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  1. class Ideone
  2. {
  3. 	public static void main (String[] args) throws java.lang.Exception
  4. 	{
  5. 		// your code goes here
  6. 	}
  7. }
  8.  
  9. class Message { }
  10. class ObjectMessage extends Message { }
  11. class Session { }
  12.  
  13. /*
  14. interface Foo {
  15.     void method();
  16. }
  17.  
  18. abstract class BaseFoo implements Foo {
  19. }
  20.  
  21. class DerivedFoo extends BaseFoo {
  22.     @Override
  23.     public void method() {
  24.     }
  25. }
  26. */
  27.  
  28. interface MessageFactory<T extends Message> {
  29.  
  30.     public T create(Session session);
  31. }
  32.  
  33. abstract class MessageType<T extends Message> implements MessageFactory<T>{
  34.  
  35.     public static final MessageType<ObjectMessage> PLAYER_REGISTER = new MessageType<ObjectMessage>() {
  36.  
  37.         @Override
  38.         public ObjectMessage create(Session session) { //Error, remove @Override annotation
  39.             return null;
  40.         }
  41.     };
  42.  
  43.     private MessageType(){ }
  44. }
  45.  
Success #stdin #stdout 0.1s 320576KB
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https://ideone.com/hMBPMX
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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