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Learn Java data types in detail with memory size, default values, syntax, real-world examples, comparison tables, and interview questions for beginners and professionals.

Learn JVM, JRE, and JDK in detail with architecture, internal working, real-world examples, diagrams, memory concepts, execution flow, and interview questions.

Learn String, StringBuilder, and StringBuffer in Java with memory concepts, mutability, thread safety, performance comparison, internal working, complex examples, and interview questions.

Learn how Java works internally from source code compilation to JVM execution, memory management, class loading, and garbage collection using real-world examples.

Learn Object-Oriented Programming concepts in Java using simple explanations, real-world examples, practical use cases, and interview-focused examples.