ThreadLocal as an Enum - I'm not afraid to admit it!

Well, as disturbing as it might be, I am not afraid to at least admit it: I did not know about the elegance of the following construct:

public enum TLData
{
INSTANCE;
private final ThreadLocal<String> myData
             = new ThreadLocal<String>();
public String getMyData()
{
  return myData.get();
}
public void setMyData(final String myData)
{
  this.myData.set(myData);
}
}

Since you are using an Enum, nobody can create new members from outside, you don't have to care about privatizing any methods and you can access it as easy as:

public class myClass
{
public void myMethod()
{

  /**
     * setting the data
     */
  TLData.INSTANCE.setMyData("some data");

  /**
     * getting the data
     */
  String myData = TLData.INSTANCE.getMyData();
}

}

Isn't that fancy? I had to admit I never thought of it myself. A colleague of mine had to put it under my nose.