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Is there any LinkedTreeMap implementation in java?

is there any LinkedTreeMap implementation available in standard JDK or simple standalone library that support both sorting and insertion order? I found gridsim that has a LinkedTreeMap implementation. But seems it is a big library.

[UPDATE]

I want a Map which sorts elements based on keys which is Integer in my case and also gives me two kinds of Iterator based on:

  1. sorted keys
  2. insertion order
Solution

  • Can you see the LinkedTreeMap of google-gson library?

    This preserve the insertion order.