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Which method is called when Object is typecasted to parent

原文 2018-05-11 07:04:17 1 1 java

I know that this must have been asked before, but I'm not sure how to search for this.

If I have a Object of class B that extends class A, If I type cast this object to class A and then call a overriden method on this object, which method will be called? A's or B's?

1 answers

The real class of an object determines with methods are called.

Those casts, and types that you are using in your source code are not really meaningful at runtime. You rather look at them as a way to enable human coders to do their job.

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Related Question How to access a typecasted object's method directly? which object method of interface implementation will be called When overriding the @PostConstruct method, is the method in the parent called when a child is created? How to know, which child are called static parent method? How to define the map as a constant object instead of a method which will be created every time when it is called Can an object know from which object its method is called? Method not returning same when called on the same object When hascode method will be called for my object Which method will be called when overriding a method with different parameters in the following case? JPA child doesn't persist when parent persist method is called

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Which method is called when Object is typecasted to parent

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solution1 5 ACCPTED 2018-05-11 07:07:31

solution1
5 ACCPTED 2018-05-11 07:07:31