Class Student

java.lang.Object

Student

public class Student
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Student(java.lang.String firstName) Student(String) This constructor calls the designated constructor Student(String, String), with the specified first name, and lastName = "LNU".
Student(java.lang.String firstName, java.lang.String lastName) Student(String, String) This designated constructor sets the first and last name of the student.

Method Summary

Modifier and Type	Method and Description
void	changeName(java.lang.String firstName, java.lang.String lastName) changeName(String, String) This instance method takes in two Strings as the first and last names.
static java.lang.String	classStatistics() classStatistics() This class method returns the number of grades, sum of all grades, average grade, lowest grade, and highest grade as one String.
static double	getAverageGrade() getAverageGrade() This class method returns the average grade of all students.
int	getGrade() getGrade() This instance method returns the student's grade.
static int	getHighestGrade() getHighestGrade() This class method returns the highest grade of all students.
int	getID() getID() This instance method returns the student ID.
static int	getLowestGrade() getLowestGrade() This class method returns the lowest grade of all students.
java.lang.String	getName() getName() This instance method returns the student's full name (first + last).
static int	getNumberOfGrades() getNumberOfGrades() This class method returns the number of grades, in this case equivalent to the number of students.
static int	getTotalGrade() getTotalGrade() This class method returns the sum of all the grades.
void	setGrade(int grade) setGrade(int) This instance method records (sets) the student's grade.
java.lang.String	toString() toString() This instance method returns the name, SID, and grade of the student.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Student

public Student(java.lang.String firstName,
               java.lang.String lastName)

Student(String, String) This designated constructor sets the first and last name of the student. It also gives the student a unique ID, based on the class variables.

Parameters:

firstName - First name of the student as a String.

lastName - Last name of the student as a String.

Student

public Student(java.lang.String firstName)

Student(String) This constructor calls the designated constructor Student(String, String), with the specified first name, and lastName = "LNU".

Parameters:

firstName - User-specified first name as a String.

Method Detail

setGrade

public void setGrade(int grade)

setGrade(int) This instance method records (sets) the student's grade. We also want to increment numberOfGrades, add grade to totalGrade, and check if the grade is a lowest/highest grade.

Parameters:

grade - The grade of the student as an Integer.

getGrade

public int getGrade()

getGrade() This instance method returns the student's grade.

Returns:

Student's grade as Integer.

getID

public int getID()

getID() This instance method returns the student ID.

Returns:

Student's ID as an Integer.

changeName

public void changeName(java.lang.String firstName,
                       java.lang.String lastName)

changeName(String, String) This instance method takes in two Strings as the first and last names.

Parameters:

firstName - Student's first name.

lastName - Student's last name.

getName

public java.lang.String getName()

getName() This instance method returns the student's full name (first + last).

Returns:

Student's full name ("firstName lastName") as a String.

getNumberOfGrades

public static int getNumberOfGrades()

getNumberOfGrades() This class method returns the number of grades, in this case equivalent to the number of students.

Returns:

Number of grades as an Integer.

getTotalGrade

public static int getTotalGrade()

getTotalGrade() This class method returns the sum of all the grades.

Returns:

Sum of all grades as an Integer.

getLowestGrade

public static int getLowestGrade()

getLowestGrade() This class method returns the lowest grade of all students.

Returns:

Lowest grade of all students as an Integer.

getHighestGrade

public static int getHighestGrade()

getHighestGrade() This class method returns the highest grade of all students.

Returns:

Highest grade of all students as an Integer.

getAverageGrade

public static double getAverageGrade()

getAverageGrade() This class method returns the average grade of all students. The average grade is the sum of all grades divided by the number of grades. !!! Don't forget to type cast the result as a double. !!!

Returns:

The average grade of all students as a Double.

classStatistics

public static java.lang.String classStatistics()

classStatistics() This class method returns the number of grades, sum of all grades, average grade, lowest grade, and highest grade as one String.

Returns:

Number of grades, sum of grades, average grade, lowest grade, highest grade, as a String.

toString

public java.lang.String toString()

toString() This instance method returns the name, SID, and grade of the student.

Overrides:

toString in class java.lang.Object

Returns:

The name, SID, and grade of the student as a String.