Java Software Architect Set 3

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Free Online Best Java Software Architect MCQ Questions for improve your basic knowledge of Java Software Architect. This Java Software Architect set 3 test that contains 25 Multiple Choice Questions with 4 options. You have to select the right answer to a question.

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Question 1

Which keyword is used for accessing the features of a package?

A	package
B	import
C	extends
D	export

Question 2

In which process, a local variable has the same name as one of the instance variables?

A	Serialization
B	Variable Shadowing
C	Abstraction
D	Multi-threading

Question 3

Which of the following for loop declaration is not valid?

A	for ( int i = 99; i >= 0; i / 9 )
B	for ( int i = 7; i <= 77; i += 7 )
C	for ( int i = 20; i >= 2; - -i )
D	for ( int i = 2; i <= 20; i = 2* i )

Question 4

Evaluate the following Java expression, if x=3, y=5, and z=10: ++z + y - y + z + x++

A	24
B	23
C	20
D	25

Question 5

Which of the following is an immediate subclass of the Panel class?

A	Applet class
B	Window class
C	Frame class
D	Dialog class

Question 6

In which memory a String is stored, when we create a string using new operator?

A	Stack
B	String memory
C	Heap memory
D	Random storage space

Question 7

Which of the following is a marker interface?

A	Runnable interface
B	Remote interface
C	Readable interface
D	Result interface

Question 8

What do you mean by nameless objects?

A	An object created by using the new keyword.
B	An object of a superclass created in the subclass.
C	An object without having any name but having a reference.
D	An object that has no reference.

Question 9

Which option is false about the final keyword?

A	A final method cannot be overridden in its subclasses
B	A final class cannot be extended
C	A final class cannot extend other classes
D	A final method can be inherited

Question 10

Which of the following is a valid long literal?

A	ABH8097
B	L990023
C	904423
D	0xnf029L

Question 11

The JDBC-ODBC bridge allows _____to be used as____

A	JDBC drivers, ODBC drivers
B	Drivers, Application
C	ODBC drivers, JDBC drivers
D	Application, drivers

Question 12

Which of the following is false?

A	The rt.jar stands for the runtime jar
B	It is an optional jar file
C	It contains all the compiled class files
D	All the classes available in rt.jar is known to the JVM

Question 13

Which method of the Class.class is used to determine the name of a class represented by the class object as a String?

A	getClass()
B	intern()
C	getName()
D	toString()

Question 14

In java, jar stands for_____

A	Java Archive Runner
B	Java Application Resource
C	Java Application Runner
D	None of the above

Question 15

Which of the following is a reserved keyword in Java?

A	object
B	strictfp
C	main
D	system

Question 16

What do you mean by chained exceptions in Java?

A	Exceptions occurred by the VirtualMachineError
B	An exception caused by other exceptions
C	Exceptions occur in chains with discarding the debugging information
D	None of the above

Question 17

An interface with no fields or methods is known as a ______.

A	Runnable Interface
B	Marker Interface
C	Abstract Interface
D	CharSequence Interface

Question 18

What is the use of the intern() method?

A	It returns the existing string from memory
B	It creates a new string in the database
C	It modifies the existing string in the database
D	None of the above

Question 19

What does the expression float a = 35 / 0 return?

A	0
B	Not a Number
C	Infinity
D	Run time exception

Question 20

Which of the following creates a List of 3 visible items and multiple selections abled?

A	new List(false, 3)
B	new List(3, true)
C	new List(true, 3)
D	new List(3, false)

Question 21

What is the use of w in regex?

A	Used for a whitespace character
B	Used for a non-whitespace character
C	Used for a word character
D	Used for a non-word character

Question 22

Which of the following is true about the anonymous inner class?

A	It has only methods
B	Objects can't be created
C	It has a fixed class name
D	It has no class name

Question 23

Which of the following tool is used to generate API documentation in HTML format from doc comments in source code?

A	javap tool
B	javaw command
C	Javadoc tool
D	javah command

Question 24

Which of these classes are the direct subclasses of the Throwable class?

A	RuntimeException and Error class
B	Exception and VirtualMachineError class
C	Error and Exception class
D	IOException and VirtualMachineError class

Question 25

Which package contains the Random class?

A	java.util package
B	java.lang package
C	java.awt package
D	java.io package

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Java Software Architect Set 3

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