Advanced Java 8 Stream API challenges and solutions

Mastering Java 8 Stream API is essential for modern Java interviews. To get started, I’ve collected easy-level coding practice problems that will help you build confidence before moving to harder challenges. Here are some examples included in my practice set: ✅ Filter even numbers ✅ Convert list of strings to uppercase ✅ Find first element greater than 10 ✅ Sort strings by length ✅ Count words starting with 'a' ✅ Group strings by length ✅ Join strings with comma ✅ Find the maximum element in a list ✅ Flatten a nested list using flatMap 👉 I’ve shared the full code in my GitHub repo: https://lnkd.in/dajYPJCh This is just Part 1 (Easy Level) — I’ll share Hard Level practice problems next as part of this mini-series. #Java #Java8 #JavaStreams #CodingChallenge #ProblemSolving #InterviewPreparation

“Java 8 Stream API — Advanced Level Interview Questions ⚡ (Part 3)” After sharing Easy Level (Part 1) and Hard Level (Part 2) practice sets, here’s the Advanced Level (Part 3). These problems are tricky, but they help strengthen your mastery of Stream API for real-world use cases and interviews. Here are some challenges included: ✅ Find employees with duplicate names ✅ Find top-K frequent elements in a list ✅ Find common elements in two lists ✅ Check if two strings are anagrams ✅ Find the majority element in a list ✅ Find the first repeated character in a string ✅ Find the longest word in a sentence ✅ Find all numbers that appear exactly twice ✅ Find the kth largest element ✅ Find duplicate characters in a string 👉 Full practice code is available in my GitHub repo: https://lnkd.in/dnaD6GRT This is Part 3 of my Java 8 Stream API Series: Part 1: Easy Level Part 2: Hard Level Part 3: Advanced Level 🚀 #Java #Java8 #JavaStreams #CodingChallenge #ProblemSolving

Exciting Project: Building & Deploying a Java Web Calculator Application Using Two Servers! I recently worked on an exciting project where I built and deployed a Java Web Calculator with a two-server architecture. The aim was to separate the build and deployment processes for better scalability and efficiency. Here’s how I tackled the entire setup: 🛠️ Project Breakdown: Server 1 (Build Server): Dedicated to compiling and packaging the application. Server 2 (Deploy Server): Handles deployment and serves the application to users. 🚧 Challenges Faced: Server Configuration: Setting up two Ubuntu servers with all the necessary dependencies (Java, Maven, Tomcat) was challenging but essential. Deployment Automation: I used scp to securely transfer the WAR file between servers, ensuring smooth deployment. Versioning & Compatibility: Ensuring the correct setup for both Java and Maven on both servers to avoid build or deployment issues. Managing Tomcat Setup: Installing and configuring Apache Tomcat on the deploy server was key to serving the web app properly. 💡 Key Takeaways: Separation of Concerns: Keeping build and deployment on separate servers made the process more organized and manageable. Automation: Automating the build and deployment with tools like Maven and scp helped streamline the process. https://lnkd.in/gMxhW-Cd: Java Web Calculator Build Documentation This was a fantastic learning experience where I enhanced my skills in deployment pipelines, server configuration, and troubleshooting. Looking forward to more challenging projects ahead! 💻 #Java #WebDevelopment #Maven #Tomcat #DevOps #Deployment #CI_CD #JavaDeveloper #CloudComputing #TechProjects

88% of organizations are exploring OpenJDK alternatives but the real question isn’t why to migrate from Oracle Java SE, but HOW to do it without risk. Our latest white paper lays out the path: ✅ A proven 3-step migration methodology ✅ 100% success rate across hundreds of enterprises ✅ Templates, tools & products to automate time-consuming tasks 👉 Download the white paper to learn more: https://lnkd.in/gkzMqcpz #Java #OpenJDK #javamigration

Using streams with `java.time` makes generating, transforming, and querying a sequence of dates or times surprisingly concise, such as using `LocalDate.EPOCH.datesUntil(LocalDate.now()).map(...)`.

If you’re planning a Java migration, this visual is a great starting point. Azul breaks it down into 3 steps: Discovery, Migration, and Compliance. It’s also backed by automation and real-world success. Dive deeper by reading this white paper: https://lnkd.in/eD7Y7wNy 

If you’re planning a Java migration, this visual is a great starting point. Azul breaks it down into 3 steps: Discovery, Migration, and Compliance. It’s also backed by automation and real-world success. Dive deeper by reading this white paper: https://lnkd.in/gMmqDrAE 

If you’re planning a Java migration, this visual is a great starting point. Azul breaks it down into 3 steps: Discovery, Migration, and Compliance. It’s also backed by automation and real-world success. Dive deeper by reading this white paper: https://lnkd.in/gkBnuRs4 

PDF4Java 4.1.0 now available with support for horizontal text scaling, long words wrapping in formatted content and several bug fixes included. https://lnkd.in/dvYCVRHx