Learn how to find the words in mixed case strings using regular expressions, and how to convert them into sentences or titles

Learn two approaches to start two threads simultaneously: using CountDownLatch and CyclicBarrier

Learn how to use the four types of regex lookaround to solve some difficult cases of matching strings with regex.

Learn several approaches for serializing Java objects using third-party libraries or core Java's built-in serialization API.

Learn what causes the compiler error "code too large", along with situations where we might encounter it and what we can do to fix it.

Learn how to use Collector.groupingBy() to group the equal objects.

Transforming a String into an Optional is simple in Java 8. Is going from an empty String to an empty Optional just as simple?

Learn how to work with multi-dimensional arrays in Java

Learn how the JVM optimizes the amount of memory allocated to String storage in the Java String Pool.

A quick and practical overview of grouping Javax validation constraints.

An overview of clean coding practices in Java.

Take a look at how to get a Date value without the time in Java