Learn what the double precision issue is, how it affects code, and how to deal with it.

Compare Java's Double to BigDecimal and learn about their differences.

Explore two approaches in Apache POI to adjusting the column width of Excel spreadsheets.

A quick and practical guide to creating a stream of regex matches.

Explore various methods of merging the contents of two arrays and eliminating the duplicates.

Spring Boot with Graal and virtual threads, sealed pattern matching, Oracle JSON, Java 21, and Problem Details in HTTP APIs.

Discover multiple Java methods for detecting emojis in a string.

Learn about the usage of several libraries, such as Apache POI, Poiji, FastExcel, and JExcelApi, to read and convert data from Excel files into Java objects.

Explore value-based classes and the notion of value types in Java.

Learn about the new sequenced collections from the Java 21 release.

Learn how to add minutes to a time in the string format using the legacy Date API and the Date Time API.

Learn about JVM log forging and techniques to overcome this security concern.

Dive deep into a Java Streams vs. For-Loops comparison.

Learn how to get a two-dimensional array that contains the combined RGB values for every pixel in an image in Java.

A quick and practical guide to finding n most frequent elements in a Java array.

Explore multiple ways to concatenate two or more byte arrays.

Explore several approaches to finding the middle elements of an array in Java.

In this tutorial, we'll take a look at common issues we might encounter when issuing SSL requests.

Discover two approaches for solving the maximum subarray problem using Java.

Explore several String composition techniques and understand the idea behind String interpolation.