🚀 As a Java developer, it's essential to have a solid understanding of core Java concepts, including syntax, variables, data types, control structures, and object-oriented programming principles like inheritance, polymorphism, encapsulation, and abstraction. Mastering the Java Collections Framework is also critical, as it provides the foundation for efficiently managing data using structures like lists, sets, and maps. You should be familiar with Java’s multithreading and concurrency model, including creating threads using Runnable, Thread, or ExecutorService, and managing thread safety through synchronization and immutability. Additionally, understanding Java’s I/O mechanisms, such as streams for input/output operations and file handling, is crucial for building applications that manage data and resources effectively. As you advance, you'll need to dive deeper into memory management, garbage collection, exception handling, and generics to write efficient and robust Java applications.
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