What you’ll learn in this Java tutorial About static classes in Java About the three types of inner classes: Non-static member classes Local classes Anonymous classes ...

The Java Tutorial goes on to list bullets for when an abstract class should be considered and for when an interface should be considered. Unsurprisingly, these are derived from the previously ...

Traditional Java 8 Predicate example While the Java 8 Predicate is a functional interface, there's nothing to stop a developer from using it in a traditional manner. Here's a Java Predicate example ...

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may ...

When the class is executed, the result is the text string lambda-tutorial.txt written to the console. Example UnaryOperator Lambda expression If you implement the UnaryOperator interface with a ...