Covariance and contravariance might seem esoteric, but you'll need these concepts more than ever as the Java language evolves. Get started with type dependency in array types, generic types, and ...

Think you've nailed the basics of Java pattern matching? Keep learning with these Java pattern matching examples involving records, inferred types and generics.

Type inference in Java happens when the JDK’s compiler, rather than the developer, assigns a data-type to a variable. ... As you can see in the following var examples, the left-hand side of the ...