Design Patterns in Java Theory

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Best practices are called as Design Patterns.
Principles of Design Patterns:
1. Composition over inheretance is always preferred.
2. Code for interface not for implementation.

Types of Design Patterns:
1. Creational
2. Structural
3. Behavioural

A. Creational Design Pattern:
1. Singleton
2. Factory
3. Abstract factory
4. Builder
5. Prototype

B. Structural Design Patterns
6. Adapter
7. Composite
8. Proxy
9. Fly weight
10. Facade
11. Bridge
12. Decorator

C. Behavioural
13. Template Method
14. Mediator
15. Chain of Responsibility
16. Observer
17. Strategy
18. Command
19. State
20. Visiter
21. Iterator
22. Interpretor
23. Memento

In total there are 23 basic design patterns and more.

Trainer: Navin Reddy

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Navin Reddy

[muhammadjahanzeb]

cant tell how much your videos have helped me throughout my graduation :D Thank you Sir

[_erayerdin]

One week to learn Java.
Next week to make softwares.

I remember when I learned Python (which is my second attempt to do programming after PHP), I was struggling with the OOP concept. So, I read some stuff and told myself: "What about doing a crazy stuff? To learn OOP, I can put myself into Java, which is OOP obligatory language.". And yeah, it worked. In a week, I understood the basics of OOP thanks to Java and got back to Python again.

Last month, while I was writing some stuff in Django/Python, I realized that I would suffer for each extension. Python didn't make sense in time. So I came back to Java again.

I knew the basics. What is class, interface, et cetra, good. However, Java's making sense to me took two whole years. So, yeah, learning Java depends, but understanding it takes a lot of time. Building, dependency management and those stuffs are too complex.

By the way, guess why I'm here, for design patterns to make sense to me. Thanks for great work. I'm excited to get into design patterns.

[venkatkumar]

Navin, i really appreciate and thank you the effort which you have invested into this channel. So many subjects tought in very simple terms. I recommend any one who approaches me for some thing.

[parmveersingh]

Hello sir, Your tutorials are very useful and the way you deliver these tutorials is wonderful . Please provide more tutorials on advanced topics of Java like JTables, Java Swing etc.Thanks

[msindia]

Hi Sir, Thanks a lot for your crisp and to the point tutorials. These are really awesome and never found anyone explaining the concepts so clear. After watching this I don't feel like watching any other channels for any additional content. Can you help us by adding the videos for other design patterns like - facade, bridge, ...?

[yhaouatis]

Hey Navin,

I'd like to thank you so much for your awesome DP course you provided to us. This playlist holds only 5 design patterns and there is another playlist covers the singleton DP.
Where can we find the rest of them?

Thanks again,
Youcef.

[krushnnabaviskar]

watching now in 2024, evergreen content

[ruchabhutada]

Hello sir,
Thank you for sharing this knowledge.
My question is : which design pattern is important for interview question for experienced Java Dev ? Which design patterns is asked in java interview for experienced ?

[sasikumarm]

It could be great if you please post video about 1.)Composition over Inheritance 2.) Code to Interface rather than implementation

[ravivyas]

Navin, i really like your videos. I always search for your java videos because they are quite understandable.Thanks!!
I wanted to learn about Decorator pattern, Command pattern, chain of responsibility pattern and Observer pattern. But it seems we have not added those in this series.

[manojpiumal]

This is very useful youtube channel... GoodLuck sir..!!!

[mbrajucse]

These videos are very useful to developers...Sir please upload more videos...like framework videos

[sayalighonge]

Please upload more design patterns tutorials.

Thank you!!

[hakimakbary]

Very much appreciated because you made it in English.

[ctyfwdg]

I am starting learning design pattern today, because my manager told me to improve my code style.

[nishroop]

Hi, Your videos have helped us lot. 11 videos on design pattern helped us lot..i would have been more happy if you would have uploaded all 23 design patterns

[owaisahussain]

Loved your weird "pakao" joke :-)

[ZaineAmanda]

I see comments that your classes are very good, I would like to understand you, but my mother tongue is Portuguese, I study English but it is still difficult for me to understand. If you put official subtitles or transcripts, not the automatically generated ones, it would help me a lot.

[josuanaiborhunaiborhu]

sir, please teach about sorting and binary tree. The way of your explanation is very clear

[rahulvijayam]

Sir Please do Videos of Remaining Structural Design Patterns(Brige, Decorator, Facade, Flyweight and Proxy)