Lucas Stelljes

I have found out that it's my assignment of "double qualPts = 0" that is resulting in the 0.0 GPA result.

What do I have to do to change this? I thought about creating a "private static double" method, but didn't think it was necessary. Is it, or is something else required?

-Lucas

Thank you for the quick reply.

So this is how I understand your comments: I need to define gpa in more then one place in order for it to "calculate" properly?

Also, I think I found my error. I have qualPts set = 0 at the beginning of the program. During the Loop when I try to calculate qualPts again, I multiply (numgrade + credits)*qualPts. Am I getting a 0.0 for my gpa calculation because it's being multiplied by 0, thus gaining a net result of 0?

Thanks,
-Lucas

Greetings,

I am working on a program to calculate the GPA of a student using a "While" Loop. I have the program written to near completion, and it runs, but I have an error.
Whenever I try to calculate the GPA, no matter how "high" or "low" the student's theoretical GPA should be, it always retains a result of 0.0. I am unable to figure out what I have mistyped/left out.

Can anyone help or suggest anything, or how to refine the program?
Thanks, Lucas

public static void main (String args[]) { java.util.Scanner input = new java.util.Scanner (System.in); int x = 1; System.out.print("How many credits was class#" +x+ "?"); int credits = input.nextInt(); input.nextLine(); double qualPts = 0; double totalCredits = 0; while(credits >= 0){ totalCredits = credits + totalCredits; System.out.println("What grade did you get?"); String grade = input.nextLine(); double numgrade = gpaPts(grade); qualPts = (numgrade + credits)*qualPts; x++; System.out.println("How many credits was class#" +x+ "?"); credits = input.nextInt(); input.nextLine(); } double gpa = (qualPts/totalCredits); System.out.printf("You're GPA is %.2f \n", gpa); System.out.print(finalGrades(gpa)); } private static String finalGrades(double gpaPts){ if (4.0 == gpaPts){ System.out.println("You made the President's List!");} if (gpaPts >= 3.5 && gpaPts <= 3.99){ System.out.println("You made the Dean's List!");} if (2.0 > gpaPts){ System.out.println("You will be placed on Academic Probation :'(");} return ("");} private static double gpaPts(String grade) { if(grade.equals("A")){ double gradePoint = 4.0; return gradePoint; } if(grade.equals("A-")){ double gradePoint = 3.7; return gradePoint; } if(grade.equals("B+")){ double gradePoint = 3.3; return gradePoint; } if(grade.equals("B")){ double gradePoint = 3.0; return gradePoint; } if(grade.equals("B-")){ double gradePoint = 2.7; return gradePoint; } if(grade.equals("C+")){ double gradePoint = 2.4; return gradePoint; } if(grade.equals("C")){ double gradePoint = 2.0; return gradePoint; } if(grade.equals("C-")){ double gradePoint = 1.7; return gradePoint; } if(grade.equals("D+")){ double gradePoint = 1.3; return gradePoint; } if(grade.equals("D-")){ double gradePoint = 1.0; return gradePoint; } if(grade.equals("F")){ double gradePoint = 0.0; return gradePoint; } return -1.0;} }

I appreciate all the help guys.

I would LOVE to start at a more simplistic approach to Java. However, being in a college course doesn't really allow that

I configured the program to work perfectly, alot of which came from the help provided here. I will definitely try to contribute things I learn and also seek advice when needed.

Thank you,
-Lucas

Okay, I made corrections that both of you recommended. Thank you.

I have resolved many of the issues but am still having a few errors.

In the lines where I try to calculate the "double totalGradeX" it tells me "Cannot find symbol (method gpaPts(java.lang.String)." I am confused because I thought my gpaPts method outside the "Main() {" function should be called to solve these "double totalGradeX" statements.

My "private static String finalGrades(double gpaPts){" is missing a return statement, but I am unsure of what to place afterwards as an appropriate return.

Lastly, my "private static double gpaPts(String grade){" claims there is a "Class, Interface, or Enum Expected" error. I have looked up how to solve this and reviewed notes I have on this topic, but I don't understand the solution. What am I supposed to type earlier in the program to make this method recognize the code?

Again, let me know if I can clarify anything.
Thanks.

public static void main (String args[]){ java.util.Scanner input = new java.util.Scanner (System.in); System.out.print("How many credits was your first class"); int credits1 = input.nextInt(); input.nextLine(); System.out.print("What grade did you get?"); String grade1 = input.nextLine(); double totalGrade1 = gpaPts(grade1); System.out.print("How many credits was your second class"); int credits2 = input.nextInt(); input.nextLine(); System.out.print("What grade did you get?"); String grade2 = input.nextLine(); double totalGrade2 = gpaPts(grade2); System.out.print("How many credits was your third class"); int credits3 = input.nextInt(); input.nextLine(); System.out.print("What grade did you get?"); String grade3 = input.nextLine(); double totalGrade3 = gpaPts(grade3); System.out.print("How many credits was your fourth class"); int credits4 = input.nextInt(); input.nextLine(); System.out.print("What grade did you get?"); String grade4 = input.nextLine(); double totalGrade4 = gpaPts(grade4); System.out.print("How many credits was your fifth class"); int credits5 = input.nextInt(); input.nextLine(); System.out.print("What grade did you get?"); String grade5 = input.nextLine(); double totalGrade5 = gpaPts(grade5); double allPoints=(totalGrade1+credits1)+(totalGrade2+credits2)+(totalGrade3+credits3)+(totalGrade4+credits4)+(totalGrade5+credits5); double allCredits=credits1+credits2+credits3+credits4+credits5; double gpaPts=allPoints/allCredits; System.out.printf("You're GPA is %.2f \n", gpaPts); System.out.print(finalGrades(gpaPts)); } // TODO code application logic here// TODO code application logic here private static String finalGrades(double gpaPts){ if (gpaPts == 4.0){ System.out.println("You made the President's List!");} if (gpaPts >= 3.5){ System.out.println("You made the Dean's List!");} if (gpaPts < 2.0){ System.out.println("You will be place on Academic Probation :'(");} } } private static double gpaPts(String grade) { if(grade.equals("A")){ double gradePoint = 4.0 } if(grade.equals("A-")){ double gradePoint = 3.7 }

Greetings,

I am new to Java SE. In my previous CompSci experience I used Python. I have writing a program currently that requires my to calculate a GPA given the user's input for Grades in 5 classes. On top of this, I must calculate and print if their GPA is sufficient enough to award them making the President's List, Dean's List, or Academic Probation.

I am not allowed to use a loop to ask the User to input their class/grade 5 times, so I am unsure how to ask the user for their inputs without a loop. Also, I must include the line of code: "private static double gpaPts(String grade) {" and am unsure where to include this, much-less what its function is.

I am having issues in lines 34-59 with "Cannot find symbol, identifier expected, and Illegal start of type." I know this is alot wrong, but any help at all would help me on my way to writing this program fully. If any more details are required, please do ask. I am new to programming and don't always know how much is needed to fix something.

Thanks!

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package GPA_HW1; /** * * @author Owner */ public class Main { /** * @param args the command line arguments */ public static void main (String args[]){ java.util.Scanner input = new java.util.Scanner (System.in); for (int counter = 1; counter = 5; counter ++) System.out.printf("%d", counter); System.out.print("How many credits was your class"); int credits = input.nextInt(); input.nextLine(); System.out.print("What grade did you get?"); int grade = input.nextInt(); input.nextLine(); } // TODO code application logic here// TODO code application logic here int totalgrades = average / gradecounter;{ int gpaPts = totalgrades;{ if (gpaPts == 4.0){ System.out.print("You made the President's List!");} if (gpaPts >= 3.5){ System.out.print("You made the Dean's List!");} if (gpaPts < 2.0){ System.out.print("You will be place on Academic Probation :'(");} } } private static double gpaPts(String grade) { if (grade == A) System.out.print("4.0"); else if(grade == A-) System.out.print("3.7"); else if(grade == B+) System.out.print("3.3"); else if (grade == B) System.out.print("3.0"); else if(grade == B-) System.out.print("2.7"); else if (grade == C+) System.out.print("2.4"); else if (grade == C) System.out.print("2.0"); else if (grade == C-) System.out.print("1.7"); else if (grade == D+) System.out.print("1.3"); else if (grade == D-) System.out.print("1.0"); else if (grade == F) System.out.print("0.0"); else if() System.out.print("-1.0"); System.out.print("Error!");} }