Codes

[vale karma]

How can i write this codes?

[opaque needle]

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[vale karma]

i wrote this but i can't continue

How will i identify to videoGameList

and the methods

[grave sage]

there are two methods

[vale karma]

yep but i didn't understand how will i identify "videoGameList"

[grave sage]

its a VideoGame[]

[vale karma]

private VideoGame[] videoGameList;

is it?

[grave sage]

its an array yes

[polar tendon]

public class ShoppingSite {
  private String storeName;
  private int videoGameCount;
  private int totalGameStock;
  private VideoGame[] videoGameList = new VideoGame[totalGameStock]; // reference to a VideoGame class somewhere
  
  public ShoppingSite(String storeName) {
    this.storeName = storeName;
  }

  public String getStoreName(){
    return this.storeName;
  }

  public void addVideoGame(VideoGame videoGame){
    videoGameList[this.videoGameCount + 1] = videoGame;
    this.videoGameCount++

    // maybe add check if videoGameCount > totalGamesStock then can't add more videoGame's
  }
}

Think this could work?

This assumes that totalGameStock is the maximum number of games in the store and videoGameCount is how many games are in the stock room

[vale karma]

how can i test "totalgameStock"

when i add the new game it has to be increase

[polar tendon]

Is this a school project?

[vale karma]

nope i wanna make a practice

[polar tendon]

Looking at the error message, there seems to be an error on line 15 of ShoppingSite.java

[vale karma]

it is " videoGameList[this.videoGameCount++] = videoGame;
"

[polar tendon]

So an array is immutable, you can't keep updating the length of videoGameList. Can I see a screenshot of ShoppingSite.java to try and fix the error

I think the error is it needs to be:

[polar tendon]

  videoGameList[this.videoGameCount + 1] = videoGame;

yes this should fix your error ^

[vale karma]

isn't it same already?

[polar tendon]

Also, in your constructor function you need to instantiate what videoGameCount and totalGameStock are, and then move the ```java
new VideoGame[this.totalGameStock];

[polar tendon]

You normally use ++ if you want to add one to the value. It might return the value + 1 but for readability I would say ```java
this.videoGameCount + 1

[vale karma]

like that?

[polar tendon]

You still need to instantiate this in the constructor. I feel as though if you are struggling with this and you aren't doing this as part of education then you should rewatch your fundamentals as it is covered well in the freecodecamp java course (https://www.youtube.com/watch?v=A74TOX803D0) or if you are in education you should wait until you get further or talk to your lecturer

[vale karma]

but how , i already instantiate constructor called " ShoppingSite(String storeName),

wil

will i have to create one more?

[polar tendon]

You need to instantiate all of the variables in there preferably however your class diagram doesn't ask for any other inputs except for a String. As far as I can tell you haven't attempted to do this by yourself and have just copied and pasted what I have given. I recommend you go back to the fundamentals to understand how this all works. I'm not trying to be mean I think this project may just be a bit too advanced for you currently

[vale karma]

yep i got it

u helped me

thank u

[opaque needle]

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[vale karma]

but i have to ask one more thing

as you say " your class diagram doesn't ask for any other inputs except for a String". So, how ahaha

im not asking the code

but how it can be possible

[polar tendon]

I assume there must be a hard coded value for these variables, which would mean they don't need to be in the constructor, however without knowing these values I can't tell you if this is the solution. If I were making this as a practice project I would just include these values in the constructor

Where did you find this diagram? It seems like a fun challenge

[vale karma]

yep my friend gave

actually i wrote the other codes

can i show you

like that

i didn't understand only "addVideoGame

my friend gave me the print

it has to be like this

1m

i did everything actually but i couldn't write the last sentence

[polar tendon]

Right okay, looking at what the output is I would scrap what I told you lol. I would be interested in how your friend designed the videoGameList as it is a list with unknown size so I would use an ArrayList<VideoGame> however the typing is VideoGame[] so you must know how big the videoGameList is?

or I guess you could make videoGameList's size some large number

[vale karma]

yeah actually i can try arraylist

i guess it doesn't matter for him

[vale karma]

i tried and it worked but i guess i have to create methods called "addVideoGame"

[polar tendon]

Show code

[vale karma]

i am trying arraylist now

how it could be?

i created a arraylist and i used ".set" command

[polar tendon]

Instead of using the .set command you can use the .add command to append to the end.

also your videoGameCount is now wrong. to get the total you would need to loop through your videoGameList and get the total of all the VideoGame's getGameStock's()

[vale karma]

oh thank u

[opaque needle]

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[vale karma]

thank u very much for everythin

g

[vale karma]

i will try that (i hope)