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To become a proficient Java developer, there are several key areas and topics you should cover. These areas span from core Java fundamentals to advanced concepts, as well as tools and best practices for software development. Here's a comprehensive list of topics to study:

1. Core Java Syntax and Basic Constructs: Understanding variables, data types, operators, control flow (if-else, loops). Object-Oriented Programming (OOP): Classes, objects, inheritance, polymorphism, encapsulation, and abstraction. Exception Handling: Try-catch blocks, custom exceptions, and the use of finally. Collections Framework: List, Set, Map, and their implementations (ArrayList, HashSet, HashMap). Concurrency and Multithreading: Threads, synchronization, concurrency utilities (ExecutorService, Future, etc.). Input/Output (I/O): Streams, readers and writers, serialization.Java Classes in Nagpurhttps://www.sevenmentor.com/java-course-in-nagpur