Entities abstract class to implement common things about all groups of entities.
Entities can be added, removed, updated, and retrieved.
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private void deleteEntities(final Entities[] entitiesTab) throws ActionException { for (int i = 0; i < entitiesTab.length; i++) { final Entities entities = entitiesTab[i]; final Collection entitiesCollection = new Vector(entities.getCollection()); for (final Iterator iter = entitiesCollection.iterator(); iter .hasNext();) { final Entity entity = (Entity) iter.next(); entities.remove(entity); } } }