Core Java Hands-On: Build a Full CLI App With Me
Learn Java programming with hands-on coding! Master data structures, file handling, and real-time tracking. Interactive and engaging.
Course Content
Core Java Hands-On: Build a Full CLI App With Me is a beginner-level Udemy course taught by Koushik Kothagal. It runs 1h 30m, is taught in English, and includes a certificate of completion. 3 students have enrolled. It is a paid course, first published March 2025.
Ready to master Java application development? This hands-on course takes you beyond basic syntax and into building a real-world Java project: a fully functional command-line (CLI) Time Tracker app. Code alongside the instructor as we build this application from scratch, applying core Java concepts in a practical, workplace-simulating scenario.
You'll gain practical skills in essential Java programming techniques, including:
- Command Line Input: Learn how to effectively handle user input via the command line in your Java applications.
- Object-Oriented Programming (OOP): Structure your code with well-defined classes and enums for improved organization and readability.
- Data Persistence: Implement data storage strategies, persisting data both in-memory and using file I/O for reliable data management.
- Time Tracking Logic: Develop robust start/stop logic for managing tasks, setting categories, and accurately tracking time – a core feature of many real-world Java applications.
- Data Structures: Utilize powerful data structures like HashMaps to efficiently store and manage active tasks.
- Date and Time Handling: Leverage Java's Duration class for precise time calculations.
- Code Modularity: Discover strategies for organizing Java code into modular components for better maintainability.
- CLI Interface Design: Create clean interfaces for your CLI commands, enhancing user experience.
- Error Handling & Logging: Implement best practices for error handling and logging to ensure application stability.
Beyond the core build, you'll learn valuable refactoring techniques to improve code maintainability. Transform scattered functionality into robust, reusable methods and utility classes. This ensures you not only complete a fully operational Time Tracker app but also develop the skills to apply these techniques to other Java projects.
By the end of this course, you'll be able to:
- Translate user requirements into functional CLI features.
- Manage data efficiently within your Java applications.
- Produce informative reports based on tracked data.
Gain the confidence and technical knowledge to tackle real-world Java development challenges. Join us for an interactive, end-to-end coding experience that will rapidly elevate your Java proficiency! This course is perfect for anyone looking to improve their Java skills and build practical Java applications.
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