Linked List - Iterative add method - No getters and setters

Question

Hello I have an assignement which is to create an iterative add method add(Student s) in the adequate class without getters and setters but I may create " auxilliary method" (not sure what it means) and attributs.

I've tried to make the method add in Group class :

public void add(Student s) {
    if ( head == null) {
        head = new Student(...); 
        // Struggling because Student constructor requires a String not a Student

    }
}

I could've done it by creating a getter for the name, like this head = new Student(s.getName()); but I'm not allowed to use getters and setters, what can I do ? thank you

public class Student {

    private final String name;
    private int grade;
    private Student next;

    private static int counter = 0;

    public Student(String name) {
        this.name = name;
        this.grade = 0;
    }

}

public class Group {

    private int groupnumber;
    private Student head;

    // Empty list & group number by default is 2
    public Groupe() {
        this.head = null;
        this.groupnumber = 2;
    }
}

kerner1000 · Accepted Answer · 2018-03-04 21:10:27Z

1

You can use a copy constructor. Like new Student(student).

public class Student {

    private final String name;
    private int grade;
    private Student next;

    private static int counter = 0;

    public Student(Student template) {
        this.name = template.name;
        this.grade = template.grade;
    }

}

Or, maybe more simple:

public void add(Student s) {
    if ( head == null) {
        head = s; 
    }
}

answered Mar 4, 2018 at 21:10

kerner1000

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