[JAVA] Iterate a collection and modify

[temp temp]

    How can I  iterate  a collection  and modify at the same time ?
      Example
      public static Collection  getAncestors(
  Entity aEntity, Object aContext ){
         Collection vAncestors=new ArrayList();
                  IDocument vDocument= findDocumentByName(
  aEntity.getSuper(),  aContext);
         vAncestors.add(vDocument);
      for(
  Iterator  i=vAncestors.iterator();
  i.hasNext(); 
  ){
          getAncestors(vAncestors,  
  (IDocument)i.next(), aContext);
  } 
          return vAncestors;
  }
            
       public static void  getAncestors(
                   Collection aAncestors, 
                   IDocument   aDocument , 
                   Object aContext){
         Entity  vEntity=(Entity)aDocument.get();
         if(vEntity.getSuper()!=null){
           IDocument vDocument=    findDocumentByName(
  vEntity.getSuper(),  
  aContext);
       aAncestors.add(vDocument);
          }     
  }
       Thanks 
  Miro
    
       
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