In Java 9, Interface is getting more enhanced and now more strengthen, Java 9 interface can declare private methods, keeping intact the feature of the default method introduced by Java 8.

Difference between public, private, protected and default in Java Accessibility: anything public is accessible to anywhere , anything private is only accessible in the class they are declared , ...

There is a reason why Java method modifiers exist. If you call public methods internally and don't understand why, your developers could face major class issues.

Java Reflection provides a lot of information about a given class at runtime; you can easily know all its super classes, implemented interfaces, methods, constructors, fields, and so on. But in ...