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GradeBook2.java
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72 lines (55 loc) · 1.72 KB
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package src;
import java.util.Scanner;
public class GradeBook2 {
private String courseName;
// default src.constructor.
public GradeBook2() {
courseName = "";
}
// parametrized src.constructor.
public GradeBook2(String courseName) {
this.courseName = courseName;
}
// setter method.
public void setCouseName(String courseName) {
this.courseName = courseName;
}
// getter method.
public String getCourseName() {
return (this.courseName);
}
// display method.
public void displayMessage() {
System.out.println("Welcome to the grade src.book for " + getCourseName());
}
// average finder method.
public void determineClassAverage() {
var input = new Scanner(System.in);
int total = 0;
int grade = 0;
int gradeCounter = 0;
double average = 0.0;
System.out.print("Enter grade or -1 to quit : ");
grade = input.nextInt();
while (grade != -1) {
total += grade;
gradeCounter++;
System.out.print("Enter grade or -1 to quit : ");
grade = input.nextInt();
}
input.close();
if (gradeCounter != 0) {
average = (double) total / gradeCounter;
System.out.println("Total of " + gradeCounter + " grades are : " + total);
System.out.printf("Average grades are : %.2f\n", average);
} else {
System.out.println("No grades were entered.");
}
}
// main driven function
public static void main(String[] args) {
var gradebook = new GradeBook2("CS 50");
gradebook.displayMessage();
gradebook.determineClassAverage();
}
}