Computer Science 202

Introduction to Programming

Fall 2012, The College of Saint Rose

GradingBreakdown BlueJ Project

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GradingBreakdown Source Code

The Java source code for GradingBreakdown is below. Click on a file name to download it.

/* * Example GradingBreakdown -- compute averages based on a grading breakdown, * prompt for actual grade values for each category, then * compute and report a final average * * Jim Teresco, The College of Saint Rose, CSC 202, Fall 2012 * * $Id: GradingBreakdown.java 2001 2012-11-29 15:57:51Z terescoj $ */ import java.util.Scanner; public class GradingBreakdown { public static void main(String[] args) { // constants for the points and percentages for each grade component final double LA_POINTS = 150; final double LA_PERCENTAGE = 5; final double LAB_POINTS = 305; final double LAB_PERCENTAGE = 10; final double PROJECT_POINTS = 200; final double PROJECT_PERCENTAGE = 15; final double EXAM1_POINTS = 75; final double EXAM1_PERCENTAGE = 20; final double EXAM2_POINTS = 75; final double EXAM2_PERCENTAGE = 25; final double FINAL_POINTS = 100; final double FINAL_PERCENTAGE = 25; System.out.println("This program will help you determine your course average."); System.out.println("Please enter your raw scores for each grading category when prompted."); // create a keyboard Scanner Scanner keyboard = new Scanner(System.in); // accumulate total grade here double overallGradeEarned = 0.0; // lecture assignments: // read in and error check number of LA points double laPointsEarned = 0.0; do { System.out.print("How many lecture assignment points did you earn (total available: " + LA_POINTS + ")? "); laPointsEarned = keyboard.nextDouble(); if ((laPointsEarned < 0.0) || (laPointsEarned > LA_POINTS)) { System.out.println("Response must be in the range 0.0 to " + LA_POINTS + "!"); } } while ((laPointsEarned < 0.0) || (laPointsEarned > LA_POINTS)); // compute contribution to total grade for lecture assignments double laGradeEarned = laPointsEarned / LA_POINTS * LA_PERCENTAGE; overallGradeEarned += laGradeEarned; System.out.println("Earned " + laGradeEarned + " grade points out of " + LA_PERCENTAGE + " possible."); // lab assignments: // read in and error check number of lab points double labPointsEarned = 0.0; do { System.out.print("How many lab points did you earn (total available: " + LAB_POINTS + ")? "); labPointsEarned = keyboard.nextDouble(); if ((labPointsEarned < 0.0) || (labPointsEarned > LAB_POINTS)) { System.out.println("Response must be in the range 0.0 to " + LAB_POINTS + "!"); } } while ((labPointsEarned < 0.0) || (labPointsEarned > LAB_POINTS)); // compute contribution to total grade for lab assignments double labGradeEarned = labPointsEarned / LAB_POINTS * LAB_PERCENTAGE; overallGradeEarned += labGradeEarned; System.out.println("Earned " + labGradeEarned + " grade points out of " + LAB_PERCENTAGE + " possible."); // project assignments: // read in and error check number of project points double projectPointsEarned = 0.0; do { System.out.print("How many project points did you earn (total available: " + PROJECT_POINTS + ")? "); projectPointsEarned = keyboard.nextDouble(); if ((projectPointsEarned < 0.0) || (projectPointsEarned > PROJECT_POINTS)) { System.out.println("Response must be in the range 0.0 to " + PROJECT_POINTS + "!"); } } while ((projectPointsEarned < 0.0) || (projectPointsEarned > PROJECT_POINTS)); // compute contribution to total grade for projects double projectGradeEarned = projectPointsEarned / PROJECT_POINTS * PROJECT_PERCENTAGE; overallGradeEarned += projectGradeEarned; System.out.println("Earned " + projectGradeEarned + " grade points out of " + PROJECT_PERCENTAGE + " possible."); // exam 1: // read in and error check number of exam1 points double exam1PointsEarned = 0.0; do { System.out.print("How many exam1 points did you earn (total available: " + EXAM1_POINTS + ")? "); exam1PointsEarned = keyboard.nextDouble(); if ((exam1PointsEarned < 0.0) || (exam1PointsEarned > EXAM1_POINTS)) { System.out.println("Response must be in the range 0.0 to " + EXAM1_POINTS + "!"); } } while ((exam1PointsEarned < 0.0) || (exam1PointsEarned > EXAM1_POINTS)); // compute contribution to total grade for exam 1 double exam1GradeEarned = exam1PointsEarned / EXAM1_POINTS * EXAM1_PERCENTAGE; overallGradeEarned += exam1GradeEarned; System.out.println("Earned " + exam1GradeEarned + " grade points out of " + EXAM1_PERCENTAGE + " possible."); // exam 2: // read in and error check number of exam2 points double exam2PointsEarned = 0.0; do { System.out.print("How many exam2 points did you earn (total available: " + EXAM2_POINTS + ")? "); exam2PointsEarned = keyboard.nextDouble(); if ((exam2PointsEarned < 0.0) || (exam2PointsEarned > EXAM2_POINTS)) { System.out.println("Response must be in the range 0.0 to " + EXAM2_POINTS + "!"); } } while ((exam2PointsEarned < 0.0) || (exam2PointsEarned > EXAM2_POINTS)); // compute contribution to total grade for exam 2 double exam2GradeEarned = exam2PointsEarned / EXAM2_POINTS * EXAM2_PERCENTAGE; overallGradeEarned += exam2GradeEarned; System.out.println("Earned " + exam2GradeEarned + " grade points out of " + EXAM2_PERCENTAGE + " possible."); // final exam: // read in and error check number of final points double finalPointsEarned = 0.0; do { System.out.print("How many final points did you earn (total available: " + FINAL_POINTS + ")? "); finalPointsEarned = keyboard.nextDouble(); if ((finalPointsEarned < 0.0) || (finalPointsEarned > FINAL_POINTS)) { System.out.println("Response must be in the range 0.0 to " + FINAL_POINTS + "!"); } } while ((finalPointsEarned < 0.0) || (finalPointsEarned > FINAL_POINTS)); // compute contribution to total grade for final double finalGradeEarned = finalPointsEarned / FINAL_POINTS * FINAL_PERCENTAGE; overallGradeEarned += finalGradeEarned; System.out.println("Earned " + finalGradeEarned + " grade points out of " + FINAL_PERCENTAGE + " possible."); // now, we are ready to report an overall average System.out.println("Your overall course average is " + overallGradeEarned + "."); } }