Explore the problem of finding the closest number to zero within a Java array.

Quick tutorial on how to store and retrieve BLOB data using Java Database Connectivity (JDBC).

Learn how run Java code through Maven with JVM arguments.

Learn how to pass a method as a parameter to another method using functional programming concepts: lambda expressions, method references, and functional interfaces.

Learn how to avoid inserting duplicate values when using ArrayList in Java.

Learn how to remove digits from a String in Java.

Explore various ways to find the mode of integers in an array along with the methods' advantages in different scenarios.

Explore two approaches to converting an int to an unsigned byte in Java.

Learn how to search an array to find the index of the maximum element in Java.

A quick and practical guide to JetCache.

A tutorial on Coordinated Restore at Checkpoint (CRaC), an OpenJDK project that allows us to start Java programs with a shorter time to the first transaction.

Learn how to convert from Timestamp to Calendar in Java.

Learn how to split a String based on the last instance of a character in Java.

Learn how to insert an emoji into a Java string, covering various approaches, considerations, and ranges of emojis in Unicode.

Introductory tutorial to BitcoinJ - creating a wallet, funding the wallet, and sending some coins other wallets.

Explore three different approaches to checking the write permission of a directory in Java.

Learn how to convert a Java Map to a MultiValueMap that holds multiple values against a single key.

Learn how using MapStruct and Lombok together can help you write less boilerplate.

Explore multiple ways to convert exponential values into the standard number format.

Understand why instantiating a generic type isn’t as straightforward as instantiating a class and explore several ways to create an instance of it.