Spring Boot REST API Example with Java

🚀 Spring Boot vs Spring Framework As a Java developer, understanding the difference between Spring Framework and Spring Boot is crucial for building efficient applications. Here’s a quick breakdown: 🔹 Spring Framework Full-featured framework for building enterprise Java applications. Requires manual configuration of beans, XML, or annotations. Needs an external server (Tomcat, Jetty) to run. Flexible, but setup can be time-consuming. 🔹 Spring Boot Built on top of Spring to simplify development. Auto-configures dependencies and components. Comes with embedded servers, enabling standalone apps. Great for microservices, REST APIs, and rapid prototyping. 💡 Key Takeaway: Spring Boot reduces boilerplate, accelerates development, and provides production-ready defaults — making it the go-to choice for modern Java applications. #Java #SpringBoot #SpringFramework #Microservices #SoftwareDevelopment #Programming

Java developers before discovering Spring Boot 😵 “Just one small config change bro…” • applicationContext.xml • security-config.xml • dispatcher-servlet.xml • 50 lines of bean configuration • 2 hours of debugging Still not working ❌ Java developers after Spring Boot 😎 Add one annotation: @SpringBootApplication Run ▶️ Works on first try ✔️ Spring Boot didn’t just reduce configuration… It saved developers from emotional damage 😂 Moral of the story: If you’re still writing XML configs… Stay strong 💀 What was your worst Spring configuration experience? #Java #SpringBoot #ProgrammingHumor #BackendDeveloper #CodingLife #SoftwareEngineering

Java developers before discovering Spring Boot 😵 “Just one small config change bro…” • applicationContext.xml • security-config.xml • dispatcher-servlet.xml • 50 lines of bean configuration • 2 hours of debugging Still not working ❌ Java developers after Spring Boot 😎 Add one annotation: @SpringBootApplication Run ▶️ Works on first try ✔️ Spring Boot didn’t just reduce configuration… It saved developers from emotional damage 😂 Moral of the story: If you’re still writing XML configs… Stay strong 💀 What was your worst Spring configuration experience? #Java #SpringBoot #ProgrammingHumor #BackendDeveloper #CodingLife #SoftwareEngineering

Java + Spring Boot is still a powerhouse While new frameworks keep coming, Java backend remains solid for: i) Scalable APIs ii) Enterprise applications iii) Secure systems Currently working on improving API performance and learning better design patterns. Consistency > Hype

⚡ 5 Spring Boot Annotations Every Java Developer Should Know When working with Spring Boot, annotations play a crucial role in reducing boilerplate code and making applications easier to develop and maintain. Here are some commonly used annotations every backend developer should understand: 🔹 @SpringBootApplication This is the main annotation that combines @Configuration, @EnableAutoConfiguration, and @ComponentScan. 🔹 @RestController Used to create RESTful web services. It combines @Controller and @ResponseBody. 🔹 @Autowired Helps automatically inject dependencies using Spring’s Dependency Injection. 🔹 @Service Used to define service-layer components where business logic is implemented. 🔹 @Repository Used for data access layer and helps handle database-related operations. Understanding these annotations is essential for building clean and maintainable Spring Boot applications. Which Spring Boot annotation do you use the most in your projects? 👇 #Java #SpringBoot #BackendDevelopment #JavaDeveloper #Microservices

Say goodbye to NullPointerExceptions. Spring Boot 4 and Spring Framework 7 make significant strides toward compile-time null-safety with JSpecify. By adopting @NullMarked and @Nullable, Spring is providing Java developers with essential improvements: - Catch NPEs at compile time using tools like NullAway - Cleaner, explicit APIs - Smarter IDE guidance from the first line of code - More reliable production systems The “billion-dollar mistake” is finally being addressed in the Spring ecosystem #Java #SpringBoot #SoftwareEngineering #BackendDevelopment #FullStackDeveloper #CleanCode #EnterpriseArchitecture #Spring7 #Java25 #NullSafety #JSpecify #OrlandoTech #SeniorDeveloper #H1BTech #SystemDesign

🚀From Chaos to Clarity: My Journey from Core Java to Spring Boot Ever felt like you're spending more time managing configurations than actually building something meaningful? 😅 👉 BEFORE (Core Java) Endless XML configs, manual setup, dependency headaches… “Main developer hoon ya configuration manager 😂” 👉 AFTER (Spring Boot) Auto-configuration, embedded servers, faster development… “Life sorted 😄” 💡 What changed? Spring Boot didn’t just simplify development—it changed the way I think about building applications. Instead of focusing on setup, I now focus on logic, features, and user experience. 🔥 Bonus Insight (Important for Beginners): Spring Boot is powerful, but don’t skip Core Java fundamentals. Understanding concepts like OOP, collections, multithreading, and JVM helps you truly master Spring Boot instead of just using it. 📌 Key Takeaway: Tools like Spring Boot don’t replace fundamentals—they amplify them. If you're starting your backend journey, trust the process: 👉 Core Java → JDBC → Servlets → Spring Core → Spring MVC → Hibernate → JPA → Spring Boot → Projects → Advanced (Security + Microservices) #Java #SpringBoot #BackendDevelopment #CodingLife #Developers #Programming #SoftwareDevelopment #LearningJourney

One of the most valuable Java patterns in production: Immutable DTOs with Records + Builder: In real-world Java applications (Spring Boot APIs, microservices, event systems), we create hundreds of DTOs. The best modern pattern in 2026: Records (immutable by default) + Builder pattern for flexible construction.Benefits:Immutable → thread-safe and predictable No boilerplate getters/setters Builder gives nice fluent API for optional fields Excellent integration with Jackson, validation, and MapStruct Realistic production example below #Java #SpringBoot

Are your enterprise applications still running on older versions of Java and Spring Boot? With Java 8 and Spring Boot 1.x/2.x reaching end of life, challenges around performance, security, and scalability are only increasing. Our perspective paper explores how iRenew’s semi-automated approach helps enterprises modernize these applications, improving performance, reducing technical debt, and accelerating time to market. With net efficiency gains of 11%–20% across discovery, refactoring, and testing, iRenew makes modernization faster and smarter. Explore our latest perspective paper playbook on the application modernization journey, including key phases, measurable benefits, and a real-world case study. https://lnkd.in/gw5vnfRf #IrisSoftware #PerspectivePaper #Java #SpringBoot #iRenew

Are your enterprise applications still running on older versions of Java and Spring Boot? With Java 8 and Spring Boot 1.x/2.x reaching end of life, challenges around performance, security, and scalability are only increasing. Our perspective paper explores how iRenew’s semi-automated approach helps enterprises modernize these applications, improving performance, reducing technical debt, and accelerating time to market. With net efficiency gains of 11%–20% across discovery, refactoring, and testing, iRenew makes modernization faster and smarter. Explore our latest perspective paper playbook on the application modernization journey, including key phases, measurable benefits, and a real-world case study. https://lnkd.in/gw5vnfRf #IrisSoftware #PerspectivePaper #Java #SpringBoot #iRenew