/** Creates a new GradeManager. */
public GradeManager() {
// Create a new HashMap of the grades
this.allGrades = new HashMap<LetterGrade, Integer>();
// Add in all grades and set the occurance to 0
for (LetterGrade gl : LetterGrade.values()) {
allGrades.put(gl, 0);
}
}
/**
* Returns a string representation of the histogram of the grades.
*
* @return a string representation of the histogram of the grades.
*/
public String getHistString() {
StringBuffer sb = new StringBuffer();
for (LetterGrade gl : LetterGrade.values()) {
sb.append(gl + ":");
for (int i = 0; i < this.allGrades.get(gl); i++) {
sb.append("*");
}
sb.append("\n");
}
return sb.toString();
}