public interface Dirtyable
Dirtyable interface indicate
  that they are able to track their own dirty state.| Modifier and Type | Method and Description | 
|---|---|
| boolean | isDirty()True if the data in the object has been modified. | 
| void | markDirty(boolean dirty)Marks the data with the specified dirty state. | 
boolean isDirty()
true if the data in the object has been modified.void markDirty(boolean dirty)
markDirty(...) instead of
  setDirty(...) so that the JavaBeans
  Introspector will not
  mistakenly identify "dirty" as a JavaBean property.dirty - If true, sets the object as being
  dirty; if false, sets the object as being up-to-date.