Java 8 introduced a lot of long-awaited improvements to the Java language:

• Lambdas
• Simplifies Date/Time APIs
• Concurrency APIs
• Optionals
• and . . . Streams

Since our topic today is Streams, we must also discuss the changes to the Java 8 Collections APIs which were made to support Streams. This example project demonstrates a few of the features of the new APIs using (I hope!) simple and concise code.

This example starts with a list of objects/primitives and performs operations using the new Streams API.

• simpleFilterListExample() - Filter a list of strings using streams and lambda expressions
• parallelFilterListExample() - When you need to filter/sort a LARGE amount of data and want to take advantage of multiple CPU cores
• genesisWordCount() - Given a sample of text from Genesis, tally word usages and return top 5 using parallel streams