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Dec 14th, 2009

Creating Object Array and then printing

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I am creating a Video class, then creating objects to place into an array. Then I want to print the contents of the array:

java Syntax (Toggle Plain Text)
public class Video {
 
    String videoTitle;
    int videoRating;
 
    public Video (String pVideoTitle, int pVideoRating){
        videoTitle = pVideoTitle;
        videoRating = pVideoRating;
    }
}
public class Video {

    String videoTitle;
    int videoRating;

    public Video (String pVideoTitle, int pVideoRating){
        videoTitle = pVideoTitle;
        videoRating = pVideoRating;
    }
}

java Syntax (Toggle Plain Text)
public class VideoStore {
 
    public VideoStore(){
        run();
    }
    private void run(){
        buildArray();
        printArray();
    }
    private void buildArray(){
        Video[] inventory = new Video[5];
        inventory[0] = new Video ("Meet the Fockers", 5);
        inventory[1] = new Video ("Blade" , 3);
        inventory[2] = new Video ("Spiderman 2 " , 4);
        inventory[3] = new Video ("Finding Nemo" , 3);
        inventory[4] = new Video ("Star Wars II" , 1);
    }
    private void printArray(inventory[]){
        for (int i = 0; i < inventory.length; i++){
        System.out.println(inventory[i]);
        }
    }
    public static void main(String[] args) {
      new VideoStore();
    }
}
public class VideoStore {

    public VideoStore(){
        run();
    }
    private void run(){
        buildArray();
        printArray();
    }
    private void buildArray(){
        Video[] inventory = new Video[5];
        inventory[0] = new Video ("Meet the Fockers", 5);
        inventory[1] = new Video ("Blade" , 3);
        inventory[2] = new Video ("Spiderman 2 " , 4);
        inventory[3] = new Video ("Finding Nemo" , 3);
        inventory[4] = new Video ("Star Wars II" , 1);
    }
    private void printArray(inventory[]){
        for (int i = 0; i < inventory.length; i++){
        System.out.println(inventory[i]);
        }
    }
    public static void main(String[] args) {
      new VideoStore();
    }
}

I am getting an error in the printArray method. It does not like how I reference the inventory array.

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AZSooner

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since Dec 2009

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Dec 14th, 2009

Re: Creating Object Array and then printing

It doesn't like the way you reference the inventory array because in your method signature you don't properly state what the parameter is.

Your code:

Java Syntax (Toggle Plain Text)
private void printArray(inventory[]){
for (int i = 0; i < inventory.length; i++){
System.out.println(inventory[i]);
}
}
private void printArray(inventory[]){
for (int i = 0; i < inventory.length; i++){
System.out.println(inventory[i]);
}
}

What it should be:

Java Syntax (Toggle Plain Text)
private void printArray(Video[] inventory){
for (int i = 0; i < inventory.length; i++){
System.out.println(inventory[i]);
}
}
private void printArray(Video[] inventory){
for (int i = 0; i < inventory.length; i++){
System.out.println(inventory[i]);
}
}

Does that help?
-Michael

Mikeyp926

Reputation Points: 11

Solved Threads: 7

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since Oct 2009

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Dec 14th, 2009

Re: Creating Object Array and then printing

Click to Expand / Collapse Quote originally posted by Mikeyp926 ...

It doesn't like the way you reference the inventory array because in your method signature you don't properly state what the parameter is.

Your code:
Java Syntax (Toggle Plain Text)
private void printArray(inventory[]){
for (int i = 0; i < inventory.length; i++){
System.out.println(inventory[i]);
}
}
private void printArray(inventory[]){ for (int i = 0; i < inventory.length; i++){ System.out.println(inventory[i]); } }
What it should be:
Java Syntax (Toggle Plain Text)
private void printArray(Video[] inventory){
for (int i = 0; i < inventory.length; i++){
System.out.println(inventory[i]);
}
}
private void printArray(Video[] inventory){ for (int i = 0; i < inventory.length; i++){ System.out.println(inventory[i]); } }
Does that help?
-Michael

Yes, that does help. Wasn't sure how to handle an arrary as a parameter (not as straight forward as an int or String)

AZSooner

Reputation Points: 10

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Dec 14th, 2009

Re: Creating Object Array and then printing

I have changed the buildArray method to the below, as I realized that I shouldn't have a void in the method since I have an output. But I am having trouble with the return.

java Syntax (Toggle Plain Text)
private buildArray(){
Video[] inventory = new Video[5];
inventory[0] = new Video ("Meet the Fockers", 5);
inventory[1] = new Video ("Blade" , 3);
inventory[2] = new Video ("Spiderman 2 " , 4);
inventory[3] = new Video ("Finding Nemo" , 3);
inventory[4] = new Video ("Star Wars II" , 1);
return Video [] inventory;
}
private buildArray(){
Video[] inventory = new Video[5];
inventory[0] = new Video ("Meet the Fockers", 5);
inventory[1] = new Video ("Blade" , 3);
inventory[2] = new Video ("Spiderman 2 " , 4);
inventory[3] = new Video ("Finding Nemo" , 3);
inventory[4] = new Video ("Star Wars II" , 1);
return Video [] inventory;
}

AZSooner

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since Dec 2009

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Dec 14th, 2009

Re: Creating Object Array and then printing

Ok, I think I see what you are trying to do. I would recommend that you leave the method returning void, and made your array a member variable of your class. Does that make sense? You won't actually return anything from your buildArray method, but you would create the array that is stored as a member variable and add items to it. You'll have to change the structure of your code a little bit, but it shouldn't be too much work.

-Michael

Mikeyp926

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