Ace Java 2025: Rock Your 'Thinking in Java' Challenge!

Question: 1 / 510

What does polymorphism allow in object-oriented programming?

Objects to change their type at runtime

A single interface to be used for different underlying forms of data

Polymorphism allows for a single interface to be used for different underlying forms of data. This means that although an object may have many different forms or classes, it can be used interchangeably through a common interface.

Option A is incorrect because objects cannot change their type at runtime. Once an object is created, its type is fixed and cannot be changed.

Option C is also incorrect because objects cannot exist in multiple states simultaneously. Objects can only have a single state at any given time.

Option D is incorrect because objects do not automatically delete themselves. The programmer is responsible for managing the memory of the objects they create.

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For objects to exist in multiple states simultaneously

For objects to automatically delete themselves once they are no longer needed

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