Which of the following statements regarding instance variables are false? You can select more than one statement.Group of answer choicesInstance variables are defined inside a method.Instance variables maintain the "state" of an object.An instance variable is unique to an object.An instance variable is unique to a class.An attribute of a class can be an instance variable.
Question
Which of the following statements regarding instance variables are false? You can select more than one statement.Group of answer choicesInstance variables are defined inside a method.Instance variables maintain the "state" of an object.An instance variable is unique to an object.An instance variable is unique to a class.An attribute of a class can be an instance variable.
Solution
The following statements regarding instance variables are false:
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"Instance variables are defined inside a method." - This is false. Instance variables are not defined inside a method. They are defined inside a class but outside any method.
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"An instance variable is unique to a class." - This is also false. An instance variable is not unique to a class; it is unique to an instance (or object) of a class. Each instance of a class has its own copy of the instance variable.
The other statements are true:
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"Instance variables maintain the 'state' of an object." - This is true. The values assigned to instance variables constitute the 'state' of an object.
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"An instance variable is unique to an object." - This is true. Each instance of a class has its own copy of the instance variable.
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"An attribute of a class can be an instance variable." - This is true. In fact, instance variables are often referred to as attributes or properties of a class.
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