public class Student {

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

	public String getFirstName() {
		return first;

	}

	public String getLastName() {
		return last;
	}


	public int getExamGrade() {
		return exam;
	}

	public char getLetterGrade() {
		return letter;
	}

	public void setFirstName(String first) {

		this.first = first;
	}


	public void setLastName(String last) {
		this.last = last;
	}

	public void setExamGrade(int exam) {
		if(exam >=0)
		    this.exam = exam;
	}


	public void evaluateLetterGrade() {

		if(exam>=60)
		   letter = 'P';
		else
		    letter = 'F';

	}	

	

}