Because the print() method parameter type is List<String>, this method’s implementation doesn’t have to change. However, ... Evolving the interface in Java 9: Private methods.

Using Java’s String length method. To get the number of characters in a given piece of text, the Java String length() method is all you need. Just make sure the String is not null, and avoid any ...

There is a reason why Java method modifiers exist. If you call public methods internally and don't ... class. If you want to share it with other classes, you will no longer have this access. You could ...

I’ve presented three common ways to use nesting techniques with Java classes and interfaces, and also demonstrated a controversial technique of nesting interfaces with static methods.