public void validateStudent(Student s)
{
if (this.nameIsEmpty(s.getName()))
throw new StudentException("Name cannot be empty!\n");
if (this.studentExists(s.getId()))
throw new StudentException("Student id already exists!\n");
}
public String addStudent(String name, int id, int grade)
{
/*
* Asks validator if the student id is already used
* returns string if so
* if not, repository is called and student object is added
*
* pre cond: string name, int id, int grade (of the student)
* post cond: string with status message
*/
/*
if (this.val.nameIsEmpty(name))
throw new StudentException("Name cannot be empty!");
if (this.val.studentExists(id))
return "Student id already exists!";
Student s = new Student(name, id, grade);
this.repo.addStudent(s);
return "Student added successfully!";
*/
try
{
Student s = new Student(name, id, grade);
this.val.validateStudent(s);
this.repo.addStudent(s);
return "Student added successfully!";
}
catch (StudentException ex)
{
return ex.getMessage();
}
}
public void addStudent(Student s)
{
/*
* pre cond: s of type Student
* post cond: -
*
* Adds on top of the stack a student object
*/
stack.push(s);
}
public void push(Student s)
{
/*
* pre cond: s of type Student
* post cond: -
*
* adds object on top of stack; if maximum capacity is reached,
* it doubles it
*/
size++;
if (size == capacity)
increaseCapacity();
students[size] = s;
}