Java Programming: From Introduction to Enterprise-Level Development

What You Will Learn (Module Breakdown)

Module 1: Java Environment Setup & Core Basics (4 Hours)

• Environment Configuration: Step-by-step installation of JDK 17 on Windows/Mac, environment variable configuration, and IntelliJ IDEA installation & optimization.
• Core Syntax: Variables, data types, operators, conditional statements (if-else, switch), loop statements (for, while, do-while), and string manipulation.
• Exception Handling: Try-catch-finally blocks, custom exceptions, and common runtime exception solutions (key for enterprise project stability).
• Hands-On Exercise: Write a student score management tool to implement add/delete/modify/query functions for score data.

Module 2: Object-Oriented Programming (OOP) – The Soul of Java (6 Hours)

• OOP Core Pillars: Encapsulation, inheritance, polymorphism – explained with real business scenarios (e.g., user role management in e-commerce systems).
• Class & Object Operations: Class definition, constructor usage, access modifiers (public, private, protected), and static members.
• Abstract Classes & Interfaces: Differences between the two, usage scenarios, and how to achieve code decoupling (a must for enterprise architecture design).
• Java Collection Framework: Master ArrayList, HashMap, HashSet – replace traditional arrays to manage complex data efficiently.
• Hands-On Exercise: Reconstruct the student score management tool with OOP thinking to improve code reusability and scalability.

Module 3: IO Streams & Database Integration (5 Hours)

• IO Stream Fundamentals: Byte streams & character streams for file reading/writing (e.g., export score data to Excel files).
• JDBC Database Operation: Connect to MySQL database, write CRUD SQL statements, and use prepared statements to prevent SQL injection.
• Data Persistence: Solve the problem of data loss after program restart (core requirement for enterprise-level data storage).
• Hands-On Exercise: Connect the score management tool to MySQL to realize persistent storage of student data.

Module 4: Enterprise-Level Project Practice – E-Commerce Order Management System (10 Hours)

• Project Architecture Design: Layered architecture (Presentation Layer, Business Logic Layer, Data Access Layer) – the standard architecture for 90% of enterprise Java projects.
• Core Function Development:
  1. User login authentication (verify username/password against database)
  2. Order creation (associate user information and product data)
  3. Order query (support conditional search by order number/user ID)
  4. Order cancellation (update order status and release inventory)
• Enterprise Development Specifications: Code naming conventions, annotation writing, and log recording (align with team collaboration requirements).
• Project Optimization: Code refactoring, performance tuning, and concurrent request processing (improve system stability under high traffic).

Course Highlights