Question

JAVA - OOP inheritance help please

I have a question,

I have 4 classes.

College, course, professor, professorInfo

College create new course(int x, int y, int z)

Professor is a Super class, professorInfo is the sub class of Professor.

Each time creating new course, more than 1 professor will be added to some kind of an Array.

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I cant figure out how to work around this. I know that I have to create a type of professor which contain all the professor info, and store it in an Array of type Professor. But I dont know how to do that.

Answer 1

Please find the answer below::

There will be four classes as below.

1)

Super class Professor.java

public class Professor {

}

2)
Base class ProfessorInfo.java

public class ProfessorInfo extends Professor {

}

3)
Course.java

Course class contains an array of Professor.

Course class will be having a method called addNewCourse, This method needs noOfProceffesors as required field to initialize the array of procefessor.

public class Course {
   Professor professors[];
  
   void addNewCourse(int x,int y,int noOfProfessors){
       professors = new Professor[noOfProfessors];
   }
  
}

4)

College.java that can call addNewCourse method of course to add number of courses. It will contains the list of course as an array as college can offer more than one course.

public class College {
   Course courses[];
}