Practice The Static Keyword (4.9) - Chapter 4: Object-Oriented Programming (OOP) in Java

Practice: The static Keyword

Lesson 4.9Object-Oriented Programming (OOP) in Java

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
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Quiz
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6 sample questions

Question 1.
What does the static keyword signify?
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Think about how a class and its instances interact.
Question 2.
Can you name a common use of static methods?
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Think of functions that perform calculations.
3Question 3.
What does the static keyword indicate about a class member?
- It belongs to an instance
- It belongs to the class
- It cannot be changed
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Think about whether the member is shared or unique.
4Question 4.
True or False: Static variables are created for each instance of a class.
- True
- False
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Consider how many copies exist for shared data.
Question 5.
Create a class called Library that counts the number of books added to it using a static variable. Write methods to add a book and display the total count.
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Think about how each addition of a book should affect a shared count.
Question 6.
Explain how changing a static variable from an instance method could lead to side effects. Provide an example to illustrate.
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Consider how one instance's change could impact others.

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