Java - ArrayLists

Question

I created a client object and I want to create an array list that stores the information client objects.

Code location: Client.java

ArrayList<Client> ClientInfo = new ArrayList<Client>();

public ArrayList<Client> getClientInfo() {
    return ClientInfo;
}

Code Location: Client Handling.java

c.setClientId(Client.getClientInfo().size());

    Client.getClientInfo().add(c);

Error at ClientHandling.java:

http://vvcap.net/db/ncilHaCfjUY6JeszCnWJ.png

http://vvcap.net/db/ySzyKvM2qT9mu7pqBCmZ.png

Any ideas?

EDIT: MY CLIENT HANDLING CLASS IS NOT STATIC! That is what I am having a problem with. it is not static, and for some reason it is telling me it is static.

I think you really need to read some Java tutorials first.

Alvin Wong
– Alvin Wong

2013-01-19 12:02:01 +00:00
Commented Jan 19, 2013 at 12:02 — Alvin Wong
– Alvin Wong, Commented Jan 19, 2013 at 12:02
Cool story bro, changed my java skills.

Nik
– Nik

2013-01-19 12:27:13 +00:00
Commented Jan 19, 2013 at 12:27 — Nik
– Nik, Commented Jan 19, 2013 at 12:27

fonZ · Accepted Answer · 2013-01-19 12:07:36Z

2

You use the wrong syntax. In Java class names begin with a uppercase letter, variable names begin with lowercase letter. If you use Client as a variable name and Client is also a class you have a problem because Client.getClientInfo() is a static call because Client is a class.

So your code should look like this:

ArrayList<Client> clientInfo = new ArrayList<Client>();

public ArrayList<Client> getClientInfo() {
    return clientInfo;
}

Code Location: Client Handling.java

c.setClientId(client.getClientInfo().size());

client.getClientInfo().add(c);

And finally, where do you create instances of c and client?

answered Jan 19, 2013 at 12:07

fonZ

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Comments

PermGenError · Accepted Answer · 2013-01-19 12:02:26Z

1

getClientInfo() is a non-static method and you are trying to call it from a static method. you need to create an instance of the class where getClientInfo() is in and make a call on that instance.

public static void someMethod() {
Client c=new Client();
c.setClientId(c.getClientInfo().size());
    c.getClientInfo().add(c);
}

answered Jan 19, 2013 at 12:02

PermGenError

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1 Comment

Nik Over a year ago

When i make the 'ClientInfo' Static, it gives me an error with the return statement. IT IS NOT STATIC, i can past ethe whole code for you to see. If i do ctrl + F, and look for static, i end up with nothing.

GeorgeVremescu · Accepted Answer · 2013-01-19 12:02:09Z

0

Client is the class. You must make the getClientInfo() function to be static. And while you're at it, also make the ClientInfo static, too.

answered Jan 19, 2013 at 12:02

GeorgeVremescu

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