Listener support for a HashSet

[Remedy]

Hello,
Is there a way to keep informed of changes (add and remove) that undergoes a HashSet (or more generally a class implementing the interface Set)? I found nothing other than extending the HashSet class and add support for listeners, Is there a different way to do this, if there is one then i am interested. Thank you in advance for your help.

[WinDoWLoCuS]

Hello,
- First, rather than inheriting it more flexible to delegate a set that you pass a parameter, so you can intercept any set. (the same kind of operation that take Stream as a parameter a Stream)
Then, for the achievement is not so galley
- or you quit Eclipse generates allows you to automatically create the delegation on all methods of a member.
-is the fact you through introspection (less fit) using a Proxy class: method "invoke" is called for all method calls of an interface, and then you can remember the true implementation always thinking.

[Remedy]

Hello,
Firstly thank you for your reply. I think I'm going to take a class that delegates the work without going through the Mechanisms of reflection. This is really too heavy I think for such classes. I started in eclipse, how you generate the delegate methods? Thank you again. If you have any answer for this then help let me know.

[Windowed]

Hello,
In another class, you declare an attribute of type Set. You did right "Sources" - "Generate Delegate Methods" and you select all the methods of the Set. Then you can be set to implement your class, and it should compile. I hope you are understanding what I am trying to explain to you. If you have any queries regrading this then do post back and we will try to solve your query.

[InterNetWorKed]

Hello,
I have a code with me, just check it out, hopefully it will help you, I think so. Here is the code

Public class DelegateSet
{
   / / The set 
   private Set sets;
   
   / / Play events
   private Listener lst;
   
    Public DelegateSet(Set sets, Listenet list)
    {
              this.sets  = Sets;
              lst = list;
    } 
 
    Public boolean add(Object e) {
        lst.add(e);
        return sets.add(e);
    }
    
      .........
 
}

[SoftWore]

Hello,
Here is another code performing the same task, this is almost similar to the above code but I think this is more effective.

Public class MyClass{
Public void monTraitement(String name, Object o){
/ / Here I capture the method will "name" applied to the object "o"
}
}
Public class delset implements Set
{
   / / The set 
   private Set set;
   
   / / Play events
   private MyClass lst;
   
    Public delset(Set set)
    {this.set = Set;
lst = new MyClass();
}
 
 Public boolean add(Object e) {
       myClass.mntr("add"e);
        return sets.add(e);
    }
 
...