This interface defines no methods or variables, but indicates that the class that implements it may be cloned (i.e., copied) by calling the Object method clone(). Calling clone() for an object that does not implement this interface (and does not override clone() with its own implementation) causes a CloneNotSupportedException to be thrown.
public interface Cloneable { }
CharacterIterator
BitSet, BreakIterator, Calendar, Collator, Date, DateFormat, DateFormatSymbols, DecimalFormatSymbols, Format, GridBagConstraints, Hashtable, ImageFilter, Insets, Locale, NumberFormat, TimeZone, Vector