Learn how to escape special characters in Java Regular Expressions.

Learn how to use the Java Text Blocks feature, incorporated as a standard feature since JDK 15.

Learn how to do Base64 encoding and decoding of a PDF file using Java 8 and Apache Commons Codec.

Learn the basics of the Java native keywords and methods.

Learn several algorithms for checking whether a list is sorted in Java.

Learn how leverage OpenCV with Java

Introduction In this article, I will contemplate the testing of private methods in unit tests. After that, I will propose a way or pattern to do it, if

Learn about approaches for testing System.out.println.

Learn how to list all of the available Redis keys

Learn how one of Java's most common errors - StackOverflowError - occurs, and how to resolve it.

Learn about primitive collections in Eclipse collections, performance and how to interact with them.

Learn about the constructor return type in Java

We'll discuss what "unchecked cast” compiler warning means, why we're warned, and how to solve the problem

Learn how to change a String by inserting a new character at an arbitrary position.

A quick example and explanation of the lastIndexOf() API of the standard String class in Java.

How to rename or move a file in Java, using JDK6, JDK7, Guava or Apache Commons.

Learn how to use the toMap() method of the Collectors class.

Learn how to copy an array in Java, with examples of various methods.