title: java: list thread locals?
body: <p>Is there a way to list TheadLocals bound to a thread? Ideally I could access the Thread.threadLocals map, but it is package protected.</p>
  
  <p>The reason I need this is I need to inspect threads as they are returned to a thread pool to ensure the ThreadLocals have been properly cleaned up. Perhaps there is another way to do this?</p>