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1. 20.1 : Object Class in Java | java.lang Package Explained [Abdul Bari] Java Course
In this lecture, you will learn about the
2. 11.2 : Class vs Object — [Abdul Bari] Java Course
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3. Core Java - Java.Lang.Package - Introduction and Object class Part-1
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4. 13.2 : Practising Abstract Class — [Abdul Bari] Java Course
Hands-on practice with Abstract
5. 13.3 : Example 1 — Abstract Class — [Abdul Bari] Java Course
A simple example demonstrating how Abstract
6. 20.4 : Math Class in Java | java.lang Package [Abdul Bari] Java Course
Learn how to perform mathematical operations in
7. 11.11 : Constructors — [Abdul Bari] Java Course
Understand constructors in
8. Java Classes & Objects
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9. 10.10 : Variable Arguments — [Abdul Bari] Java Course
Learn how to use varargs (variable arguments) in
10. 11.1 : Principles of Object-Oriented Programming — [Abdul Bari] Java Course
Learn the four main OOP principles in
11. 20.2 : Wrapper Classes (Int,double,boolean) | Autoboxing & Unboxing [Abdul Bari] Java Course
This lecture provides a complete
12. Core Java With OCJP/SCJP: java.lang.package Part-1 || Introduction||object class||toString()
13. 11.15 : Array of Objects Challenge — [Abdul Bari] Java Course
Practice creating and using arrays of
14. Java Programming Unit 2 | Practicals 1 to 20 | Classes & Objects | OOP Concepts | Java Lab Programs
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20 1 Object Class In Java Java Lang Package Explained Abdul Bari Java Course Information Guide
Overview on 20 1 Object Class In Java Java Lang Package Explained Abdul Bari Java Course
![20.1 : Object Class in Java | java.lang Package Explained [Abdul Bari] Java Course Update](https://i.ytimg.com/vi/Zj6TfoWEER0/mqdefault.jpg)
Important Facts
![Details 11.2 : Class vs Object — [Abdul Bari] Java Course News](https://i.ytimg.com/vi/u__oQqU_RcQ/mqdefault.jpg)
Recent Updates
![13.3 : Example 1 — Abstract Class — [Abdul Bari] Java Course](https://i.ytimg.com/vi/cq3Prp4SEO0/mqdefault.jpg)
![20.4 : Math Class in Java | java.lang Package [Abdul Bari] Java Course](https://i.ytimg.com/vi/o7NFTutlSNQ/mqdefault.jpg)
![11.11 : Constructors — [Abdul Bari] Java Course](https://i.ytimg.com/vi/l0zCg6IUmMc/mqdefault.jpg)
![10.10 : Variable Arguments — [Abdul Bari] Java Course](https://i.ytimg.com/vi/wsvpvMAsOys/mqdefault.jpg)
![11.1 : Principles of Object-Oriented Programming — [Abdul Bari] Java Course](https://i.ytimg.com/vi/R_jAbcCHPKE/mqdefault.jpg)
![20.2 : Wrapper Classes (Int,double,boolean) | Autoboxing & Unboxing [Abdul Bari] Java Course](https://i.ytimg.com/vi/9gTJqg6f7bA/mqdefault.jpg)
![11.15 : Array of Objects Challenge — [Abdul Bari] Java Course](https://i.ytimg.com/vi/BkA7DV3Ytec/mqdefault.jpg)
Full Guide
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Last Updated: August 11, 2026
Conclusion
![Information 13.2 : Practising Abstract Class — [Abdul Bari] Java Course Guide](https://i.ytimg.com/vi/L7ZuWyY8Tbc/mqdefault.jpg)
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