March 2019
Intermediate to advanced
242 pages
6h 21m
English
Content preview from Java 11 and 12 – New Features
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Adding annotations to lambda parameters
You can use annotations with lambda parameters if you define them with either explicit data types or by using the reserved type var. Annotations could be used to mark null or non-null lambda parameters. Here's an example:
(@Nullable var x, @Nonnull Integer y) -> x + y;
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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