Practice Object Comparison (5.10) - Chapter 5: Objects

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9 questions

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6 sample questions

Question 1.
What does == compare in Java?
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Think about what `==` really checks between two variables.
Question 2.
What is the default behavior of .equals()?
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Recall how objects are treated in memory.
3Question 3.
What does the == operator check when applied to objects?
- Content equality
- Reference equality
- Both
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Think about what it means to point to the same object.
4Question 4.
Is s1.equals(s2) true if s1 and s2 are two different objects with identical attributes?
- True
- False
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Consider how equality is defined without overriding.
Question 5.
Create a Book class and implement equals() so that two books are considered equal if they have the same title and author.
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What attributes must you compare to ensure equality?
Question 6.
Imagine a software application that tracks student records. How would you ensure that two student objects denote the same student when compared?
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What unique attributes can reliably signify the same person?

5 more questions in this section. Enroll free to practise them all.