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Foreword

Java SE 8 may well represent the largest change ever to the Java language and libraries. Since you’re reading a book called Mastering Lambdas, you probably already know that the biggest new feature is the addition of lambda expressions. Depending on your perspective, this evolution began in 2009 (when Project Lambda was launched), or 2006 (when several proposals were made for adding closures to Java), or 1997 (when inner classes were added), or 1941 (when Alonzo Church published his foundational work on the theory of computing, from which lambda expressions get their name).

However long it took to get here, it’s about time! While it may ...

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