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.

Java Database Connectivity (JDBC) is an application program interface (API) packaged with the Java SE edition that makes it possible to standardize and simplify the process of connecting Java ...

Finally, note that the previous article in the “What is: Java” series introduced the Java Platform Module System, which offers a different approach to the same challenge of Java modularity.