Re: Problem with Threads

Lew <>
Mon, 22 Jan 2007 18:28:32 -0500
Damo wrote:
 > Hi,
 > I'm trying to write a program using Threads. I want to pass a value
 > into the run() method of the Thread and I want to return an ArrayList
 > from the run method. I'm passing the value in via the constructor of
 > the threaded class and then using a getValue() method in the the run()
 > method to acces the value passed in
 > To retrieve the ArrayList I've declared it as an instance variable, and
 > in the run() method I'm adding to the ArrayList. Then I have a
 > getList() method to get the populated List.
 > I start the Thread like this:
 > Thread t = new Thread(parameter); //parameter is the value I'm
 > passing in.

Is "parameter" a String or a Runnable? Because Thread single-argument
constructors only exist for those types.

 > t.start();
 > list = t.getList(); // This is the method I created to retrieve the
 > populated list

Have you actually tried running this code exactly as you presented it to us?
Doesn't the getList() call give you a compiler error?

- Lew

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