09-02 Java polymorphism
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Java
The premise and characteristics of polymorphism
Benefits of polymorphism:
Disadvantages of polymorphism
Solving the disadvantages of polymorphism;
Understanding of polymorphic problems:
Explanation of memory in polymorphic inheritance:
Diagram of object change memory in polymorphism:
Class conversion exception in polymorphism:
猫狗案例
不同地方饮食文化不同的案例
Look at the program and find out the results:
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