public class Student {

	private String first;
	private String last;
	private int exam;
	private char letter;


	public Student(String first, String last, int exam)
		throws Exception
	{
		this.first = first;
		this.last = last;

		if(exam < 0)
		    throw new Exception();

		this.exam = exam;
		
		evaluateLetterGrade();
	}


	private void evaluateLetterGrade() {
		letter = exam >=60? 'P' : 'F';
	}

	public String getFirst() {
		return first;
	}

	public String getLast() {
		return last;
	}


	public int getExamGrade() {
		return exam;
	}

	
}