The pattern matching feature in Java lets app developers handle complex data structures such as abstract layers and class hierarchies. Here's how it works.

Get to know the Java persistence standard based on Hibernate and learn how to use JPA to store and manage Java objects in a relational or NoSQL database.

Beginners should find the Introduction to Java online class on Coursera right up their alley. The introductory Java course offered by LearnQuest is part of the Core Java Specialization.

JDBC (Java Database Connectivity) is the Java API that manages connecting to a database, issuing queries and commands, and handling result sets obtained from the database.

Learning Java can help aspiring developers understand the foundations of programming because of the language’s wide usage and functionality.

Here's a quick JDBC with HSQLDB tutorial to get you up and running with Java database connectivity and the popular HyperSQL database.