Java Tutorial For Beginners 28 - Abstract Methods and Classes

Java Abstract Classes. java - What are abstract classes and abstract methods.

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Verwandte Suchanfragen zu java abstract classes
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[sudiptochatterjee]

Sir, your videos are really good for a beginner and is of immense help.
I also humbly recommend, if you could change the example of the Bank on this and the previous lesson, to some thing more appropriate, like Animal. Conceptually, a Bank class once instantiated, can create Bank ABC and DEF etc. and each with it's specific interest rate. But an Animal is an abstract concept and can only be substantiated with more well-defined classes of animals, like mammals and amphibians and reptiles and so on.

[jacksonmckenzie]

You should change the batteries in your fire alarm.

[AShahwani]

I didn't get it. What's the whole idea of using 'abstract classes' ?? I mean what's the use of it ?

[jingjingguoguo]

1.5* speed is a new world ! Highly recommended !

[SmartProgramming]

nice example, easily grabbed this, good one👍👍

[dharanirenu]

hello sir, could u please explain me about the difference between polymorphism and abstract class..and even with inheritance... how they modified with one another.... seeking your reply...

[MOHAMMADALI-rvwl]

hi thank you very much but I couldn't download the video it looks like its damaged can you help with ?

[chetnasingh]

y u r taking same classss exm of bank again n again sir a lot of example r there pls change it

[himanshuverma]

why abstract method not working on Strings ?

[its_me]

what and where is the use of abstract class and methods?

[elchinshabanov]

Hi, before I liked your videos but gradually I dislike it because you are always taking previous lesson and continuing doing new lesson on it making some amendments , it causes puzzling and sometimes I am taken aback

[ArkoSarkar]

So the abstract method can have any data or code in it or only a subclass can do so?

[Glauberz]

whats the purpose of declaring a class abstract if we can´t create a object and assign it to the class?
i didn´t understood this, for example;


public class myclass
{
public static void main(Strings[] args)
{
Bank abc = new Bank();//This object can´t be created because 'BANK' class is abstract.
}
}

abstract public class Bank
{
int getInterestRate();
}

how we will set Interest Rate if we can´t do this using ?

abc.setInterestRate();

[MakkalJanaathipathi]

I saw yours past all Java videos I understood all of them but unfortunately I didn't get anymore in this video please help to learn abstract method and class

[shravanidarekar]

Very badly explained...I followed your other video which were very good but this one very badly explained.... its seem u were not in good mood when u made this video ...please replace with another video.

[bhanupratapsharma]

Nice videos but your voice puts me to sleep & I cannot pay attention to the video for more than 45 seconds

[gtron]

please talk louder, your making me sleepy and not understand anything

[sabeerali]

you didn't tell how to call a abstract class.. u r not good lecture..k