If we have a collection of elements we may wish to find the frequency of the different values. How to do this efficiently depends on the type of element and how many different values there may be.

We may experience the IncompatibleClassChangeError when using extremely incompatible versions of libraries. We look at how this error occurs and how to fix it.

Explore the performance differences between two basic Java classes for writing files: FileWriter and BufferedWriter.

Quick tutorial on how to read the last N lines from a file using different standard Java packages and the Apache Commons IO library.

This tutorial explains how to avoid the UnsupportedTemporalTypeException in Java's Date-Time API, specifically when converting a LocalDateTime to an Instant.

Explore the differences between reading a file from the classpath using getResourceAsStream() and reading a file from the filesystem using Files.newInputStream().

Learn how to find the maximal and minimal date in a list of date objects using Streams.

In this article, we will get familiar with JUnit 5 functional interfaces. JUnit 5 significantly advanced from its predecessors. Features like functional interfaces can greatly simplify our work once we grasp their functionality.

Remove Byte Order Mark characters from file: Learn how to remove Byte Order Mark characters from files in Java using different methods.

Unleash the power of Java for Machine Learning! Dive into Deeplearning4j and H2O, two powerful libraries that equip Java developers

Interested to learn more about optional arraylist conversion? Then check out our detailed example.

Discover the difference between Hibernate load() and get() methods with detailed explanations and code examples.

Rest CompletableFuture several calls: Learn how to use CompletableFuture in Java to make multiple parallel REST calls.

Learn how to clear the Java Scanner buffer, ensuring consistent and predictable input processing in your programs.

Java keystore jks list private keys: Learn how to list private keys from a keystore using command-line tools and Java with detailed examples.

Maven dependency graph: Learn about Maven dependency graphs, visualizing project dependencies, and resolving conflicts effectively.

Explore the differences between JUnit vs Mockito, including detailed explanations and code examples to understand their unique roles.

Spring Batch JSON Reader Writer Example: Learn to read and write JSON files using Spring Batch with Jackson.

Java array second smallest number: Discover how to find the second smallest number in a Java array. Learn techniques and code examples.

A quick and practical guide to handling ClassCastExceptions when working with BigInteger and Integer.