Are you an intermediate or senior Java developer looking to accelerate your career, build a powerful reputation, and attract high-quality job interviews? The secret might not be in writing more code, but in sharing your knowledge. Public speaking can transform you from just another developer into a recognized expert in the field. In this in-depth guide, Java Champion Rafael del Nero walks you through the exact strategy he used to go from a developer to an international conference speaker. Learn how giving talks can build immense trust, make you a reference in the community, and open doors to career opportunities you never thought possible. This session is packed with actionable advice, frameworks, and real-world insights, moving beyond generic tips to give you a complete roadmap for success. 🕒 TIMESTAMPS: 00:00 - Why Giving Talks is a Career Game-Changer 01:53 - The Strategy: How to Start Small and Build Confidence 03:45...

Get started with Java streams, including how to create streams from Java collections, the mechanics of a stream pipeline, examples of functional programming with Java streams, and more.

Live every Tuesday at 10 PM London time For intermediate and senior Java developers who want to work on a stress-free job Earning Top Salaries <a href="#formancor"> REGISTER FOR FREE </a> Sign up to be notified about the next Live class. <img width="480" height="400" src="https://javachallengers.com/wp-content/uploads/2025/04/ExpertRafael-5.webp" alt="" srcset="https://javachallengers.com/wp-content/uploads/2025/04/ExpertRafael-5.webp 480w, https://javachallengers.com/wp-content/uploads/2025/04/ExpertRafael-5-300x250.webp 300w" sizes="(max-width: 480px) 100vw, 480px" /> […]

Feeling rusty on algorithms for your next Java coding interview? This live session is for intermediate and senior developers who want to master the strategy to pass. We cover the essential mindset, high-yield coding patterns, and the communication techniques that truly signal seniority to interviewers. Stop just grinding problems and start practicing with a deliberate framework for success. 🕒 TIMESTAMPS: 00:00 - The Reality of Modern Coding Interviews 05:30 - The Interview Philosophy: Playing the Game 07:45 - The #1 Mistake to Avoid (Instant Rejection) 10:10 - The 5-Step Problem-Solving Framework 15:00 - Core Data Structures & Algorithms You MUST Know 19:05 - Essential Java Knowledge for Interviews 22:40 - High-Yield Coding Patterns (Two Pointers, Sliding Window, etc.) 25:15 - Thinking Out Loud: The Rubber Duck Technique 34:00 - Senior Signals: Discussing Trade-offs & Complexity 37:20 - Using Mock Interviews & a "Gotcha Log" 40:00 - Final Q&A and Resources...

➡️ Are you an intermediate or senior Java developer feeling stuck in your career? Do you spend hours watching tutorials only to feel like you're not making real progress? This is a common trap known as "tutorial hell," and it prevents talented developers from reaching their full potential. What if there was a proven method to break through that plateau and join the top 1% of software engineers? The secret isn't just more hours—it's a specific learning methodology called Deliberate Practice. This is the technique used by elite performers worldwide to achieve mastery, and in this video, I'll show you exactly how to apply it to your Java career. Stop wasting time with random, passive learning. Start practicing with purpose to accelerate your journey from a good developer to a great one. 🕒 TIMESTAMPS / CHAPTERS: 0:00 - The Problem: Why Most Developers Learn the Wrong Way 1:21 - What...

For intermediate and senior Java developers who want to work on international jobs Earning Top Salaries <img width="1024" height="768" src="https://javachallengers.com/wp-content/uploads/2025/08/3D-book-1024x768.png" alt="" srcset="https://javachallengers.com/wp-content/uploads/2025/08/3D-book-1024x768.png 1024w, https://javachallengers.com/wp-content/uploads/2025/08/3D-book-300x225.png 300w, https://javachallengers.com/wp-content/uploads/2025/08/3D-book-768x576.png 768w, https://javachallengers.com/wp-content/uploads/2025/08/3D-book-1536x1152.png 1536w, https://javachallengers.com/wp-content/uploads/2025/08/3D-book.png 1600w" sizes="(max-width: 1024px) 100vw, 1024px" /> Java Challengers | All rights reservedTweetShareSharePin0 Shares

In this Java Rockstar Career video, I have a conversation with the Java Champion Vincent Mayers, and we discuss strategies and techniques for Java developers to give their first talk so that they grow as developers in their companies or even give talks at big conferences. To contact Vincent, you can find him here: LinkedIn: https://www.linkedin.com/in/vincentmayers/ X: https://x.com/vincentmayers This is the book he recommended: The Culture Map: https://amzn.to/405E2R3 For storytelling: Storyteller Tactics Card Deck Business For improving at giving talks: http://toastmasters.org/

In this inspiring Java Challengers interview, I talk with Tom Cools, a Java Champion and DevRel at Timefold. Tom shares his unique career journey from teacher to Java consultant to DevRel, including the burnout that nearly derailed his career and how he recovered. Key topics covered: - Tom's unconventional career path and how he got into Java development - Working across cultural boundaries and effective communication strategies - Recovering from burnout and prioritizing mental health - Learning techniques for Java developers to master concepts efficiently - Building and managing a successful Java User Group - The transition to Developer Relations and what the role entails - Balancing career ambitions with parenthood - Working with AI and the future of Java development Connect with Tom Cools: LinkedIn: https://www.linkedin.com/in/tom-cools-17547548/ His Twitter: https://x.com/TCoolsIT Books mentioned: The Culture Map by Erin Meyer: https://bit.ly/3Zz8RNM The Programmer's Brain: https://bit.ly/4jY6VWD How to Win Friends and Influence People...

Cassandra Chin is a young developer dedicated to introducing children to the world of programming. She has built an impressive reputation in this field and continues to advance her career through her books, workshops, and speaking engagements. Find Cassandra's Content Here: Raising Young Coders (Springer Link): https://link.springer.com/book/10.1007/979-8-8688-1393-1 Use Springer 20% Discount Code: APAUT Raising Young Coders (Amazon): https://www.amazon.com/Raising-Young-Coders-Teaching-Programming/dp/B0DVBQZ483/ Phippy's AI Friend: https://www.amazon.com/Phippys-AI-Friend-Workshop-Parents/dp/1963994019/ Watch Cassandra's Presentations: Devnexus Keynote: https://www.youtube.com/watch?v=qdRQRuzaUKQ JFokus Session: https://www.youtube.com/watch?v=NmVtORwxwAQ To contact Cassandra, you can reach out: LinkedIn: https://www.linkedin.com/in/cassandra-chin-developer/ Twitter: https://x.com/cassandraonjava If you are watching this video, it's very likely that you want to boost your career as a Java dev faster. Therefore, I invite you for a free career diagnosis call where I will help you understand what your career gaps are to work on stress-free projects, earning top salaries: https://javachallengers.com/career-diagnosis

In this interview, I speak with Java Champion Stephen Chin, who shares his expertise and experience to help you, a senior Java developer, become a DevRel (a developer who travels the world discussing technologies) and stay up to date with the latest Java technologies. To contact Stephen, here is his LinkedIn:https://www.linkedin.com/in/steveonjava/ His Twitter is: https://x.com/steveonjava This is his book, Pro Java FX: https://amzn.to/4dyvnMv If you’re reading this, it’s probably because you want to upgrade your Java career. Therefore, I invite you to have a free career diagnosis call with me so I can help you create the clarity you need to fulfill your career goals at the following link:https://javachallengers.com/career-diagnosis

In this episode, I talk with the Java Champion Dr. Cay, who has been a professor for more than 30 years, focused on Java, and he shares powerful insights for faster learning with Java by leveraging the use of AI. To contact Professor Cay, connect with him on LinkedIn: https://www.linkedin.com/in/cay-horstmann-659a4b Cay's Twitter: https://x.com/cayhorstmann If you watched this video, it means you want to grow as a Java developer. Therefore, I invite you to a free career diagnosis call at the following link, so you know your career gaps to advance as a Java developer: https://javachallengers.com/career-diagnosis

In this video, I interview Java Champion Simon Martinelli, and we discuss how the path to becoming a Java consultant works. We discuss crucial technologies that every Java developer should know, and also talk about AI. If you watch this video, you will likely become interested in advancing your Java career. Therefore, I invite you to my weekly Lives every Tuesday at 10 pm London time: https://javachallengers.com/weekly-live To contact Simon, here is his LinkedIn profile: https://www.linkedin.com/in/simonmartinelli His Twitter profile: @simas_ch This is his website: https://martinelli.ch/ The book he recommended: Lean Software Development - https://amzn.to/3YdJz7h

In this video, I interview the Java Champion, Mohamed Taman, and we discuss the essential skills of an intermediate or senior Java developer. So, they advance in their careers more quickly. If you watch this video, you will likely become interested in advancing your Java career. Therefore, I invite you to my weekly Lives every Tuesday at 10 pm London time: https://javachallengers.com/weekly-live To contact Mohamed, this is his LinkedIn: https://www.linkedin.com/in/mohamedtaman/ His Twitter Profile: @_tamanm This is his GitHub profile: https://github.com/mohamed-taman

In this video I talk with the Java Champion Roberto Cortez who is a Principal software engineer for Red Hat, works on Quarkus, is highly involved with Open-source projects and he is also the founder and organizer of the JNation conference. Since you watched this video, you are likely willing to boost your Java career growth more quickly. Therefore, I offer you a career diagnosis session for you for free and you can schedule it here: https://javachallengers.com/career-diagnosis To contact Roberto Cortez, here is his LinkedIn: https://www.linkedin.com/in/radcortez/ This is the JNation conference: https://jnation.pt/ Roberto's Twitter (X): https://x.com/radcortez #Java #JavaCareer #javacareergrowth #javachallengers #JavaCareerPath #DeveloperCareer #seniordeveloper

If you are watching this video, you want to accelerate your Java career growth. Therefore, I invite you to a career strategy conversation with me for free so I can help you realize your career potential:https://javachallengers.com/strategy-conversation/ In this video, I have the Java Champion and Spring Developer Advocate Josh Long discussing techniques to learn Java technologies faster, technologies to focus on as a Java developer, how to stay up to date, how to get promoted, and more! To contact Josh, here is his LinkedIn:https://www.linkedin.com/in/joshlong/ He is also on Twitter: https://x.com/starbuxman This is the Bootiful podcast where Josh interviews Spring experts:https://open.spotify.com/show/5eyimRNrvZStATQk8by82A Josh Long blog:https://joshlong.com/ This is the super Spring class Josh Long mentions in the video where he teaches many concepts from Spring for 2025: https://www.youtube.com/watch?v=GAgelbsTb9M&ab_channel=Coffee%2BSoftware A presentation from Neal Ford on software architecture:https://www.youtube.com/watch?v=Q6RfMmMwhvM&ab_channel=DeveloperSummit

In this video, I have a conversation with the Java Champion Bruno Borges, and we discuss the critical skills a senior Java developer must have to succeed and deliver value for companies. If you want to reach out to Bruno Borges, here is his LinkedIn profile:https://www.linkedin.com/in/brunocborges/ His Twitter: https://x.com/brunoborges Here is the book Bruno recommended: https://amzn.to/3F5MHuZ The movie Hitch is about a relationship coach for men:https://www.imdb.com/title/tt0386588/

In this video, I have a fantastic chat with the Java Champion, Oracle Ace, and specialist in quality engineering Elias Nogueira about the importance of having your Java application well-tested. Otherwise, bugs will make your life hell! To find Elias, here is his LinkedIn profile: https://www.linkedin.com/in/eliasnogueira/ His personal website: https://eliasnogueira.com Books Elias mentioned: Radical Candor: https://amzn.to/3EkdyDq Non violent communication: https://amzn.to/4aJqvCH Quarkus in Action: https://amzn.to/40UANwF Effective software testing: https://amzn.to/4jQKUtY To work on a stress-free job with cutting-edge technologies earning top salaries, I will run the High-Value Developer Roadmap for FREE, and you can get subscribed at the following link: https://javachallengers.com/subscription-ytb-desc

I have a fantastic chat with the Java Champion and Youtuber Dan Vega in this video. We discuss crucial lessons to implement in your career if you want to become or be a better senior Java developer! To reach out to Dan Vega, you can contact him in the following: LinkedIn: https://www.linkedin.com/in/danvega/ Website: https://www.danvega.dev/ Twitter X: https://x.com/therealdanvega Youtube Channel: https://www.youtube.com/@DanVega Dan's podcast: https://spring-office-hours.transistor.fm His book Fundamentals of Software Engineering: https://www.oreilly.com/library/view/fundamentals-of-software/9781098143220/

In this video, I talk with the Java Champion, Microsoft MVP, Google Expert, and Oracle Ace Loiane Groner. She has been contributing to the Java community for many years, and in this conversation, we talk about principles that will help you get your promotion as a Java developer. To contact her, this is her LinkedIn: https://www.linkedin.com/in/loiane/ On Twitter: https://x.com/loiane The books she recommended: Effective Java: https://amzn.to/4asMX2V Java Coding Problems: https://amzn.to/4aqPDOu Building Microservices: https://amzn.to/4aqPDOu Designing Data-Intensive Applications: https://amzn.to/42i6iBW

In this video, I talk with Geertjan, the Java Champion, Azul director and community manager from Foojay (Friends of JDK) and he shares his career path and how to contribute with Foojay so you boost your Java career. To contact Geertjan on LinkedIn: https://www.linkedin.com/in/geertjanwielenga/ Or on X: https://x.com/GeertjanW If you are interested in contributing to Foojay, here is the link:https://foojay.io/today/join-slack-com-t-foojay-signup/ Here is his book - Developer, Advocate!: Conversations on turning a passion for talking about tech into a career: https://amzn.to/4afYna4

In this video, I have a fantastic conversation with the top Java certification book writer, Jeanne Boyarsky, and she shares secrets for a successful Java career. She wrote the Oracle Certified Professional Java books for Java 8, Java 11, Java 17, and Java 21. She is also the author of Real-World Java: Helping You Navigate the Java Ecosystem (Tech Today). You can purchase her Java 21 certification book here: https://amzn.to/4gTPoOE For more information about Jeanne, here is her LinkedIn: https://www.linkedin.com/in/jeanne-boyarsky/ This is her X profile: https://x.com/jeanneboyarsky

In this video, we discuss the crucial career lessons Rodrigo applied to go from Brazil to land his dream job with Java in New York. We discuss the obstacles and the actions we can take to reach career success as a Java developer. To reach out to Rodrigo, here is his LinkedIn: https://www.linkedin.com/in/rodrigograciano/ You can also find Rodrigo on X: https://x.com/rodrigograciano You also can find me in the following. ↴ Java Challengers: https://www.instagram.com/javachallengers/ Twitter (X): https://twitter.com/rafadelnero My Blog ↴ https://javachallengers.com/ Leave a comment with questions or more video content! #Java #OpenSource #JavaCommunity #NYJUG #JavaChallengers #javacareer #javaexperts #javachampion #javacertification #programmer #javaexperts #CareerGrowth #DeveloperCareer #DevCareer #DevCareerGrowth

In this video, Otavio shares his career trajectory, and we discuss ways Java developers can skyrocket their careers more quickly. As I said in the video, the registrations for the Challenger Developer mentorship are open, and you can enroll in it here: https://javachallengers.com/lc-challenger-developer Also, take a look at all books from Otavio Santana at the following link: https://otaviojava.com/books/ This is Otavio's LinkedIn profile: https://www.linkedin.com/in/otaviojava/ On X, this is Otavio's handle: https://x.com/otaviojava You also can find me in the following. ↴ Java Challengers: https://www.instagram.com/javachallengers/ Twitter (X): https://twitter.com/rafadelnero My Blog ↴ https://javachallengers.com/ Leave a comment with questions or more video content! #Java #OpenSource #jakartaee #JavaChallengers #javacareer #javaexperts #javachampion #javacertification #programmer #javaexperts

I talk with Edson Yanaga, the Java Champion and former Microsoft MVP in this video. We discuss his career challenges, how his career skyrocketed, and how he became a Java Champion and Microsoft MVP! You can't miss this one. It's full of golden insights for your Java career! To find Yanaga, this is his LinkedIn: https://www.linkedin.com/in/yanaga/ Awesome Google Wallet: https://developers.google.com/wallet You also can find me in the following. ↴ Java Challengers: https://www.instagram.com/javachallengers/ Twitter (X): https://twitter.com/rafadelnero My Blog ↴ https://javachallengers.com/ Leave a comment with questions or more video content! #Java #DevRel #Google #RedHat #JavaCareer #javaexperts #IntermediateDev #developercareer #JavaChallengers #JavaChampion #microsoftmvp #GooglWallet

If you are an intermediate or senior Java developer who wants to work on a stress-free job earning a top salary, fill out the following form for a Free Career Diagnosis session: https://javachallengers.com/career-diagnosis I will also do those Lives every Tuesday at 10 pm London time, so make sure you don't miss it!