Quick Java LinkedList problem

Basically I'm rather new to Java and I have a problem with understanding a line and getting it to work.

Heres the line of code:

LinkedList<ClientWorkers> clients = SingletonClients.getClients();

Heres the procedure its in:

ClientWorker(Socket client, JTextArea textArea) {
        this.client = client;
        this.textArea = textArea;  

        String line = in.readLine();
        LinkedList<ClientWorkers> clients = SingletonClients.getClients();
        for(int i = 0; i < clients.size(); i++) {
            ClientWorker c = clients.get(i);
            //The client doesn't need to get it's own data back.
            if(c == this){
                continue;
            }
            c.writeString(line);
        }

    }

The errors it's throwing are:

SocketThrdServer.java:20: cannot find symbol 
symbol  : class LinkedList
location: class ClientWorker
        LinkedList<ClientWorker> clients = SingletonClients.getClients();         
        ^
SocketThrdServer.java:20: cannot find symbol 
symbol  : variable
SingletonClients location: class ClientWorker
        LinkedList<ClientWorker> clients = SingletonClients.getClients();

Does anyone have any idea how I can get it sorted? I'm assuming the LinkedList is being defined wron开发者_如何学运维g and SingletonClients isn't being defined at all but I'm not sure what to define them as in this context?

Thanks in advance!

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You need to import java.util.LinkedList; at the beginning of the java file if you want to use LinkedList without its fully qualified name (i.e. if you want to be able to say "LinkedList" instead of "java.util.LinkedList").

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In the line

LinkedList<ClientWorkers> clients = SingletonClients.getClients();

you've written ClientWorkers instead of ClientWorker. This is an error. It should be:

LinkedList<ClientWorker> clients = SingletonClients.getClients();

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sounds like a classpath problem, although LinkdList belongs to the java.util package so it is always available. I suggest that you check the import statements at the top of your class file to see if you are using the correct LinkedList class