Array of Sockets Java

Question

I\'m creating server and client java applications. I would like to create an array to store my sockets in. I\'m using eclipse, and when I type in this line:

Answer 1

You can outsmart this problem easily, just create a class containing a socket connection, then build an array of this class object.

Build the class:

Class example { Socket con;

The constructor and extra code here ...

}

Then just build the array:

example[] arr=new example[3];

Answer 2

When I run your code I recevie this error message

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - incompatible types: try-with-resources not applicable to variable type
    (java.net.Socket[] cannot be converted to java.lang.AutoCloseable)

I advice you not to use try catch block with resources when you want to define your socket array.

       try (
            your rest of code
        ) { 
    define your array here --->  Socket[] sockets = new Socket[3];
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                out.println(inputLine);
            }
        } catch (IOException e) {
           your rest of code 

Note: Socket class implements Closeable and AutoCloseable , yet array cannot be defined in try block like you tried to do

Answer 3

The resources defined in a try-with-resources block must all be auto-closeable. That's what it's for. Socket[] is not AutoCloseable, so it cannot be defined there. Move the declaration before the try. Ditto for any other resources you get the error on. Don't treat it as a general declaration block. It isn't.

Answer 4

While Socket class itself implements AutoCloseable interface, array of Sockets - does not.

To put it in simple terms: you cannot open or close an array.