The example in Figure 1 illustrates single inheritance in which a child category inherits state and behaviors from one immediate parent category. ... How to use the extends keyword in Java.

How to use Java’s var keyword Packaged as part of the 2018 version 10 release, the Java var reserved word introduced type inference to the strongly typed Java programming language. Type inference in ...

Using the var keyword further streamlines the code and makes it more readable, especially with complex nesting. Pattern matching with type inference. In the above example, we have used nested record ...