CISCE Board - ICSE Class 9

Java Programming Foundation question bank (Computer Applications)

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Q1.

Computer Applications (Java OOP): What fundamental Java concept is exemplified in 'Object-Oriented Programming (OOP) Principles: Encapsulation, Inheritance, Polymorphism'?

(A)
Standard Java OOP principle (Encapsulation, Inheritance, Polymorphism, Abstraction) (Object-Oriented Programming (OOP) Principles: Encapsulation, Inheritance, Polymorphism)
(B)
Procedural assembly instruction
(C)
Syntax compile error
(D)
None of these
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Q2.

Primitive Data Types: In 'Object-Oriented Programming (OOP) Principles: Encapsulation, Inheritance, Polymorphism', how many bytes of memory are occupied by a `double` variable in Java?

(A)
8 bytes (64 bits) (Object-Oriented Programming (OOP) Principles: Encapsulation, Inheritance, Polymorphism)
(B)
4 bytes
(C)
2 bytes
(D)
16 bytes
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