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#java-8 - Questions and answers

3 questions, 1 pages, 20 questions on this page

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5 points

Java 8 - how to convert Map<String, Set<String>> to Map<String, List<String>> using streams?

How to quickly convert Map<String, Set<String>> to Map<String, List<String>> using streams? eg: I don't want the java 7 way, I would like to convert it in one stream.

0 answers

526

0 points

Java 8 - difference between lambda expression and method reference?

What is the difference between lambda expression and method reference in Java?

1 answers

298

4 points

How to iterate over map in java?

I have simple java HashMap from java.util package. eg: What is the best way I can iterate over all keys and values?

0 answers

178430

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