Java Learning Path: 50-Day Plan (Beginner to Advanced)

This comprehensive 50-day guide will help you progress from Java basics to advanced concepts, including hands-on practice and project work.

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Days 1-5: Java Fundamentals

• Introduction to Java, history, and features
• Setting up JDK and IDE
• Writing, compiling, and running your first Java program
• Java program structure
• Variables, data types, and operators
• Input/output with Scanner
• Control flow: if, else, switch, loops (for, while, do-while)
• Break and continue statements

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Days 6-10: Methods and Arrays

• Defining and calling methods
• Method parameters, return types, overloading
• Introduction to arrays (1D, 2D)
• Array operations: traversal, insertion, deletion
• Enhanced for loop
• Multidimensional arrays

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Days 11-15: Object-Oriented Programming (OOP) Basics

• Classes and objects
• Fields, methods, and constructors
• The this keyword
• Encapsulation, inheritance, polymorphism (overview)
• Access modifiers
• Static members
• Method overriding

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Days 16-20: Advanced OOP Concepts

• Abstract classes and methods
• Interfaces
• Final keyword
• Inner and anonymous classes
• Object class methods (toString, equals, etc.)
• Packages and imports

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Days 21-25: Exception Handling and Java API

• Exception hierarchy
• Try-catch-finally blocks
• Throw and throws
• Custom exceptions
• Java API overview
• Common classes: String, Math, Wrapper classes

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Days 26-30: Collections Framework

• Introduction to collections
• List, Set, Map interfaces
• ArrayList, LinkedList, HashSet, TreeSet, HashMap, TreeMap
• Iterators and enhanced for loop
• Generics

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Days 31-35: File I/O and Streams

• File handling (File, FileReader, FileWriter)
• Buffered streams
• Serialization and deserialization
• Reading and writing binary files
• Try-with-resources

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Days 36-40: Multithreading and Concurrency

• Threads and Runnable interface
• Thread lifecycle and states
• Synchronization
• Inter-thread communication
• Executors and thread pools

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Days 41-45: GUI Programming (Swing)

• Introduction to Swing
• JFrame, JPanel, JButton, JLabel, JTextField
• Event handling
• Layout managers
• Building simple GUI applications

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Days 46-48: Java Networking

• Networking basics (TCP/IP, ports)
• Sockets and ServerSockets
• Client-server communication
• URL and HttpURLConnection

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Days 49-50: Final Projects and Best Practices

• Build a mini-project (e.g., address book, chat app, or calculator)
• Code organization and documentation
• Debugging and testing basics
• Java coding standards and best practices
• Resources for further learning

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Happy Learning!