Practice Interface (2) - Chapter 12: Inheritance, Interface, and Polymorphism

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10 questions

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3 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 is an interface in Java?
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Think about what methods are defined but not completed in an interface.
Question 2.
Can a class implement multiple interfaces?
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Consider the flexibility interfaces provide.
3Question 3.
What is true about interfaces in Java?
- They can contain concrete methods
- They can be instantiated
- They define a contract for classes
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Think about the purpose of defining interfaces.
4Question 4.
True or False: A class can implement multiple interfaces in Java.
- True
- False
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Recall the benefits of using interfaces.
Question 5.
Create a Java interface named Employee, specifying methods for getting employees' details and programming roles. Then implement this interface in a class named SoftwareEngineer.
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Think about what kind of details an employee might have.
Question 6.
Discuss how you would design an interface for a generic logging mechanism that different classes can implement. Consider which methods are essential.
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Consider logging types you often use in applications.

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