every java developer should see this at least once: The evolution of async java since the beginning (by Victor Rentea). For me, see the evolution of the APIs and understand the "why" it is like this, makes it much more clear to understand the topic at hand https://lnkd.in/dW7R4Mvu

💡 What I Learned Today: Checked vs Unchecked Exceptions in Java While strengthening my Java fundamentals, I revisited a core concept in Exception Handling — the difference between Checked and Unchecked exceptions. 🔹 Checked Exceptions - These must be handled at compile time using try-catch or throws. - Common examples: IOException, SQLException. - Useful when the error is expected and can be recovered from (e.g., file not found, network issues). 🔹 Unchecked Exceptions - These occur at runtime and don’t require mandatory handling. - Examples: NullPointerException, ArithmeticException. - Usually caused by programming logic errors. 📌 Quick takeaway: Checked → External issues you can anticipate Unchecked → Internal issues you should fix in code logic Understanding this difference helps write cleaner, safer, and more predictable Java applications. #Java #ExceptionHandling #JavaDeveloper #CodingTips #LearningJourney

Have a look at how Java’s built-in Functional Interfaces, make your code cleaner and more expressive #Java #FunctionalProgramming #Streams #Lambda #CleanCode #DeveloperExperience

Knowing your java collection size and not setting the initial capacity is like watching your JVM beg for mercy and doing nothing about it.

🚀 365-Day Java Challenge – Day 190 🚀 ⸻ 🔹 Day 190: Lambda Expressions and Functional Interfaces Which of the following statements about lambda expressions in Java is FALSE? Options: A) A lambda expression can be used wherever a functional interface is expected. B) The target type of a lambda expression is inferred from the context in which it appears. C) A lambda expression can have multiple unrelated return statements without a common type. D) Lambda expressions cannot access effectively final variables from the enclosing scope.

🚀 Real-World Use Case: Overloading Constructors (Java) Constructors can also be overloaded in Java. This is particularly useful for creating objects with different initial states. For example, you might have one constructor that takes no arguments and initializes the object with default values, and another constructor that takes several arguments to initialize the object with specific values. This allows flexibility in object creation based on the available information. #Java #JavaDev #OOP #Backend #professional #career #development

💡 Java Tip of the Day: Optional > Null checks Optional helps avoid NullPointerException and makes intent clearer. ✅ Example: Optional<User> user = userRepository.findById(id); user.ifPresent(u -> System.out.println(u.getName())); Why it’s useful: ✅ Avoids nested null checks ✅ Encourages functional style ✅ Makes APIs more predictable 💬 Do you use Optional in your services or return types? #Java #CleanCode #JavaTips #NPE

If anyone is interested in developing their skills in Core Java, a quick thought based on my experience that might be helpful. 💬 Here are some tips for developing this skill:

If anyone is interested in developing their skills in Core Java, a quick thought based on my experience that might be helpful. 💬 Here are some tips for developing this skill: