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Thread: Java Grade Caculator

  1. #1
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    Default Java Grade Caculator

    I need some help here I would like to remove repeated coding for a cleaner look but I am not sure how to do this at this point I already entered a if else to distinguish what will happen with code but I alos had to repeat code to do this is there a way to return the correct output based on the user choice of Graduate or Undergrad?
                    if (choice == 1) {
                        do {//do while block
                            try {//try catch block for exception handeling
                                // collect grades of tests
                                for (int i = 0; i < noTests; i++) {
                                    System.out.printf("Enter grade number for %s %s %d: ", grad.getFirstname(), grad.getLastname(), i + 1);
                                    grad.setGrades(scan.nextInt());                           
                                flag = false;
                                }
                            } catch (InputMismatchException IME) {//catch begin
                                System.err.printf("Exception!\nYou must enter a number. Please try again.\n", IME);//check for improper imput
                                scan.nextLine();                            
                                flag = true;//return to top if ture is false
                            }
                        } while (flag);//End do loop
                        do {//do while block
                            try {//try catch block for exception handeling
                                System.out.printf("Enter Midterm grade for: %s %s ", grad.getFirstname(), grad.getLastname());
                                grad.setmidtermgrad(scan.nextInt());
                                flag = false;
                            } catch (InputMismatchException IME) {//catch begin
                                System.err.printf("Exception!\nYou must enter a number. Please try again.\n", IME);//check for improper imput
                                scan.nextLine();                            
                                flag = true;//return to top if ture is false
                            }
                        } while (flag);//End do loop
                        do {
                            try {//try catch block for exception handeling
                                System.out.printf("Enter final grade for: %s %s ", grad.getFirstname(), grad.getLastname());
                                grad.setfinalgrade(scan.nextInt());
                                flag = false;
                            } catch (InputMismatchException IME) {//catch begin
                                System.err.printf("Exception!\nYou must enter a number. Please try again.\n", IME);//check for improper imput
                                scan.nextLine();                            
                                flag = true;//return to top if ture is false
                            }
                        } while (flag);//End do loopp                  
                        //collect information and display results
                        System.out.printf("Average grade for: %s %s %.2f\n", grad.getFirstname(), grad.getLastname(), grad.getGradeAvg());
                        System.out.printf("THE FINAL GRADE FOR STUDENT: %s %s %.2f\n", grad.getFirstname(), grad.getLastname(), grad.getFinalGrade());
                    } else if (choice == 2) {//begin else statement
                        do {//do while block
                            try {//try catch block for exception handeling
                                // collect grades of tests
                                for (int i = 0; i < noTests; i++) {
                                    System.out.printf("Enter grade number %d: ", i + 1);
                                    Grad.setGrades(scan.nextInt());
                                }
                                flag = false;
                            } catch (InputMismatchException IME) {//catch begin
                                System.err.printf("Exception!\nYou must enter a number. Please try again.\n", IME);//check for improper imput
                                scan.nextLine();                            
                                flag = true;//return to top if ture is false
                            }
                        } while (flag);//End do loop
                        do {
                            try {//try catch block for exception handeling
                                System.out.printf("Enter final grade for: %s %s ", Grad.getFirstname(), Grad.getLastname());
                                Grad.setfingrade(scan.nextInt());
                                flag = false;
                            } catch (InputMismatchException IME) {//catch begin
                                System.err.printf("Exception!\nYou must enter a number. Please try again.\n", IME);//check for improper imput
                                scan.nextLine();                            
                                flag = true;//return to top if ture is false
                            }
                        } while (flag);//End do loop
                        System.out.printf("Average grade for: %s %s %.2f\n", Grad.getFirstname(), Grad.getLastname(), Grad.getGradeAvg());
                        System.out.printf("THE FINAL GRADE FOR STUDENT: %s %s %.2f\n", Grad.getFirstname(), Grad.getLastname(), Grad.getFinGrade());
                    }
     
        } //End Main Method
    } //End Class Egingras_week13
    Last edited by jps; December 5th, 2012 at 03:52 AM. Reason: Added code tags


  2. #2
    Think of me.... Mr.777's Avatar
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    Default Re: Java Grade Caculator

    For reusability, you have to think about it. Which part of the whole program needs to be executed again and again, make it as a function and so on.
    Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.

    - Henry Ford

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