Master Java Control Statements for Cleaner Code

Current Java skill snapshot 💡 Languages & Concepts: • Core Java • OOP • Collections • Exception handling • File handling Tools: • Git • GitHub Still learning, but ready to apply these skills in a real-world team environment 💻 #Java #DeveloperSkills #EntryLevel

Java var var is type inference at compile time (introduced in Java 10). The compiler must figure out the type from the right-hand side. 10 → clearly an int ✅ "hello" → clearly a String ✅ null → no type information ❌ Key rule: If the compiler can’t infer a concrete type → your code won’t compile. Keep it simple: Use var when the type is obvious, avoid it when it creates ambiguity. #java #programming #cleanCode #developers #interview

🚀 Why is String Immutable but StringBuffer Mutable in Java? This is one of the most common and important interview questions for Java developers. 🔹 String (Immutable) Once created, it cannot be changed Every modification creates a new object Ensures security, thread-safety, and caching Used in sensitive areas like URLs, file paths, etc. 🔹 StringBuffer (Mutable) Can be modified after creation Changes happen in the same object More memory efficient Thread-safe (synchronized) 💡 Key Insight: Use String when data should not change Use StringBuffer when frequent modifications are needed #Java #JavaDeveloper #CoreJava #String #StringBuffer #Programming #Coding #SoftwareDevelopment #BackendDeveloper #FullStackDeveloper #SpringBoot #CodingInterview #InterviewPreparation #TechInterview #Developers #LearnJava #JavaConcepts #DSA #CodingLife #TechCommunity

A weekly Java Coding Series – program 132 contains() method in Java contains() is a method used to check whether a specific element exists in a collection or to check substring presence in a string. It is useful to perform conditional logic and helps to search quickly without manual loops. It helps to write clean and readable code and reduces boilerplate code. #java #softwaredevelopment #softwareengineer #linkedincreators #skilledshraddha Program and output –

☕ Java Interview Question 📌 What are the advantages of multithreading? In Java, multithreading allows multiple threads to execute concurrently within a program. 🔹 Responsiveness ✔ Keeps applications responsive even when one task takes time ✔ Improves user experience in interactive applications 🔹 Resource Sharing ✔ Threads share the same memory space ✔ Makes communication between tasks faster 🔹 Better Performance ✔ Utilizes multiple CPU cores efficiently ✔ Increases parallel execution speed 🔹 Economy ✔ Creating threads is lighter than creating separate processes ✔ Reduces memory and system overhead 🔹 Scalability ✔ Improves performance on multicore systems ✔ Supports handling multiple tasks simultaneously 💡 In Short: Multithreading improves speed, responsiveness, and efficient resource usage in Java applications ☕ 👉For Java Course Details  Visit : https://lnkd.in/gwBnvJPR . #Java #Multithreading #JavaInterview #Programming #Concurrency #InterviewPreparation #TechSkills

☕ Java Functions (Methods) Explained A function (method) in Java is a block of code designed to perform a specific task. It helps in making code reusable and organized. . . 🔹 Parameters → Variables defined in the method to receive input values 🔹 Arguments → Actual values passed to the method when it is called . 💡 Example: If a method is defined as add(int a, int b) → a and b are parameters When calling add(5, 10) → 5 and 10 are arguments . . Why we use functions? ✨ Using functions makes code cleaner, efficient, and easier to maintain. #Java #Programming #Coding #Developers #postoftheday #linkedinpost #frontend #knowledge

Most Java developers write code. Very few write good Java code🔥 Here are 10 Java tips every developer should know 👇 1. Prefer interfaces over implementation → Code to "List" not "ArrayList" 2. Use "StringBuilder" for string manipulation → Avoid creating unnecessary objects 3. Always override "equals()" and "hashCode()" together → Especially when using collections 4. Use "Optional" wisely → Avoid "NullPointerException", but don’t overuse it 5. Follow immutability where possible → Makes your code safer and thread-friendly 6. Use Streams, but don’t abuse them → Readability > fancy one-liners 7. Close resources properly → Use try-with-resources 8. Avoid hardcoding values → Use constants or config files 9. Understand JVM basics → Memory, Garbage Collection = performance impact 10. Write meaningful logs → Debugging becomes 10x easier Clean code isn't about writing more. It’s about writing smarter. Which one do you already follow? 👇 #Java #JavaDeveloper #SoftwareEngineering #BackendDevelopment #SpringBoot #CleanCode #Programming #Developers #TechTips #CodingLife

☕ Java Interview Question 📌 Explain the LinkedList class in Java In Java, LinkedList is a collection class that stores elements using a doubly linked list structure. 🔹 Key Features ✔ Maintains insertion order ✔ Allows duplicate elements ✔ Non-synchronized by default 🔹 Implementation ✔ Implements List and Deque interfaces ✔ Can be used as a list, queue, or stack 🔹 Performance ✔ Fast insertion and deletion in the middle ✔ Slower random access compared to ArrayList 🔹 Syntax • LinkedList<Type> list = new LinkedList<>(); 💡 In Short: LinkedList is best when frequent insertions and deletions are needed instead of fast indexing 🚀☕ 👉For JAVA Course Details  Visit : https://lnkd.in/gwBnvJPR . #Java #LinkedList #JavaInterview #Collections #Programming #InterviewPreparation #TechSkills

☕ Java Interview Question 📌 Why can’t we create a generic array in Java? In Java, generic arrays are restricted because arrays and generics handle type information differently. 🔹 Key Reason: ✔ Arrays are Reified • Arrays store and check their element type at runtime ✔ Generics use Type Erasure • Generic type information is removed during compilation ✔ Type Safety Conflict • Runtime cannot verify the actual generic type inside an array 🔹 What Problem Can Occur? • It may allow invalid assignments at runtime • Can lead to ArrayStoreException or unsafe behavior 🔹 Example: • new T[10] is not allowed because T is unknown at runtime 💡 In Short: Java prevents generic array creation to maintain type safety between compile-time generics and runtime array checks. 👉For Java Course Details  Visit : https://lnkd.in/gwBnvJPR . #Java #JavaInterview #Generics #TypeErasure #Programming #InterviewPreparation #CoreJava#ashokit