This module introduces you to key object-oriented programming concepts in Java, including inheritance, polymorphism, and the differences between interfaces and abstract classes. It discusses how inner classes enhance code organization and functionality.

This module explores the Collections Framework. It focuses on using lists, sets, queues, and maps for dynamic data management. You’ll develop the knowledge and skills required to use collections effectively in real-world situations.

In this module, you'll focus on essential aspects of file handling. You will gain knowledge and hands-on skills with creating, reading, and writing files, managing directories, and implementing piped streams.

In this module, you will discover and practice using Java's built-in date and time classes to format dates, display dates, and understand time zones. A vital part of many day-to-day applications, you'll gain the skills needed to programmatically calculate differences for dates and times and to incorporate time zones into those calculations.

In this module, you will apply the Java skills you practiced throughout this course to develop a personal mood tracker application that allows users to create, edit, and manage mood entries securely. As you complete this course take advantage of the course wrap-up video and course glossary to review what you've learned. Then, check out the next steps for more opportunities to expand your Java knowledge