hi guys, just i'm a beginner to kotlin progra, any one can explain what is the difference between ab...

# getting-started

[rajendhiraneasu]

hi guys, just i'm a beginner to kotlin progra, any one can explain what is the difference between abstract and interface in kotlin?

[marstran]

rajendhiraneasu: Basically the same as in Java. An abstract class can contain state, but an interface cannot. Also, a class can implement any number of interfaces, but it can only extend one class.

[rajendhiraneasu]

i got your second point, but can you please explain bit about the contain state?

[rajendhiraneasu]

@marstran

[marstran]

By the way, please don't spam all channels with the same question. This channel is suited for these kinds of questions.

[rajendhiraneasu]

@marstran sure

[marstran]

You can define val a = 5 in an abstract class. An interface can only define val a: Int. The class that implements the interface has to specify the value of a.

[rajendhiraneasu]

but in java this abstract and interface contain this state right?

[rajendhiraneasu]

i.e. we can define and initialize the value in both abstract and interface right?

[rajendhiraneasu]

also in java interface does not have the method definition nah... but here in kotlin it works irght?

[rajendhiraneasu]

thanks for the help @marstran, sorry if i'm disturbing a lot

[dagguh]

Java interfaces cannot contain instance fields, only constants

[rajendhiraneasu]

thanks