Java Interview Quizs Question

Computer Exam Java Interview Questions

Q1. Java was developed by

A. Apple

B. IBM

C. Ericsson

D. Sun Microsystems

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Answer:-D. Sun Microsystems

Q 2. In which year Java programming language was developed

A. 1991

B. 1993

C. 1995

D. 1996

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Answer:-A. 1991

Q 3. Which one was the initial name of Java

A. Oak

B. CDL

C. CS-4

D. Usenet

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Answer:-A. Oak

Q 4. Which one is correct — “java is a _________”

A. platform dependent language

B. platform independent language

C. OS dependent language

D. OS independent language

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Answer:-B. platform independent language

Q 5. A special kind of Java program that is designed to be transmitted over the Internet and automatically executed by a Java-compatible web browser is

A. Servlets

B. JSP

C. Applet

D. Bytecode

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Answer:-C. Applet

Q 6. Java is a

A. Static language

B. Dynamic language

C. Assembly language

D. Binary language

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Answer:-B. Dynamic language

Q 7. A highly optimized set of instructions designed to be executed by the Java run-time system, is called

A. Objectcode

B. Bitcode

C. Bytecode

D. Floatcode

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Answer:-C. Bytecode

Q 8. Which one is commonly used to extend the applications hosted by web servers

A. JSP

B. IDE

C. Applet

D. Servlet

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Answer:-D. Servlet

Q 9. Java is a _____________

A. Logic-based language

B. Stack-based language

C. Data-structured language

D. Object oriented programming language

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Answer:-D. Object oriented programming language

Q 10. The act of representing essential features without including the background details or explanations is called

A. Abstraction

B. Polymorphism

C. Encapsulation

D. Inheritance

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Answer:-A. Abstraction

Q 11. Name of the process by which objects of one class acquire the properties of objects of another is called

A. Information Hiding

B. Inheritance

C. Polymorphism

D. Encapsulation

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Answer:-B. Inheritance

Q 12. Dynamic binding calls at

A. Start time

B. Compile time

C. Run time

D. Execution time

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Answer:-C. Run time

Q 13. Static binding calls at

A. Start time

B. Compile time

C. Process time

D. Execution time

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Answer:-B. Compile time

Q 14. Which one was the first browser to support Java applets

A. Internet Explorer

B. Safari

C. HotJava

D. NetJava

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Answer:-C. HotJava

Q15. Which one is not a Java Comment type

A. Single line comment

B. Two line comment

C. Multi line comment

D. Documentation comment

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Answer:-B. Two line comment

Q 16. HotJava Browser was developed in the year

A. 1990

B. 1992

C. 1995

D. 1996

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Answer:-C. 1995

Q 17. Which of the following is a multi line comment syntax

A. begin with / and end with /

B. begin with /* and end with */

C. begin with # and end with #

D. begin with /@ and end with @/

Show Answer

Answer:-B. begin with /* and end with */

Q 18. Which of the following is a single line comment syntax

A. / comment

B. // comment

C. /* comment */

D. //* comment */

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Answer:-B. // comment

Q 19. Which one is not a java access modifiers

A. Private

B. Default

C. Protected

D. Abstract

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Answer:-D. Abstract

Q 20. Access modifier which is accessible only within class is called

A. Private

B. Default

C. Protected

D. Public Answer: (a) Private

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Answer:-A. Private

Q 21. The protected access modifier is accessible within package and outside the package but through __________ only

A. Encasulation

B. Abstraction

C. Inheritance

D. Polymorphism

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Answer:-C. Inheritance

Q 22. The protected access modifier can be applied on

A. Members

B. Class

C. Method

D. Interface

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Answer:-A. Members

Q 23. Which one is a correct if statement

A. if{condition} (statement)

B. if condition {statement}

C. if(condition) {statement}

D. if{condition} statement

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Answer:-C. if(condition) {statement}

Q 24. A loop in java ends with

A. Colon

B. Semicolon

C. Dot

D. Slash

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Answer:-B. Semicolon

Q25. Exit for loop is an example of

A. Do while loop

B. While loop

C. For loop

D. None of the above

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Answer:-A. Do while loop

Q 26. Which one loop is also known as Entry Control loop

A. Infinite loop

B. Do while loop

C. For loop

D. While loop

Show Answer

Answer:-D. While loop

Q 27. The range of Short is

A. –27,568 to 27,567

B. –30,453 to 30,453

C. –32,768 to 32,767

D. –34,563 to 34,563

Show Answer

Answer:-C. –32,768 to 32,767

Q 28. A Signed 64-bit type is named as

A. Byte

B. Short

C. Int

D. Long

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Answer:-D. Long

Q 29. Float has _____ bits of storage

A. 16

B. 32

C. 64

D. 128

Show Answer

Answer:-B. 32

Q 30. The range of floating point is

A. -128 to +127

B. 1.4e–045 to 3.4e+038

C. -2147483648 to + 2147483647

D. -32768 to + 32767

Show Answer

Answer:-B. 1.4e–045 to 3.4e+038

Q 31. For storing a value, double uses

A. 24 bit

B. 32 bit

C. 64 bit

D. 128 bit

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Answer:-C. 64 bit

Q 32. Approximate range of double is

A. 4.9e–324 to 1.8e+308

B. 1.4e-045 to 3.4e+038

C. -2147483648 to + 2147483647

D. 0 to 65535

Show Answer

Answer:-A. 4.9e–324 to 1.8e+308

Q 33. For logical value, which primitive type is used

A. Float

B. Long

C. Double

D. Boolean

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Answer:-D. Boolean

Q 34. Which of the following is intrinsic data type

A. Classes

B. Arrays

C. Integer

D. Interface

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Answer:-C. Integer

Q 35. Which of the following is derived data type

A. Floating point

B. Interface

C. Character

D. Boolean

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Answer:-B. Interface

Q 36. Assigning a value of one type to a variable of another type is known as

A. Type compression

B. Type casting

C. Type correction

D. Type inheritance

Show Answer

Answer:-B. Type casting

Q 37. The syntax “type variable = (type) variable2” is used for

A. Type casting

B. Type compression

C. Type inheritance

D. Type correction

Show Answer

Answer:-A. Type casting

Q 38. Which type of conversions do not lose information about the magnitude of a value

A. String

B. Capture

C. Narrowing

D. Widening

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Answer:-D. Widening

Q 39. Assigning a larger type to a smaller one is known as _________ conversion in Java

A. Identity

B. Narrowing

C. Boxing

D. Capture

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Answer:-B. Narrowing

Q40. What is the default value of int

A. 0.0F

B. 0L

C. 0

D. 1

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Answer:-C. 0

Q 41. What is the default value of boolean in java

A. True

B. False

C. Null

D. 0.0d

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Answer:-B. False

Q 42. What are typically used to store information in Java

A. Variables

B. Constant

C. Conversion

D. None of the above

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Answer:-A. Variables

Q 43. Which of the variables serve as symbolic constants

A. Boolean

B. Char

C. Float

D. Final

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Answer:-D. Final

Q 44. Arithmetic operators in java can not be applied to

A. Long

B. Char

C. Float

D. Boolean

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Answer:-D. Boolean

Q 45. Java has a distinction of supporting special operators known as

A. Bitwise operators

B. Unary Operators

C. Conditional Operators

D. Type Comparison Operator

Show Answer

Answer:-A. Bitwise operators

Q 46. The operator sign ‘|’ is used for Bitwise ______

A. AND

B. OR

C. XOR

D. Complement

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Answer:-B. OR

Q 47. Which of the following operator has higher precedence

A. +

B. –

C. *

D. ||

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Answer:-C. *

Q 48. When a=9, b=12, c=3 then output of following statement is: x = a-b/3+c*2-1

A. 8

B. 10

C. 12

D. 15

Show Answer

Answer:-B. 10

Q 49. Unary minus ‘-‘ has associativity from

A. Right to left

B. Left to right

C. Not associative

D. None of the above

Show Answer

Answer:-A. Right to left

Q50. Which one returns the smallest whole number greater than or equal to x is

A. rint(x)

B. sqrt(x)

C. log(x)

D. ceil(x)

Show Answer

Answer:-D. ceil(x)