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Java Collection Q&A » Set » keySet 

1. Threadsafe way of exposing keySet()    stackoverflow.com

This must be a fairly common occurrence where I have a map and wish to thread-safely expose its key set: 

public MyClass {
  Map<String,String> map = // ...
  public final ...

2. Map.keySet() Query    stackoverflow.com

It is a old code and am debugging it. I have a Map (myMap) with size 2 (for sure). Keys are null and 1. 

SortedSet mySet = new TreeSet();
mySet.addAll(myMap.keySet());
Iterator mySetIterator = mySet.iterator();
while ...
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