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In Java programming, multilevel inheritance refers to the concept where a class is derived from a base class and another class is derived from the derived class, forming a chain of inheritance. This allows the properties and behaviors of the base class to propagate through multiple levels of classes. To implement this, the `extends` keyword is used, and with exception handling, the program becomes more robust and error-free. A simple demonstration of multilevel inheritance can be structured using three classes: a base class `Person`, a derived class `Student` extending `Person`, and another derived class `GraduateStudent` extending `Student`. Each class adds its own attributes and methods, thereby building on the previous one. In the program, the `Person` class can store basic details like name and age, the `Student` class can add properties like roll number ____ ____ ________ ___ __________ _____ __________ ____ ________ _________ __________.
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