Inheritance in Java
Inheritance in Java - Important Points
| 16. | Which of the following is an example of multilevel inheritance? |
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A. Class A extends Class B, Class C extends Class A
B. Class A extends Class B, Class B extends Class C
C. Class A extends Class B, Class A extends Class C
D. Class A extends Class B, Class B extends Class A
View Answer Discuss Work SpaceAnswer: option a
Explanation:
Class A extends Class B, Class C extends Class A is an example of multilevel inheritance.
| 17. | Which keyword is used to implement method overriding in Java? |
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A. final
B. static
C. abstract
D. override
View Answer Discuss Work SpaceAnswer: option d
Explanation:
The 'override' keyword is used to implement method overriding in Java.
| 18. | Which type of inheritance is used in Java for interfaces? |
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A. Single inheritance
B. Multiple inheritance
C. Hybrid inheritance
D. Hierarchical inheritance
View Answer Discuss Work SpaceAnswer: option b
Explanation:
Multiple inheritance is used in Java for interfaces.
| 19. | Which method of the Object class is used to return a string representation of an object? |
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A. hashCode()
B. equals()
C. toString()
D. getClass()
View Answer Discuss Work SpaceAnswer: option c
Explanation:
The 'toString()' method of the Object class is used to return a string representation of an object.
| 20. | Which keyword is used to create a subclass in Java? |
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A. abstract
B. final
C. static
D. extends
View Answer Discuss Work SpaceAnswer: option d
Explanation:
The 'extends' keyword is used to create a subclass in Java.