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  1. AP Computer Science A
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Inheritance in Object-Oriented Programming

Question 1
college-boardComputer Science AAPExam Style
1 mark

What is a hash code?

Question 2
college-boardComputer Science AAPExam Style
1 mark

Which of these best describes what happens when you call equals() on two different objects with identical data if their class doesn't override equals() from Object?

Question 3
college-boardComputer Science AAPExam Style
1 mark

What is the primary benefit of overriding a method from the Object superclass in a custom class?

Question 4
college-boardComputer Science AAPExam Style
1 mark

What potential issue arises when implementing cloneable interface's clone method via calling super.clone on an object containing deep references without further action?

Question 5
college-boardComputer Science AAPExam Style
1 mark

Which option correctly states what occurs when .clone() is called on an object whose class implements Cloneable but doesn't override clone()?

Question 6
college-boardComputer Science AAPExam Style
1 mark

When using polymorphism, what would be expected if method equals() is not overridden and two distinct objects with identical states are compared using .equals()?

Question 7
college-boardComputer Science AAPExam Style
1 mark

Which statement best describes what happens when an exception is thrown but not caught within a method?

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Question 8
college-boardComputer Science AAPExam Style
1 mark

In Java why would one use 'instanceof' when dealing with objects derived from different hierarchy levels?

Question 9
college-boardComputer Science AAPExam Style
1 mark

Which method of the Object class is used to compare two objects for equality?

Question 10
college-boardComputer Science AAPExam Style
1 mark

Which method is automatically called when an object is passed to System.out.println()?