%t always returns "main"

[Da...@smed.com]

Hi. Pardon the stupid question: I can't seem to make the %t (ThreadName)
field work in PatternLayout. It appears to print "main" even if I make the
logging call from a thread with a different name.

Here is my code

// my test logging class
public class PrototypeTest {

  public static void main(String args[]) {
    LogThread lt = new LogThread("My_new_thread");
    lt.run();
  }
}

class LogThread extends Thread {

  LogThread(String name) {
    super(name);
  }

  public void run() {
    DOMConfigurator.configureAndWatch("local.xml", 2000);
    Logger root = Logger.getRootLogger();
    root.error("foo");
  }
}

local.xml is trivial. It attaches a ConsoleAppender to the root, and the
Layout is the default (which contains %t).

Even though I spawned a new thread with the name "My_new_thread", Log4j
says the thread is "main". If I do this.getName() inside run(), it returns
the proper name.

I think if %t just didn't work, people would have noticed, so maybe someone
can point out the flaw in my code.

Thank you

Daniel Hannum




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