Can a Java class extend more than one class? Why or why not?

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No, a Java class cannot extend more than one class directly. This is because Java does not support multiple inheritance through classes. In other words, a class in Java can only inherit from one superclass using the extends keyword.

The main reason Java avoids multiple inheritance through classes is to prevent ambiguity and complexity, particularly the Diamond Problem. The Diamond Problem occurs when two super classes of a class have methods with the same signature. If Java allowed multiple inheritance, the compiler wouldn't know which method to inherit, leading to confusion and potential errors.

To achieve the benefits of multiple inheritance without the problems, Java provides interfaces. A class can implement multiple interfaces even though it can extend only one class. Interfaces define method signatures without implementation, so there's no ambiguity when a class implements multiple interfaces—it just provides its own implementation.

In conclusion, Java disallows multiple class inheritance to maintain simplicity and avoid ambiguity, but supports multiple inheritance through interfaces for flexibility and clean design.

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