Print Array of Objects in BlueJ

Question

For an assignment, I was asked to work on calling a class and creating an array objects, which i did here;

public void DVDArrayObjects() {
    //creates variables
    int i;
    DVDClass[] dvdArray = new DVDClass[5];

    //reference to DVDClass
    for (i = 0; i < 2; i ++) {
        //create new instance of calling the class
            dvdArray[i] = new DVDClass();

        //create new instance of getting the info
            dvdArray[i].getDVDInfo();

        //display
        //System.out.println(dvdArray[i]);
    }
}

Creating the array of objects works fine, but displaying doesn't. it shows the memory allocation when i run it. I'm really stuck as to how to get it to display.

** EDIT **

When i use System.out.println(dvdArray[i].getDVDInfo()); the error void types not allowed in here shows up

** END OF EDIT **

Any help at all would be greatly appreciated.

Your error is because the `getDVDInfo()` doesn't return anything, it's `void` — Sri Harsha Chilakapati, Nov 09 '13 at 14:49
Can't print "nothing"(void). You need your `getDVDInfo()` to `return` something. — Paul Samsotha, Nov 09 '13 at 14:49

Sri Harsha Chilakapati · Accepted Answer · 2013-11-09T14:48:19.677

2

Print the DVD info (assuming that it returns a string).

System.out.println(dvdArray[i].getDVDInfo());

If it doesn't return a string, you need to override the toString() method on the class DVDInfo like this.

@Override
public String toString()
{
    return "Film Name\t: " + filmName +
           "\nFilm Director\t: " + filmDirector +
           "\nRun Time\t: " + runTime +
           "\nLead Actor\t: " + leadActor;
}

Hope this helps.

edited Nov 09 '13 at 14:48

answered Nov 09 '13 at 14:36

Sri Harsha Chilakapati

11,744
6
50
91

getDVDInfo has one integer value in it as well. it calls filmName, filmDirector, runTime, leadActor – Megan Sime Nov 09 '13 at 14:43
@MeganSime Changed to include the example. – Sri Harsha Chilakapati Nov 09 '13 at 14:49

score 1 · Answer 2 · answered Nov 09 '13 at 14:38

1

You need to override the toString() method.

public class DVDCLass {

    @Override
    public String toString(){
        return // whatever you want the output to be
    }
}

answered Nov 09 '13 at 14:38

Paul Samsotha

205,037
37
486
720

score 0 · Answer 3 · answered Nov 09 '13 at 14:39

0

Override toString() method in your DVDClass class

do like below

class DVDClass{

     public String toString(){
          return // whatever you want the output to be
     }
}

answered Nov 09 '13 at 14:39

Prabhakaran Ramaswamy

25,706
10
57
64

Print Array of Objects in BlueJ

3 Answers3