Comparable Interface in Java | Collections class | Comparing Objects | Java Full Course #36
In this lecture, we dive deep into the Comparable Interface in Java and understand how sorting actually works behind the scenes.
If you've ever wondered:
How does Collections.sort() work?
How does Java know which object is bigger or smaller?
What exactly does compareTo() return and why?
This video answers everything from first principles — so you don’t just memorize, you actually understand.
What You’ll Learn:
Why Comparable interface is needed
Problem with sorting custom objects
How compareTo() works internally
Understanding return values (+ve, -ve, 0)
Ascending vs Descending sorting logic
Why returning 0 can be dangerous
Real examples with custom classes
How Collections.sort() uses Comparable
Introduction to Collections utility class
Why Learn Java?
Java is one of the most powerful and widely used programming languages in the world.
It is used in:
Backend development
Enterprise applications
Android development
Banking systems
Large-scale distributed systems
If you want to master Data Structures, Spring Boot, Microservices, or System Design, Java fundamentals are essential.
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