how to implement this in a java code that calculates a specific course GPA

1. You are required to use the techniques that have been covered in the refactoring lectures to your code. Remember that you do not have to change or alter the purpose of the code. 2. You need to apply from the following techniques a minimum of 3 : - Composing Methods Extract Method Replace Temp with Query Explaining Variable Split Temporary Variable Remove Assignments to Parameters - Simplifying Conditional Expressions Decompose Conditional Consolidate Conditional Expression