Before Java 8, a Java application consisted of at least one class that declared a main() entry-point method. Starting with Java 8, you can accomplish this task with an interface. For example ...

Rather than implementing a method in a functional interface, a method reference simply points to an existing method ... parameter is a powerful feature of Java’s lambda expressions and method ...

While it seems so basic that it wouldn't require a mention, there's a basic and often violated software design principle pertaining to Java method modifiers that is in need of explanation. A public ...

That’s a pretty drastic move. Finalize is defined right there in the Object class, right at the top of the Java hierarchy, more exposed than a public variable. But the semantics of the finalize method ...