Course.java

import java.io.Serializable;

/**

* Represents a course that might be taken by a student.

*

*/

public class Course implements Serializable

{

private String prefix;

private int number;

private String title;

private String grade;

/**

* Constructs the course with the specified information.

*

* @param prefix the prefix of the course designation

* @param number the number of the course designation

* @param title the title of the course

* @param grade the grade received for the course

*/

public Course(String prefix, int number, String title, String grade)

{

this.prefix = prefix;

this.number = number;

this.title = title;

if (grade == null)

this.grade = "";

else

this.grade = grade;

}

/**

* Constructs the course with the specified information, with no grade

* established.

*

* @param prefix the prefix of the course designation

* @param number the number of the course designation

* @param title the title of the course

*/

public Course(String prefix, int number, String title)

{

this(prefix, number, title, "");

}

/**

* Returns the prefix of the course designation.

*

* @return the prefix of the course designation

*/

public String getPrefix()

{

return prefix;

}

/**

* Returns the number of the course designation.

*

* @return the number of the course designation

*/

public int getNumber()

{

return number;

}

/**

* Returns the title of this course.

*

* @return the prefix of the course

*/

public String getTitle()

{

return title;

}

/**

* Returns the grade for this course.

*

* @return the grade for this course

*/

public String getGrade()

{

return grade;

}

/**

* Sets the grade for this course to the one specified.

*

* @param grade the new grade for the course

*/

public void setGrade(String grade)

{

this.grade = grade;

}

/**

* Returns true if this course has been taken (if a grade has been received).

*

* @return true if this course has been taken and false otherwise

*/

public boolean taken()

{

return !grade.equals("");

}

/**

* Determines if this course is equal to the one specified, based on the

* course designation (prefix and number).

*

* @return true if this course is equal to the parameter

*/

public boolean equals(Object other)

{

boolean result = false;

if (other instanceof Course)

{

Course otherCourse = (Course) other;

if (prefix.equals(otherCourse.getPrefix()) &&

number == otherCourse.getNumber())

result = true;

}

return result;

}

/**

* Creates and returns a string representation of this course.

*

* @return a string representation of the course

*/

public String toString()

{

String result = prefix + " " + number + ": " + title;

if (!grade.equals(""))

result += " [" + grade + "]";

return result;

}

}

(1) Objective: Create java Class to implement Iterable interface (2 points) Download Course.java (a) Write a java class that implements Iterable interface to Read the input file "CourseForProgram.txt" which contains course records (b) From the main driver program (1) Implement Iterable interface to display the list of course records from "CourseForProgram.txt" input file. (2) Remove all courses that don't have grade. (3) Display the list after removing those records