Final is a modifier that can be used to modify variables, methods, and classes. When modifying a variable. Represents a variable that cannot be changed, that is, a constant. Constants need to be assigned at the time of definition or assigned by constructors, and they can only be selected; When the method is modified, the method can only be called, cannot be overridden, and when the class is decorated, the class cannot be derived from the subclass. So a class cannot be both final and abstract;
Finally is a try clause in the exception handling mechanism. Used to handle the necessary cleanup work, the fear of running a catch with a return statement finally will also run before the return;
finalized is a method defined in Object. Subclasses generally override this method to do the necessary cleanup before the object is collected by GC, which is typically called by the GC, but when overloaded with finalized, the GC simply invokes the finalized of the initial version number, explicitly invoking the initial version number of the finalized The method has very large uncertainties.
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