I have to implement the code with teacher comments
I have to implement the code with teacher comments
public class CourseRoster {
//Do NOT add or remove any of these data members
private String courseName;
private String instructorName;
private Student[] roster;
public CourseRoster(){
//Constructs a CourseRoster
// DO NOT modify this method
courseName = “CMSC 131”;
instructorName = “Tom R”;
roster = null;
}
public void addStudent(Student newMember){
//adds a new item always to the end of the list
// This one is already implemented for you
//Do NOT modify this method
if (roster == null){
roster = new Student[1];
roster[0] = new Student(newMember);
}else{
Student[] tempStudentArr =
new Student[roster.length+1];
for (int index = 0; index < roster.length; index++){
tempStudentArr[index] = roster[index];
}
tempStudentArr[roster.length] = new Student(newMember);
roster = tempStudentArr;
}
}
public String getNames(){
// returns the list of student names concatenated together
// it will be used in the junit tests to determine if students
// were added in the correct order
// This one is already implemented for you
// Do NOT modify this method
if (roster == null){
return null;
}else{
String list=””;
for (int index = 0; index < roster.length;index++){
list+=roster[index].getName();
}
return list;
}
}
public int getSize(){
//returns the current size of the roster array
//This one is already implemented for you
// Do NOT modify this method
if (roster == null){
return 0;
}else{
return roster.length;
}
}
public int findIndex(String name){
// returns the index for the first occurrence of a Student
// in the roster whose name matches that value of the parameter
// or returns -1 if that name is not in the list
return -1;
}
public int getValues(){
//returns the sum of all values of the individual
// items in the current array based on the
// object’s getValue method
// if the list is empty, the value 0 is returned
return -1;
}
public int giveMoreAid(){
// gives a raise in financial aid to each member of the list
// each according to its giveMoreAid method
// returns the sum of the return values
// of all of the calls to the giveMoreAid methods
// if the list is empty, the value 0 is returned
return -1;
}
public boolean removeStudent(String name){
// Removes the first student whose name matches
// the value of the parameter and returns true- if a student
// with that name appears in the roster.
// Returns false – if that name does not appear
// in the current roster and does not remove anything.
// If a student is removed from the roster, the roster array
// must remain the exact size needed to hold the number
// of Students currently in the class (the size of the array itself
// must be one smaller if there is one fewer elements in the list.
// If the one being removed is the only student in the list, the
// roster should become null (as it was set in the constructor).
return false;
}
}
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