About Interfaces and Classes

[Siddharth Bhargava]

I found out one interesting thing that we can have a class inside an interface and an interface inside a class. Please could anyone tell me the concept behind this. I am very confused. Please explain the concept with some practical example. Thanks a lot.

[manoj sam]

Hi,

You mean class defined in an interface, or class instances (variables) in an interface definition ?

manoja.

[Siddharth Bhargava]

I mean class defined in an interface......for e.g.
public interface A
{
public class classX{

}
}

OR

public class X {
public interface A {

}
}

[Ernest Friedman-Hill]

Hi,

Welcome to JavaRanch!

Please don't post the same question to more than one forum; see our explanation here. I've deleted the other copy of this thread.

[Campbell Ritchie]

Find a copy of a book like Bruce Eckels' Thinking in Java (older editions legally available to download-try here), which has a chapter about inner classes in.

But don't expect it to be easy to understand . . .