Spring Boot Debugging Tip: @Scheduled Method Not Running

Spring Boot profiles are great… until your config starts looking like a multiverse of YAML 😅 In this video, I walk through **Spring Boot Profile Groups** and how they help you bundle profiles without summoning chaos from `application.properties`. Less config spaghetti. More sane environments.   More “it works on my machine” energy — but professionally. 🎥 https://lnkd.in/eBWf6ZJ7 #SpringBoot #Java #BackendDevelopment #SoftwareEngineering #Developers #Programming #Microservices #TechTips

Spent 10 minutes wondering why my Spring Boot bean wasn't being injected. No errors. No warnings. Just null. The code looked fine: @Service public class PaymentService { // logic } But Spring couldn't find it. The problem: My main class was in com.myapp My service was in com.payments Spring Boot only scans the package where @SpringBootApplication lives and its sub-packages. The fix: Move the service under com.myapp.payments Or add: @SpringBootApplication(scanBasePackages = "com") But be careful with broad scans - they slow startup. Simple rule: Keep everything under your main package. #SpringBoot #Java #BackendDevelopment #Programming

Everything you need to know about Spring Security in one place! From SecurityFilterChain to JWT vs Session — this cheat sheet covers it all. Bookmark this before your next Spring Boot project #springsecurity #SpringSecurity #SpringBoo #Java #JWT #WebSecurity #BackendDevelopment #JavaDeveloper #Programming #SoftwareEngineering #REST #APIDesign #TechTips #Developer

Spent 15 minutes wondering why my @Value annotation wasn't injecting the property. The code: @Component public class AppConfig {   @Value("${app . name}")   private String appName;   public AppConfig() {     System.out.println(appName);   } } It printed null every time. The problem: @Value injection happens after the constructor runs. In the constructor, Spring hasn't injected anything yet. The fix: Use @PostConstruct instead: @PostConstruct public void init() {   System.out.println(appName); } Or use constructor injection: public AppConfig(@Value("${app . name}") String appName) {   this.appName = appName; } Constructor runs first. Injection happens after. Simple timing issue. Easy to miss. #SpringBoot #Java #BackendDevelopment #Programming

Find the minimum distance between a given start index and any occurrence of a target in the array. Leetcode problem link: https://lnkd.in/gZFkirHw 🔍 Key Takeaways: Used a two-pointer approach to scan from both ends. Kept updating the minimum absolute distance from start. Included the condition left != right to avoid checking the same element twice. ✅ Why this works: Instead of scanning only from one side, this approach checks both ends in each iteration, making the logic structured and efficient. 📘 What I like about this solution: Simple and readable Avoids redundant checks Great example of combining two pointers with distance calculation #Java #LeetCode #DSA #Programming #SoftwareEngineering #Developers #loveToCode

Inside Backend One of the most common confusions for beginners: Request vs Response. Here’s the simplest way to understand it: - Request = user asking for something   - Response = server sending back the result  This simple cycle powers every application. Continuing a series to simplify backend concepts step by step. Start Your Backend Journey with Java : https://lnkd.in/gdjfZTcH #backenddevelopment #webdevelopment #programming #softwaredevelopment #coding

Dependency Injection is one of those concepts that sounds more complicated than it really is. At its core, it simply means: Instead of a class creating its own dependencies, you give those dependencies to it from the outside. Why does that matter? Because it makes the code: • easier to test • easier to maintain • less tightly coupled • clearer about what it actually needs #SoftwareEngineering #Java #SpringBoot #BackendDevelopment #CleanCode #DependencyInjection #Programming

🚀 Just dropped a new video on CoreCoders! One of the most common beginner questions in programming: 👉 How do you swap two variables? In this video, I’ve explained: ✔️ Swapping using a third (temporary) variable ✔️ Swapping without extra space (smart tricks 💡) ✔️ The logic behind it so you actually understand — not just memorize Most beginners only learn the basic method, but knowing multiple approaches builds strong problem-solving skills and helps in interviews too. 🎯 If you're struggling with logic building, this is a must-watch! 🔗 Watch here: https://lnkd.in/g9NfXhMp Let me know in the comments: 👉 Which method did you find more interesting? #Programming #Coding #Java #DSA #LogicBuilding #Beginners #CodingJourney #CoreCode

💫@𝐏𝐫𝐢𝐦𝐚𝐫𝐲 𝐯𝐬 @𝐐𝐮𝐚𝐥𝐢𝐟𝐢𝐞𝐫 𝐢𝐧 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭: When working with dependency injection in Spring Boot, handling multiple beans of the same type can get tricky. That’s where @Primary and @Qualifier come into play 👇 👉 @Primary Used to define a default bean. If multiple beans exist, Spring automatically picks the one marked as @Primary. 👉 @Qualifier Used to explicitly specify which bean you want. Gives you precise control over dependency injection. 💡 Key Insight: Use @Primary for default behavior and @Qualifier when you need specific control. Together, they make your code more flexible and maintainable. #SpringBoot #JavaDeveloper #BackendDevelopment #DependencyInjection #SpringFramework #Java #Coding #SoftwareDevelopment #TechLearning #Developers #Programming #100DaysOfCode #JavaBackend #SpringAnnotations 𝐓𝐡𝐚𝐧𝐤𝐬 𝐭𝐨 𝐦𝐲 𝐌𝐞𝐧𝐭𝐨𝐫: Anand Kumar Buddarapu Saketh Kallepu Uppugundla Sairam