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Java Thread Q&A » Development » iteration 

1. How to multithread collection iteration operating on a predicate?    stackoverflow.com

For sake of abstraction, let's assume that I have a 

Map<Double, Collection<Employee>>
where key is salary threshold. Or for people familiar with Google collections it would be as Multimap I want to do ...

2. Iteration over a list (ConcurrentModificationException)    stackoverflow.com

The following code throws a ConcurrentModificationException: 

for (String word : choices) {
         List<String> choicesCopy = choices;
         ...
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