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When a nonfinal class defines a clone() method that does not call super.clone(), cloning a subtype will produce an object of the wrong type.
Wiki Markup clone()}} method \ [[API 2006|AA. References#API 06] \] says:
By convention, the returned object should be obtained by calling
super.clone. If a class and all of its superclasses (exceptObject) obey this convention, it will be the case thatx.clone().getClass() == x.getClass().
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Automated detection is straightforward.
Bibliography
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MET15-J. Do not use deprecated or obsolete classes or methods 05. Methods (MET) MET17-J. Do not increase the accessibility of overridden or hidden methods