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

How can you create a class object if its constructor is private?

1. By inheriting the class

2. By creating an object in a subclass

3. By calling a public static method of the class meant for object creation

4. You cannot create an object if the constructor is private

The correct answer is: By calling a public static method of the class meant for object creation

Creating a class object requires calling the constructor of the class. However, if the constructor is set to private, it cannot be called outside of the class. Therefore, options A and B are incorrect as they involve inheriting or subclassing the class, both of which still require calling the constructor. Option D is also incorrect as it provides a general statement without explaining why the constructor being private is significant. Option C is the correct answer as it suggests using a public static method of the class specifically designed for object creation, bypassing the private constructor restriction.