Need Help! How can I......

[Elvis Ve]

I have created these two classes, but now I find out I cant use inheritance, how can i do this without inheritance, like how do i pass the Student class to the Undergraduate class?

class Student
{
String lastName,firstName;
double GPA;

Student(String lname, String fname)
{
lastName = lname;
firstName =fname;
}

Student(String lname, String fname,double gpa)
{
this(lname,fname);
GPA = gpa;
}

String getLname()
{
return lastName;
}

String getFname()
{
return firstName;
}

double getGpa()
{
return GPA;
}


}

class Undergraduate extends Student
{
Undergraduate(String lname, String fname)
{
super(lname,fname);
}

Undergraduate(String lname, String fname, double GPA)
{
super(lname, fname, GPA);
}

double getGPA()
{
return super.getGpa();
}

String getFName()
{
return super.getFname();
}

String getLname()
{
return super.getLname();
}
} :roll:

[Ben Buchli]

why cant you use inheritance?? is it a requirement for the assignment?

[Elvis Ve]

yeah, its a requirment we have to use composition i guess, he said to pass Student as an object in the constructor for Undergraduate but thats what I dont know how to do, can someone please help, thats all i need to finish the program. thanks

[Elvis Ve]

anybody.......

[Ben Buchli]

you simply write the constructor of the undergrad class so that it accepts a Student object. eg.
Undergraduate( Student student ){
s = student; //s is a data member of your Undergraduate class
}

now you can reference to Student by using
s.getLName() or whatever.

it doesnt make sense not to use inheritance here, though...

[Gregg Bolinger]

public ClassA
{
    public ClassA()
    {
        ClassB classB = new ClassB(this);
     }
 
}

------------------

public class ClassB
{
    public ClassB(ClassA classA) { }
}

[Elvis Ve]

thanks a lot I understand better now, I know it dosent make sense not to use inheritance but I got one of those teachers that make u go back to class and object basics