object attaching - different approach

[Techno]

this thread is similar to the other thread i posted - its not a duplicate

i wanted to start this new one as a fresh one and not to make things complicated.

so here it goes


i have made objects, found an object and wish to assign the found object (mentee) to an existing "experienced" object (mentor)

i have made a method in the Mentor Class to addMentee(Programmer aMentee)


it also has an arraylist (the Mentor class has it)

what i wanna know is how exactly do I attach a Mentor to a Mentee from the Main class where all the checking is happening (like age check, prog lang check etc...)


and also how would I make a constructor for the Mentor class if we are dealing with object passing (not object creation)

thanks

[Dillinger4]

Just use aggregation.

class Mentor{

  private Mentee mentee;
 
  public Mentor(Mentee mentee){
   this.mentee = mentee;
  }

In the main method create a new instance of the mentee class then pass the mentee refrence to the mentor class via the Mentor constructor.

[Techno]

ty for that

i get an error

Mentor.java:37: cannot resolve symbol
symbol : class Mentee
location: class Mentor
public Mentor(Mentee mentee)
^
Mentor.java:114: cannot resolve symbol
symbol : class Mentee
location: class Mentor
private Mentee mentee;
^
Mentor.java:38: cannot resolve symbol
symbol : constructor Programmer ()
location: class Programmer
{
^
3 errors




code for Mentor:

     public Mentor(Mentee mentee)
     {
     	this.mentee = mentee;
     	theMentorings = new ArrayList();  
        
     }    // method: Mentor

//atribs

private Mentee mentee;

[edit]changed to Mentor mentee and works but then complains about the Programmer class :-/

Mentor.java:38: cannot resolve symbol
symbol  : constructor Programmer ()
location: class Programmer
     {
     ^
1 error

[/edit]

[Dillinger4]

Whats the programmer class? Is that the class that contains the main method?

[Techno]

no ive attached the files

its better looked at than to explain each bit. hope u dont mind

i just wanna be able to assign a Mentee to a Mentor. thats all (easily since im a newbie)

Application - the menu and stuff but created several objects for testing

SoftwareHouse - really the main program

Employee - abstract class

Programmer - Programmer class

Mentor - same as Programmer but allows to add/remove a Mentor from a Mentee

[CornedBee]

I posted some wonderful code in the other thread, and you didn't even comment on it.

[Techno]

it is lovely but its a bit too complicated for me you see to understand

[CornedBee]

It is simpler than any of the approaches I've seen from you so far.

If you don't understand a bit, don't hesitate to ask. But in the other thread, so I have the code at hand.

[Techno]

ok well kinda got it all working now but it doesnt seem to add the mentee!!!!

asked for help in the class and they have given me help but for some reason it just doesnt add it.

ive re attached the code.

look in the addMenteeMentor(..) method in the SoftwareHouse

it also wont display the Mentor's mentee's details - guessing because its not added to the arraylist


thanks