Final, finally, finalize

Very simple

Final: cannot be xxx

Finally: XXX

Finalize: indicates that xxx

 

Final

If a class is declared as final, it means that it cannot generate a new subclass and cannot be inherited as a parent class. Declare variables or methods as final to ensure that they are not changed during use. Variables declared as final must be declared with an initial value, which can only be read and cannot be modified in future references. Methods declared as final can only be used and cannot be overloaded.

 Finally

Finally-The Finally block is provided for troubleshooting to perform any cleanup operations. If an exception is thrown, the matched catch clause is executed, and the control enters the Finally block (if any ).

 Finalize

Finalize, Java technology allows the use of the finalize () method to clean up objects before the Garbage Collector clears them from the memory. This method is called by the garbage collector when it determines that this object is not referenced. It is defined in the object class, so all classes inherit it. Subclass overwrites the finalize () method to sort system resources or perform other cleanup tasks. The finalize () method is called before the Garbage Collector deletes an object.

 

I really want to raise a dog...