I didn't know that inner classes could be defined in the [Java] interface

I think that only method definitions and constant definitions can be defined in the interface It was different, so it was just a memo

`Hoge.java`


public interface Hoge{

  public int A = 10; //Definition of constants
  
  public void hoge(); //Method definition

  public class InnerClass{  //Inner class definition
  }
}

I didn't know that an inner class could be defined.

reference

http://yuroyoro.hatenablog.com/entry/20080707/1215431467 https://teratail.com/questions/36600 http://www.atmarkit.co.jp/ait/articles/1007/27/news103.html

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