This tutorial explains different ways to check if the first character of a string is a number in Java. It covers using charAt(), Character.isDigit(), Pattern class, and matches() method. It also demonstrates how to use Guava's CharMatcher utility class to…

Java 20, adaptive GC for Quarkus, JFR event streaming, Java threading primitives, maintainable software, and HTTP stats codes!

Java Module is a feature introduced in Java 9 to improve the maintainability, scalability, and security of Java applications. A module is a collection of

 Google Cloud EventArc provides a simple way to act on events generated by a variety of Google Cloud Services. Consider an example. When a Cloud

A Garbage Collector (GC) is a program or mechanism that automatically frees up memory space in a computer's memory (RAM) that is no longer being used by

Code review solution tools are software applications that help developers automate and streamline the code review process. These tools analyze source code

Pattern matching and records patterns for Java 21, generational ZGC, Spring transactions, JSON views, low latency queues, and naming!

Scoped values is a new API in Java 20 that enables developers to store and share immutable data within and across threads. We look at how to use it and how it works.

Learn common pitfalls when comparing the contents of two arrays and explore the correct way to compare two byte arrays.

Understand the scenarios when CompletableFuture is non-blocking and when it’s not.

Learn various methods for finding the index of an array element using both Java's built-in APIs and a third-party library.

Learn how to remove punctuation from a string using the standard String.replaceAll() method.

Explore three different approaches to printing a string with quotes (") around it.

Buildpacks provide a solution for developers who are tired of writing lengthy Dockerfiles that describe every step required to build a container image.

Apache Kafka is a distributed streaming platform that was originally developed by LinkedIn and later open-sourced under the Apache Software Foundation. It

This article provides several ways of converting a PrintStream to a String in Java.The approaches include using ByteArrayOutputStream, a custom output stream, and Apache Commons IO.

Unnamed methods in Java, Hibernate 6 migration, async-profiler, generative AI and jobs, and monoliths are not dinosaurs!

Learn how to read multiple inputs on the same line using the Scanner class.

Learn how to store the input from a Scanner into an array with three different scenarios and examples.

Learn how records provide us with a default implementation of equals() and hashCode() methods.

Learn how to use FileReader and BufferedReader and the differences between them.