Explore several approaches to removing all characters before a specified character in a string.

Learn how to convert a two-dimensional array into a one-dimensional, which is commonly known as flattening.

Learn how to find the index of the smallest element in an array.

Apache Commons Configuration can be used to allow us to specify configuration parameters to be loaded at runtime by our application. We look at a few use cases and types of configuration files.

Learn everything you need to know about java.security.UnrecoverableKeyException - what causes it and how to fix it.

Learn how to convert from an int primitive to a short primitive in Java.

Learn how to get the 2’s complement of a number in Java.

Learn how to create a HashMap with a string's character count.

Learn how to handle nulls in ArrayList.addAll().

Learn how to use Comparators with PriorityQueues and how to change the sorting order in such queues.

Learn how to use the Google Guava's ClassToInstanceMap interface and its implementations.

A quick reference guide for changes that appeared in common.util.concurrent package.

A short introduction to Guava's CacheLoader and its usage.

A quick and practical guide to the Bloom filter, a probabilistic data structure, and how to use its implementation in the Guava library.

Learn how to use some very useful mathematical operations available in the Guava Library.

How to use the Guava Cache - from a simple usecase to eviction of elements, refresh and preload of the cache and removal notifications.

In this quick tutorial, we learn how to fix the java.io.EOFException, a special type of IOException.

This article explores perfect numbers and three methods to identify them: brute force, stream-based, and Euclid-Euler theorem.

Explore different methods to find the nth last occurrence of a character within a string using Java.

A guide to Guava's Ordering class, with typical usage examples.