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How does class loading follow the delegation model? Why does the JVM use generational garbage collection? What is bytecode in Java? Why is the Metaspace stored in native memory instead of the heap? What happens when a NoClassDefFoundError occurs versus ClassNotFoundException? What is the difference between Young Generation and Old Generation in heap memory? What are the main components of JVM architecture? What is the JVM Stack? What is the purpose of the Just-In-Time (JIT) compiler? What is Metaspace, and how does it differ from PermGen? Why do we use the parent delegation model in class loading? What is the difference between Class.forName() and ClassLoader.loadClass()? Explain the lifecycle of a class in JVM (loading, linking, initialization)? Explain the internal working of the linking phase (verification, preparation, resolution)? How does escape analysis enable stack allocation optimizations? Explain the internal working of safepoints and why the JVM needs them? What is the Class Loader subsystem in JVM? What are the types of class loaders in JVM? What is the purpose of the Java Native Interface (JNI)? Explain the execution flow of a Minor GC vs Major GC?

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