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.

How does the open-closed SOLID principle work in a Java program? Here we show you what this important principle means, and how to implement the open-closed principle in Java.

Google is replacing its implementation of the Java application programming interfaces (APIs) in Android with OpenJDK, the open source version of Oracle’s Java Development Kit (JDK). The news ...