Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Dive into the depths of Java with our quiz based on "Thinking in Java, Fourth Edition" by Bruce Eckel. Test your knowledge, solidify concepts, and prepare for certification with challenging questions and insightful feedback.

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What effect does passing an object to a method have on the original object in Java?

  1. The original object cannot be altered

  2. The method receives a copy, leaving the original unchanged

  3. Any changes made in the method affect the original object

  4. The original object is cloned

The correct answer is: Any changes made in the method affect the original object

When passing an object to a method in Java, the method actually receives a reference to the original object, not a copy. This means that any changes made to the object in the method will also affect the original object, as they both refer to the same object in memory. Option A is incorrect because the original object can still be altered by the method. Option B is incorrect because a copy is not created and the original object is still accessible. Option D is incorrect because cloning creates a completely separate copy of the object.

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