb 12, 2024

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Schools, colleges, and universities use student grading systems to test academic performance. They also use them to assign grades.  

To create a scholar grading gadget in Java, you may want to observe the steps:  

  • Define the class structure: Start by creating a Java class for the grading system. This elegance must have example variables for storing data. For example, you need variables for the student's name, ID, and a list of grades.  
  • Implement the constructor: Next, install a constructor for the class. The constructor takes in the necessary data (name, student ID, etc.) as arguments. It initializes the instance variables.  
  • Implement methods for adding and retrieving grades: You will need to install methods for adding grades to the list of grades for a student. Also, you will need to install methods for retrieving the list of grades.  
  • Implement a method for calculating the GPA: Write a way that calculates the GPA for a scholar based on their grades.  
  • Test your code: Create instances of the student class. Add grades for each student. Then, use the GPA calculation technique to confirm that the GPA is being calculated. 

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.



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.


1. How do I calculate the average grade in Java? 

To calculate the average grade, you need to sum up all the grades and divide them by the total number of grades. 

2. How can I convert a percentage to a letter grade in Java? 

You can use conditional statements. It is to determine the letter grade based on the percentage. 

3. What is the best way to handle input validation for grades in Java? 

You can use loops to prompt the user for valid input until they enter a grade within the desired range (e.g., 0 to 100). 

4. How do I handle weighted grades in Java? 

To handle weighted grades, multiply each grade by its corresponding weight. Then, sum up the weighted grades and divide them by the total weight. 

5. Can I use arrays or collections to store grades in Java? 

Yes, you can use arrays or collections (like ArrayList) to store grades. This makes it easier to perform calculations and manipulate data.


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