Thủ Thuật về Which of these can be used to fully abstract a class from its implementation 2022
Lê Bình Nguyên đang tìm kiếm từ khóa Which of these can be used to fully abstract a class from its implementation được Update vào lúc : 2022-10-14 00:50:10 . Với phương châm chia sẻ Bí kíp về trong nội dung bài viết một cách Chi Tiết 2022. Nếu sau khi Read Post vẫn ko hiểu thì hoàn toàn có thể lại Comments ở cuối bài để Admin lý giải và hướng dẫn lại nha.Java Programming Multiple Choice Questions - Interfaces
This section focuses on the "Interfaces" in Java programming. These Multiple Choice Questions (MCQ) should be practiced to improve the Java programming skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements and other competitive examinations.
Nội dung chính- Java Programming Multiple Choice Questions - Interfaces What are the implementation classes of the set interface Mcq?Which of the following is the correct way of implementing an interface salary by class manager in Java?Which keyword is used for correct implementation of an interface in C# net?Which of the following is the correct way of implementing an interface person by class doctor?
1. Which of these keywords is used to define interfaces in Java?
A. interface
B.
Interface
C. intf
D. Intf
View Answer
2. A java interface can contain _______.
A. Abstract methods(unimplemented) and implemented methods both
B. public Abstract methods
C. public static Final Variables only
D. public static Final Variables and abstract methods both
View Answer
3. Which of these access
specifiers can be used for an interface?
A. Public
B. private
C. Protected
D. All of the mentioned
View Answer
4. Which of the following is a correct interface?
A. abstract interface A abstract void print();
B. abstract interface A print();
C. interface A void print()
D. interface A void print();
View Answer
5. Which of the following classes directly implement Set interface?
A. Vector
B. HashSet
C. HashTable
D. LinkedList
View Answer
6. Which of these keywords is used by a class to use an interface defined previously?
A. Import
B. import
C. implements
D. Implements
View Answer
7. Which is the correct way to inherit and implement the interface?
A. class Cat implements IAnimal
B. class Cat import IAnimal
C. class Cat extends IAnimal
D. None is correct
View Answer
8. which of the following is true about methods in an interface in java?
A. An interface can contain only
abstract method.
B. We can define a method in an interface
C. Private and protected access modifiers can also be used to declare methods in interface
D. None of the above
View Answer
9. Which of the following is the correct way of implementing an interface salary by class manager?
A. class manager imports salary
B. class manager implements salary
C. class manager extends salary
D. none of the mentioned
View Answer
10. Which of the following is an incorrect statement about packages?
A. Interfaces are specified public if they are to be accessed by any code in the program
B. Interfaces specifies what class must do but not how it does
C. All variables in interface are implicitly final and static
D. All variables are static and methods are public if interface is
defined pubic
View Answer
11. Which of these can be used to fully abstract a class from its implementation?
A. Objects
B. Packages
C. Interfaces
D. None of the Mentioned
View Answer
12. What is the output of this program?
A. 0
B. 2
C. 4
D. None of the mentioned
View Answer
13. All methods must be implemented of an interface.
A. TRUE
B. FALSE
C. Can be true or false
D. can not say
View Answer
14. What type of variable can be defined in an interface?
A. public static
B. private final
C. public final
D. static final
View Answer
15. What does an interface contain?
A. Method definition
B. Method declaration
C. Method declaration and definition
D. Method name
View Answer
16. What type of methods an interface contain by default?
A. abstract
B. static
C. final
D. private
View Answer
17. What will happen if we provide concrete implementation of method in interface?
A. The concrete class implementing that method need not provide implementation of that method
B. Runtime exception is thrown
C. Compilation failure
D. Method not found exception is thrown
View Answer
18. What happens when a constructor is
defined for an interface?
A. Compilation failure
B. Runtime Exception
C. The interface compiles successfully
D. The implementing class will throw exception
View Answer
19. What happens when we access the same variable defined in two interfaces implemented by the same class?
A. Compilation failure
B. Runtime Exception
C. The JVM is not able to identify the correct
variable
D. The interfaceName.variableName needs to be defined
View Answer
20. Can "abstract" keyword be used with constructor, Initialization Block, Instance Initialization and Static Initialization Block.
A. TRUE
B. FALSE
C. Can be true or false
D. can not say
View Answer
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What are the implementation classes of the set interface Mcq?
Classes that implement Set. HashSet.. LinkedHashSet.. EnumSet.. TreeSet..Which of the following is the correct way of implementing an interface salary by class manager in Java?
Q..Which of the following is correct way of implementing an interface salary by class manager?A.class Manager extends salary B.class Manager implements salary C.class Manager imports salary d) None of the mentioneAnswer» b. class Manager implements salary Which of the following is correct way of implementing an interface salary ...mcqmate.com › discussion › which-of-the-following-is-correct-way-of-imp...nullWhich keyword is used for correct implementation of an interface in C# net?
In C#, an interface can be defined using the interface keyword. An interface can contain declarations of methods, properties, indexers, and events.Which of the following is the correct way of implementing an interface person by class doctor?
Which of the following is the correct way of implementing an interface A by class B? Explanation: Concrete class implements an interface. Tải thêm tài liệu liên quan đến nội dung bài viết Which of these can be used to fully abstract a class from its implementation