Learn when to use a List and when to use a Stream with Sping Data.

Learn several ways to determine if an object or a class implements a specific interface.

Learn a few different ways to check if a given Integer instance's value is null or zero.

Learn a few ways to multiply BigDecimal by an Integer.

Learn about structured concurrency capabilities in Java 19.

Learn how to eliminate manual data setup in tests by auto-generating the data using Instancio.

Learn about the different memory types in the Java Virtual Machine (JVM) and understand the reasons for some common memory-related errors.

Learn about the Java list interface, including core functions and concrete implementations.

Learn different ways for using a Stream as an Iterable.

Learn the alternatives when we need to initialize an ArrayList with null or 0 values.

Learn different techniques to extract the first embedded integer from a String.

Learn how to compare a String to an enum constant through examples.

A quick and practical guide to callback functions in Java.

Learn about Stream.of() and IntStream.range() and learn about certain operations that may turn a Stream from "lazy" to "eager".

Introduction In a previous article, I talked about how serialization and file I/O performance was improved in JDK 21 thanks to the use

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There are many ways available to run JUnit tests, from the IDE, build tool, or development modes. To process and use the test results, however, one has to

Explore calculating the absolute difference between two integers.

Learn two different ways of reading PDF files in Java using the popular Apache PDFBox and iText libraries.

Learn how to convert a hex color code to an equivalent RGB value in Java.

Faster Image IO in Java 21, enhanced escape analysis, type-safe stream API queries, scalable media ML, and efficient one-on-ones!