CS506 Web Design and Development
Which of the following is a general purpose container?
Select correct option:
JFrame
Dialog
JPanel
JApplet
Which of the following package needs to be import while handling files?
Select correct option:
java.util
java.io
java.awt
javax.swing
Exception handling code is written in _______
Select correct option:
try block ot confirm
catch block
finally block
throws clause
Which of the following stream is a Node stream?
PrintWriter
FileWriter
BufferedReader
All of given option
Which of the following stream read/write data in the form of bytes?
FileReader
FileWriter
PrintWriter
FileInputStream
Which of the following command is used to compile Java code?
java filename
javac filename.java
javac filename
java filename.java
Which of the following method is used to execute INSERT, UPDATE and Delete SQL statements?
executeQuery(sql);
ExecuteQuery(sql);
executeUpdate(sql);
ExecuteUpdate(sql);
Which of the following stream is a filter stream?
FileWriter
FileReader
BufferedReader
All of given options
An event in java is represented as ________
Operator
Function
Object
Primitive data type
Which of the following belongs to a category of checked exception?
Null Pointer exception
IOException
Array index out of bounds
NumberFormatException
Packages are the way to organize files into different -------------according to their functionality, usability as well as category they should belong to.
Directories
Folders
Libraries
None of these
When JSP page compiled, it is translated into?
Applet
Application
Servlet
Web Browser
From the following which ID is transmitted between the client and the server
Session ID
Network ID
Server ID
None of these
To define the error page in JSP we use following tag?
exception-type
error-type
error-page
exception-page
Web.xml is a ___________
java file
configuration file
jar file
servlet
Which of the following is NOT a part of HTTP request?
Request method
URI
Status code
Header fields
Which of the following range of response code indicates that request was successful?
100-199
200-299
300-399
400-499
Which of the following Environment variable tells the system about the root directory of TOMCAT?
JAva_HOME
CATALINA_HOME
CLASSPATH
PATH
Which of the following folder contains configuration file?
Classes
Lib
Bin
WEB-INF
Which of the following is NOT a web technoloy of Java?
Servlet
JSP
ASP
JSF
Which of the following approch is used to create threads in java?
inheritance
interface
Both inheriance and interface
None of these
Which of the following syntax attaches an output stream to console?
Select correct option:
FileWriter fw = new FileWriter("output.txt");
FileWriter fw = new FileWriter(FileDescriptor.out);
FileWriter fw = new FileWriter(FileDescriptor.in);
FileWriter fw = new FileWriter(FileDescriptor);
What will happen if static modifier is removed from the signature of main method?
Select correct option:
The program does not compile
The program compiles and runs successfully
The program compiles but does not run
None of given options
v What will happen if main method is declared as private?
Select correct option:
The program does not compile
The program throws an exception at run time
The program compiles and runs successfully
None of given options
A collection can store _________
Select correct option:
Homogenous objects
Heterogeneous objects
Objects as well as primitive values
At most 100 objects
The toString() method returns a _________ representation of _______
Select correct option:
int, string
string, int
string, object
object, string
Based on functionality, the streams can be categorized as ________
Select correct option:
Byte oriented stream and Node stream
Filter stream and Character oriented stream
Node stream and Filter stream
Byte oriented stream and Character oriented stream
Which of the following stream read/write data in the form of bytes?
Select correct option:
FileReader
FileWriter
PrintWriter
FileInputStream
If a super class method is protected then overriding method _________
Select correct option:
must be protected
must be public
must be private
may be either protected or public
Quiz Start Time: 07:13 PM Time Left 81
sec(s)
A variable declared as static in a class is a/an _________
Select correct option:
Instance variable
Class variable
Const variable
Global variable
Which of the following stream read/write data in the form of bytes?
FileReader
FileWriter
PrintWriter
FileInputStream
HahMap takes key as a/an _________
Object
Array
Primitive value
Function
Which of the following feature is not available in java
Pointers
Operator overloading
Global variables
All of given options
Static methods can only access __________
Instance variables
Instance methods
Static variables and methods
Both static and instance members
What will happen if we write static public void instead of public static void?
Select correct option:
Program does not compile
Program compiles but does not run
Program compiles and run successfully
Program throws an exception
Which of the following method is called only once during life cycle of Servlet
Service()
Init()
Destroy()
Start()
Which of the following method allows any other thread of same priority to execute?
Sleep()
Wait()
Notify()
Yield()
Which of the following problem occurs with lower priority threads?
Race Condition
Starvation
Average waiting time
Process Death
Which of the following method is used to convert a string into an int value?
IntValue()
parselnt()
Parselnt()
parselInteger()
The classes which contain the word _____ are bytes oriented streams.
Reader
Writer
Stream
Byte
To compare the valueof two strings, _______ must be used.
=operator
==operator
Equal()method
Compare()method
Which of the following stream is a Node stream?
PrintWriter
FileWriter
BufferedReader
All of the given option
The given line of code will results in ___________ system.out.println(5+9);
59
5+9
14
syntax error
Which of the following feature provides the facility for multiple inheritance
Adapter Classes
Wrapper Classes
Interfaces
Collections
==operator compares ____________ of strings whereas equals() method compares ______ of the string.
Value, Addresses
Address, Values
Size, Addresses
Addresses, Size
Which of the following package needs to be import while handling files?
Java.util
Java.io
Java.awt
Javas.swing
Which of the following command is used to run java program?
Java filename.java
Java filename
Javac filename.java
Javac filename
What will happen if we write static public void instead of public static void?
Program does not compile
Program compiles but does not run
Program compiles and run successfully
Program throws an exception
Which of the following syntax used to attach an input stream to console?
FileReader fr=new FileReader((input.txt))
FileReader fr=new FileRead(FileDescriptor.in);
FileReader fr=new FileReader(FileDescriptor);
Is it possible to provide more than one main method within same class?
True
False
Which of the following is true about abstract class?
An abstract class must have all methods declared as abstract methods.
A class must have at least one abstract method to be abstract class.
A class without any abstract method can be declared as abstract class.
An instance of abstract class can be created
HTML form data can be processed by JSP
TRUE
FALSE
From the following methods, which method cannot be overridden in the JSP page
_jspService()
jspDestroy()
jspInit()
None of these
Which of the following object is used for sharing resources among different servlets of same application?
ServletConfig
ServletRequest
ServletResponse
ServletContext
getParameters() method returns an array of strings containing the values for a specified servlet parameter.
TRUE
FALSE
If a super class method is protected then overriding method _________
Select correct option:
must be protected
must be public
must be private
may be either protected or public
Which of the following exception belongs to a category of un-checked exception?
Select correct option:
IOException
Null Pointer exception
AWTException
ClassNotFoundException
Which of the following is called ' pure abstract class ' ?
Concrete class
Wrapper class
Interface
Abstract class with no abstract method
Which of the following is true about abstract class?
An abstract class must have all methods declared as abstract methods.
A class must have at least one abstract method to be an abstract class.
A class without any abstract method can be declared as abstract class.
An instance of abstract class can be created.
Which of the following stream is a filter stream?
FileWriter
FileReader
BufferedReader
All of given options
The classes which contain the word _____ are byte oriented streams.
Reader
Writer
Stream
Byte
Which of the following stream read/write data in the form of bytes?
ileReader
FileWriter
PrintWriter
FileInputStream
An instance of abstract class cannot be created.
TRUE
FALSE
An abstract class ---------------instantiated.
Cannot be
Can be
Must
None of these
The relationship between class and interface is called ________
' Is a ' relationship
' Has a ' relationship
' Responds to ' relationship
None of the given options
Which of the following belongs to a category of checked exception?
Null Pointer exception
IOException
Array index out of bounds
NumberFormatException
Which of the following exception belongs to a category of un-checked exception?
IOException
Null Pointer exception
AWTException
ClassNotFoundException
All the exceptions and errors in java are inherited from _____ class.
Exception
Error
Throwable
IOException
Exceptions must be handled while handling files otherwise it may lead to _____
Logical error
Syntax error
Run-time error
No error
Which of the following package needs to be import while handling files?
java.util
java.io
java.awt
javax.swing
When defining a method you must include a/an ....... to declare any exception that
might be thrown but is not caught in the method:
try block
finally block
catch block
throws clause
A top level class may have only the following access modifier.
Package
Private
Protected
Public
Which of the following is used for inheritance in java?
implements
extends
: (colon)
inherit
A collection can store ..........
Homogenous objects
Heterogeneous objects
Which of the following syntax is used to attach an input stream to console ?
FileReader fr = new FileReader(' input.txt ') ;
FileReader fr = new FileReader(FileDescriptor.in);
FileReader fr = new FileReader(FileDescriptor);
FileReader fr = new FileReader(console);
Window frame and dialog use ________ as their default layout.
Border layout
Flow layout
GridBag layout
Grid layout
There are _________ types of exceptions in Java
2
3
4
5
What if the main method is declared as private?
The program does not compile
The program compiles but does not run
The program compiles and runs properly
The program throws an exception on compile time
Java program code is compiled into form called
Machine code
native Code
Byte Code
Source Code
A top level class without any modifier is accessible to
any class
any class within the same package
any class within the same file
any subclass of this class
Overloading is _______ whereas overriding is _____
Run time binding, compile time binding
Late binding, compile time binding
Compile time binding, run time binding
Run time binding, late time binding
Static methods only access ___
instance variable
instance method
static variables and methods
both static and instance members
Which of the following is modifier is provided by default if no access is written explicitly?
public
Private
Protected
Default
HahMap takes key as a/an _________
Object
Array
Primitive value
Function
--
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