Re: [ vuZs.net ] Cs506 Quiz No.1 April 27,2012 (Correction3)

Dear umer, 

You are welcome. But I am not a sir, I am  a novice learner like another student.

Another correction according to my limited IT knowledge.

Right answer: FileWriter

Explanation:

Node Stream:  It is class of node which directly read or write to data source or sink.  Like FileReader or FileWriter

BufferedReader and PrintWriter are the Filter Streams:

Filter Streams: Stays upon node stream and provide extra functionalities. It takes node streams as their input instead of direct source.

let me explain by Example:

FileWriter fw= null;

PrintWriter  pw = null;

fw = new FileWriter ("myfilet.txt"); // reading directly myfile.txt

pw = new PrintWriter(fw); // see PrinterWriter is taking fw  as input

BufferedReader act on fileReader stream so BufferedReader is also filter stream.

Which of the following stream is a Node stream?

 

PrintWriter

FileWriter

BufferedReader

All of given option

Regards

Zubair Hussain

www.vuzs.net

On Sat, Apr 28, 2012 at 10:32 AM, Umair Saulat <saulat.umair@googlemail.com> wrote:

Thank you Sir...............

On Sat, Apr 28, 2012 at 11:16 AM, Zubair Hussain <zubair@vuzs.net> wrote:

Dear Umer,

To me right answer is JPanel.

Applet, JFrame and Dialog are top level container.

Which of the following is a general purpose container?

Select correct option:

JFrame

Dialog

JPanel

JApplet

Regards

Zubair Hussain

www.vuzs.net

On Fri, Apr 27, 2012 at 5:56 PM, Umair Saulat <saulat.umair@googlemail.com> wrote:

CS506 Web Design and Development

Quiz No.1 April 27, 2012

 

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 

 

--
Zindagi mein 2 Logo ka buhat khayal rahkoooo

Ist woh jiss ney tumhari jeet ke Liye buhat kuch hara hoo (Father)

2nd woh jiss ko tum ney har dukh me pukaara hoo (Mother)

Regards, 

Umair Saulat

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Zindagi mein 2 Logo ka buhat khayal rahkoooo

Ist woh jiss ney tumhari jeet ke Liye buhat kuch hara hoo (Father)

2nd woh jiss ko tum ney har dukh me pukaara hoo (Mother)

Regards, 

Umair Saulat

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