Java Express Official

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🚀 Tricky Core Java Interview Questions – Must-Know for Java Developers! 💡 Are you preparing for Java interviews? Here’s a list of tricky Core Java questions that often confuse even experienced developers! 🎯 🔥 Strings & Memory 🔹 Why is String immutable in Java? 🔹 Difference between StringBuffer and StringBuilder? 🔹 What happens when you modify a string stored in the String Pool? 🏗 Object & Classes 🔹 Can we override static methods? Why? 🔹 What happens if a constructor is private? 🔹 Can we make a class immutable? How? ⚠ Exception Handling 🔹 What happens if an exception is thrown in a finally block? 🔹 Can we have try without catch? 🔹 Checked vs. Unchecked exceptions? 🚦 Multi-threading 🔹 Difference between wait(), sleep(), and yield()? 🔹 Can synchronized methods run in parallel? 🔹 What happens if we call run() instead of start() in a thread? 📚 Collection Framework 🔹 Difference between HashMap and ConcurrentHashMap? 🔹 Can we store null keys in HashMap and Hashtable? 🔹 Why is ArrayList faster than LinkedList for searching? 🔄 JVM & Memory Management 🔹 How does the Garbage Collector work in Java? 🔹 What is PermGen vs. Metaspace? 🔹 What happens if an object has only finalize() and no references? 🤯 Miscellaneous 🔹 What happens if we modify a HashMap while iterating? 🔹 Can we have multiple public classes in a Java file? 🔹 Why does Java not support multiple inheritance? 🔥 Watch More Java Interview Questions: 🔹 Top Java 8 Coding Problems: https://bit.ly/java8coding 🔹 Top Java Interview Programs : https://bit.ly/3QGJFAf 🔹 Java Full Stack Course: https://bit.ly/412pFNc 🔹 Real Time Java videos : https://bit.ly/3Dn3h9l 🔴 Join Interview Group 📌𝐓𝐞𝐥𝐞𝐠𝐫𝐚𝐦: https://t.me/javaexpressit 🔴 Follow me on social media: 📌𝐓𝐞𝐥𝐞𝐠𝐫𝐚𝐦: https://t.me/javaexpressofficial

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