How to BREAK and FIX Singleton Design Pattern

How to BREAK and FIX Singleton Design Pattern | Interview Question

Рет қаралды 30,324

Жыл бұрын

Head to cutt.ly/spring_micro and use Coupon Code SUPER70 to get 70% off the course.
The singleton pattern is implemented by creating a class with a method that creates a new class instance if one does not exist. An instance already exists simply returns a reference to that object.
To ensure that the object cannot be instantiated any other way, the constructor is made private.
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#singleton #softwaredesign #java #DailyCodeBuffer

Пікірлер: 69

@thedarkhorseevil2635 Жыл бұрын

Bhai faad .....abhi tk sbse best video ..no bakwas no makhan malayi.. only main content in basic and easy language

@neon0wl2107 Жыл бұрын

Thank you for listening to our suggestions and starting with design pattern. I hope this is a series and you cover some more patters, well the most common ones at least.

@DailyCodeBuffer Жыл бұрын

Thanks 🙏 Planning for it

@akhiljuluru927 Жыл бұрын

please make all design patterns videos. Thank you for all your videos

@DailyCodeBuffer Жыл бұрын

Thanks 🙏 Yes, that is the plan

@mihirshinde4268 Жыл бұрын

Best part of your videos is: Complete Information in short time. Keep it up!

@sanskaragarwal582 Жыл бұрын

Shandar bhai! Maza aagya. Keep posting such content!

@roopkishore785 10 ай бұрын

The question was asked in MakeMyTrip Interview. about the multiple threads waiting time, you explained the synchronized Block. I was not able to answer that scenario, But now I got it. Thanks for the proper explanation.

@oshogarg5215 Жыл бұрын

in depth explaination , hats-off

@shivaanandadari6533 4 ай бұрын

Great Content brother! Appreciate it!

@TechieTaught Жыл бұрын

Great, the enum one is something I came to know after long time.

@hardworkerbig Жыл бұрын

U explain the singleton dp well..thanks

@vineettalashi 5 ай бұрын

Thanks for sharing knowledge. Respect to you brother.

@mathcss8496 Жыл бұрын

Wow nice one Shabbir 🔥🔥

@unknownxengineer 7 ай бұрын

Very straightforward..

@DailyCodeBuffer 7 ай бұрын

Thanks 🙏

@Anilkumar-reddy Жыл бұрын

Nice Explanation bro, ur the life saver

@DailyCodeBuffer Жыл бұрын

Thanks 🙏🏻

@rock_0075 11 ай бұрын

Thanks for the video, quick question how can you have the instance of a class on line 13 in the same class define?

@ipsadas4233 23 күн бұрын

Great video😊

@DailyCodeBuffer 21 күн бұрын

Glad you enjoyed

@DeepakGupta-pz4fx Жыл бұрын

Thank you Bro for this series start ...please complete alll topic of design patterns....Happy Diwali

@DailyCodeBuffer Жыл бұрын

Thanks 🙏 Yes working on it Happy Diwali

@nikantchaudhary Жыл бұрын

Design Patterns is a very complicated topic. Very good tutorials are not there on KZfaq. I hope you start the design patterns series.

@DailyCodeBuffer Жыл бұрын

Yes, working on it

@adityarathor5300 6 ай бұрын

Hi bro, Great explain Can you also define program via enum as solution against reflection.

@MrMikomi Жыл бұрын

Should have said though, great video, thanks.

@DailyCodeBuffer 8 ай бұрын

Thanks for watching!

@Telugu_europe Жыл бұрын

Very good explanation 😊

@DailyCodeBuffer Жыл бұрын

🙏🏻

@rachits21792 Жыл бұрын

Need one video on builder design pattern and where to use them. Please keep making informative videos.

@DailyCodeBuffer Жыл бұрын

Working on it

@anandpadamala451 Жыл бұрын

super explanation

@DailyCodeBuffer 8 ай бұрын

Thanks 🙏

@thedarkhorseevil2635 Жыл бұрын

Bro can you also please make videos on multithreading in brief please 🙏🙏🙏🙏

@AdityaRaj-ix5rg Жыл бұрын

Thanks for the awesome video on design patterns. Kindly make video course of apache kafka as well.

@DailyCodeBuffer Жыл бұрын

Thanks 🙏🏻 Planning on it

@user-kf5hb4dm6x Жыл бұрын

Use volatile keywords while declaring refrence variable

@dhanshyamkamath8493 Жыл бұрын

I have seen the static instance declared as volatile. What does volatile keyword do?

@rjrobinjames Жыл бұрын

Awesome bro 👌👌👌

@DailyCodeBuffer Жыл бұрын

Thanks 🙏

@nikhileshyoutube4924 Жыл бұрын

Excellent bro happy diwali

@DailyCodeBuffer Жыл бұрын

Thanks 🙏 Happy Diwali

@sagarsri4143 Жыл бұрын

Superb

@DailyCodeBuffer Жыл бұрын

Thanks 🙏🏻

@abhishekjain6559 7 ай бұрын

You can also add a Clone example to break and fix Singleton design pattern.

@rock_0075 11 ай бұрын

so you mean from line 22 the sync method will be shared across all threads?

@rishabhshah8845 Жыл бұрын

Can u make java beginners to advanced video

@MrMikomi Жыл бұрын

Shouldn't your readResolve method call the getInstance() method? Otherwise it could return null no?

@claveralvaro6245 Жыл бұрын

Holly crap i learned a lot. ty so much.

@DailyCodeBuffer 8 ай бұрын

🙏🙏

@abhishekchatterjee3750 3 күн бұрын

Once the first thread get a lock on synchonized block, the other thread will be waiting at that point , but the other threads has already passed the if condition, those are just waiting for their turn to execute the creation of the object again when the lock is released by the first thread. Is it like the if condition is going to be reevaluated again after the next thread get the lock. I am confused sinsed the synchronised block is inside the if condition. ?

@simo47768 Жыл бұрын

Really nice Still did not grasp enum example. Enum Example is too short. Not clear. How use enum to instantiate database connection ?

@shivaanandadari6533 4 ай бұрын

public enum DatabaseConnection { INSTANCE; private Connection connection; DatabaseConnection() { try { // Load the JDBC driver Class.forName("com.mysql.cj.jdbc.Driver"); // Create the database connection connection = DriverManager.getConnection( "jdbc:mysql://localhost:3306/myDatabase", "username", "password"); } catch (ClassNotFoundException | SQLException e) { throw new RuntimeException("Database connection failed!", e); } } public Connection getConnection() { return connection; } } public class DatabaseUsageExample { public static void main(String[] args) { Connection conn = DatabaseConnection.INSTANCE.getConnection(); // Use the connection for database operations // Remember to close any Statements and ResultSets, but you might not want to close the connection itself // as it is managed by the Singleton and should stay open for the lifetime of your application. } } we can use this way to create db connection using Enum.

@KratosVS Жыл бұрын

Good work brother

@DailyCodeBuffer Жыл бұрын

Thanks 🙏🏻

@KratosVS Жыл бұрын

@@DailyCodeBuffer you should do live question and answer for interviews questions. Also live project it be fire where people can do supervhst and if they tipped you super chat you can give them personal help with the thing they having problem with the project

@DailyCodeBuffer Жыл бұрын

Great Suggestion I will think about it. Thanks 🙏

@KratosVS Жыл бұрын

@@DailyCodeBuffer you can send notifications to your to subscribers. It can be big projext like fully functional full stack e-commerce website where every can pull and push the project in git and contribute to it. You can ask people if they can do something different and if they have trouble they can send certain fee and you can do personal one on one session to improve their application. While people on super chat who is having trouble you can show and what they may do wrong and answer the questions. I think it great idea it help lot of people. It will help people to see how you going about codding and why you use certain data structures over certain data structures. I will definitely join and I am pretty sure lot of people will join

@anujdosad9518 Жыл бұрын

Hi, what about using clone method? using clone method also we can break the singleton rule..

@navinkumar6388 Жыл бұрын

Just throw the clone exception if the object clone is carried out

@user-fr9jb3sm4v Жыл бұрын

Good! New cap👍

@DailyCodeBuffer Жыл бұрын

Thanks 🙏🏻

@navinkumar6388 Жыл бұрын

I have a query. Why only one DB object? If created more DB connection then it will be easy to service the concurrent request coming at same time.. right?

@DailyCodeBuffer Жыл бұрын

Yes, Absolutely 👍 This is just an example to explain singleton