InfoWorld

When to use abstract classes vs. interfaces in Java

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs. Abstract classes and ...
InfoWorld

Abstract class versus interface in the JDK 8 era

In The new Java 8 Date and Time API: An interview with Stephen Colebourne, Stephen Colebourne tells Hartmut Schlosser, “I think the most important language change isn’t lambdas, but static and default ...
InfoQ

Java Feature Spotlight: Sealed Classes

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Cory Benfield discusses the evolution of ...
Ars Technica

Java - Can an interface define a class?

Obviously that doesn't compile, but I hate to make a file FooType.java with just the 5 lines above in it. Obviously that doesn't compile, but I hate to make a file ...