Infosys Interview Q & A | Recently Asked (Dec 2025) | Java Developer скачать в хорошем качестве

Infosys Interview Q & A | Recently Asked (Dec 2025) | Java Developer

Preparing for your Infosys Java interview? In this video, I share real Infosys Java Developer interview questions asked in the latest Technical Round (reported December 4, 2025). I provide detailed answers and explanations for critical Core Java and SQL topics to help you crack the Infosys recruitment process. Whether you are a fresher or an experienced Java backend engineer, this video covers the exact patterns Infosys is using right now. We dive deep into the Java Collections Framework, OOPs concepts, String handling, and Database JOINs. 📝 Topics Covered in This Video: Java String Immutability: Why Strings are immutable in Java (String Constant Pool & Security). StringBuilder vs. StringBuffer: Understanding thread safety and performance differences. Java Collections Framework: Key differences between List, Set, and Map interfaces. Advanced Java Map: How WeakHashMap works and its relation to Garbage Collection. OOPs Concepts: The 4 pillars of Object-Oriented Programming (Inheritance, Polymorphism, Encapsulation, Abstraction). SQL Interview Questions: Inner, Left, Right, and Full JOINs explained. Marker Interfaces: Serialization and Cloneable examples. 💡 Why Watch? These questions were asked in the December 2025 drive. Mastering these answers will boost your confidence for technical interviews at top MNCs like Infosys, TCS, Wipro, and Accenture. ⏱️ Timestamps & Key Moments: 0:00 - Intro: Latest Infosys Interview Update (Dec 2025) 0:44 - Why is String Immutable in Java? 7:28 - Difference between StringBuilder and StringBuffer 10:58 - List vs Set vs Map (Collections Framework) 16:45 - What is WeakHashMap? (Tricky Question) 22:50 - OOPs Principles Explained with Examples 30:27 - SQL JOIN Types (Inner, Left, Right, Full) 38:31 - What is a Marker Interface in Java? Hashtags: #InfosysInterview #JavaInterviewQuestions #CoreJava #CodingInterview #Infosys2025 #JavaDeveloper #SQL #BackendEngineering #InterviewPrep #MNCJobs