Here's what I've written (so far):

Guava CharMatcher

Use the Guava CharMatcher to work with Strings – remove special chars, validate, trim, collapse, replace and count among other super useful APIs.

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Spring Profiles

How to define and use Profiles in Spring. The 4 ways to enable profiles and their precedence. And a real-world example using profiles.

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Guava – Maps

Working with the Guava Map support to create immutable, sorted, bi and multi maps, as well as other useful map implementations.

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