Question

The idea is to add students to an arraylist, work out the number of students who have passed, and return that number.
I think I’m nearly there, as the code works, but it always returns the same value for the amount in the array list – and obviously, that is incorrect.
I have been doing this for hours now, and I can’t see what the missing statement within the if statement is to finish it off! I would be soo grateful for this!

import java.util.ArrayList;

class Course
{
    private ArrayList<Student> people = new ArrayList<Student>();

    //Add a students mark
    public void add( Student s )
    {
        people.add(s);
    }
    //Return the number of students who passed (mark>= 40)

    public int pass()
    {
        int size = people.size();
        int i = 0;
        int result = 0;


        for (i = 0; i < size; i++)
        {   
            Student s = people.get(i);

            if(s.getMark() >= 40);
            {
               // what's here?
            }
            return result;
        }
    }
}

Answer 1

Remove this statement inside pass method

ArrayList people = new ArrayList();

Because of this statement, when pass method is called, your local variable hides instance variable.