JSP ____________ action element is used to obtain a reference to an existing JavaBean object.
Select correct option:
useBean
setProperty
getProperty
None of these
Question:2
When JSP page compiled, it is translated into?
Select correct option:
Applet
Application
Servlet
Web Browser
Question:3
Hidden Forms Fields contain the information that is needed to send to the
Select correct option:
Client
Server
Both server and client
Neither server nor client
Question:4
Which of the following is used to work with javaBean to include pages at request time and
forward request to other sources?
Select correct option:
JSP action element
JSP declaration
Scriptlets
JSP expression
Question:5
To define the error page in JSP we use following tag?
Select correct option:
exception-type
error-type
error-page
exception-page
Question:6
setAttribute(String, Object) associates a ----------with a name.
Select correct option:
Value
Object
String
Both String and Object
Question:7
“application” is a object of
Select correct option:
ServletContext
HttpSession
ServletConfig
Both ServletConfig and HttpSession
Question:8
JSP comments are declared through following tag
Select correct option:
<%@ %>
<%-- --%>
<%! %>
<%= %>
Question:9
Which of the following is NOT true about JavaBean?
Select correct option:
It should not have any public variable.
It must be serializable.
It must not have any zero argument constructor.
Private instances must be accessed via setters/getters.
Question:10
JSP page is a ---------------document that describes how to process a request to create a response.
Select correct option:
Text-based
xml-based
Both text-based and xml-based
Neither xml-based nor Text-based
Question:11
From the following which is not a basic function of web-based application:
Select correct option:
Presentation
Debugging
Business Logic
Data Management
Question:12
Client is referred as a
Select correct option:
Computer user
Computer that a person is using for communication purpose
Person which carry out web surfing
None of these
Question:13
To destroy the session in Servlet we use?
Select correct option:
session.destroy()
session.invalidate()
session.end()
session.Kill()
Question:14
“application” is a object of
Select correct option:
ServletContext
HttpSession
ServletConfig
Both ServletConfig and HttpSession
Question:15
Which of the following is NOT a JSP action element?
Select correct option:
useBean
setProperty
getProperty
javaBean
Question:16
From the following indicators; which is added in user session to know the session time out?
Select correct option:
Sessiontimeoutindicator
SessionTimeOutIndicator
SessionTimeoutIndicator
sessionTimeOutIndicator
Question:17
From following which one is the object of JspWriter used to send output to the client.
Select correct option:
request
out
response
Both request and response
Question:18
Which of the following is NOT true about JavaBean?
Select correct option:
It should not have any public variable.
It must be serializable.
It must not have any zero argument constructor.
Private instances must be accessed via setters/getters.
Question:19
Relationship between JSP and servlets is
Select correct option:
Servlets are built on JSP semantics and all servlets are compiled to JSP pages for runtime
usage
JSP and servlets are unrelated technologies
Servlets and JSP are competing technologies for handling web requests. Servlets are
being superseded by JSP, which is preferred. The two technologies are not useful in
combination
JSPs are built on servlet semantics and all JSPs are compiled to servlets for runtime usage
Question:20
getId( ) returns the unique ID of
Select correct option:
Current session
Previous session
Next session
Both Next and Previous session
Question:21
Which of the following is used to work with javaBean to include pages at request time and
forward request to other sources?
Select correct option:
JSP action element
JSP declaration
Scriptlets
JSP expression
Question:22
Packages are the way to organize files into different -------------according to their functionality,
usability as well as category they should belong to.
Select correct option:
Directories
Folders
Libraries
Both Folders and Libraries
Question:23
getAttribute(String) extracts----------- stored value from a session object
Select correct option:
Subsequently
Currently
Previously
Both Currently and Subsequently
Question:24
What is the initial contact point for handling a web request in a Page-Centric architecture?
Select correct option:
JSP page
JavaBean
servlet
HTML page
Question:25
From the following methods, which method cannot be overridden in the JSP page
Select correct option:
_jspService()
jspDestroy()
jspInit()
Both jspDestroy()and jspInit()
Question:26
JSP ____________ action element is used to obtain a reference to an existing JavaBean object.
Select correct option:
useBean
setProperty
getProperty
None of these
Question:27
In JSP Instance variables and method are declared through following tag
Select correct option:
<%@ %>
<%-- --%>
<%! %>
<%= %> (not sure)
Question:28
All -----------data is kept at the application server.
Select correct option:
Dynamic
Static
Both dynamic and static
Neither Static nor Dynamic
Question:29
A java program that has some design conventions is called_________?
Select correct option:
Java servlet
JSP
JSF
JavaBean
Question:30
A cookie is a piece of ------- that a web server can store on a client’s hard disk.
Select correct option:
Text
Number
String
Both Number and String
Question:32
Which of the following Environment variable tells the system about the root directory of TOMCAT?
Select correct option:
JAva_HOME
CATALINA_HOME
CLASSPATH
PATH
Question:33
Which of the following statement is correct to assign maximum priority to thread “t2”?
Select correct option:
t2.setPriority(Thread.PRIORITY_MiX);
t2.setPriority(Thread.PRIORITY_MAX)
t2.setPriority(Thread.MAX_PRIORITY);
t2.setPriority(Thread.MIX_PRIORITY);
Question:34
Which of the following object contains information specific to a servlet?
Select correct option:
ServletContext
ServletConfig
ServletRequest
ServletResponse
Question:35
Which of the following range of response code signify error by server?
Select correct option:
200-299
300-399
400-499
500-599
Question:36
From the following which ID is transmitted between the client and the server
Select correct option:
Session ID
Network ID
Server ID
None of these
Question:37
Which of the following is NOT a web technoloy of Java?
Select correct option:
Servlet
JSP
ASP
JSF
Question:38
Moving session from one server to another in case of server failure is known as
Select correct option:
Session Migration
Session Tracking
Session Hijacking
Both Session Hijacking and Tracking
Question:39
Which one is used to collect data when a user navigates between web pages?
Select correct option:
Session Tracking
User Tracking
Session Migration
Both User Tracking and Session Migration
Question:40
Which of the following method allows any other thread of same priority to execute?
Select correct option:
sleep()
wait()
notify()
yield()
Question:41
From the following which session tracking technique is used when new session is started?
Select correct option:
Cookies
URL Rewriting
Both Cookies and URL Rewriting
None of these
Question:42
Which of the following object is used for sharing resources among different servlets of same
application?
Select correct option:
ServletConfig
ServletRequest
ServletResponse
ServletContext
Question:43
Which of the following interface needs to implement while creating threads?
Select correct option:
Serializable
Runnable
ActionListener
WindowListener
Question:44
Session Tracking is done through following techniques?
Select correct option:
Cookies
Hidden fields
URL Rewriting
Cookies, Hidden fields and URL Rewriting
Question:45
Servlets are used to
Select correct option:
Create graphics
Provide dynamic web contents which extend web servers
Develop applets
Create GUI
Question:46
Which of the following is/are not correct about Thread(s)?
Select correct option:
Light weight
Heavy weight
Share same memory
Light weight and share same memory
Question:47
From following which code can be used to create session object in the Servlet:
Select correct option:
HttpSession session = req.getSession(true);
HttpSession session = req.getSession(false);
HttpSession session = req.getSession(1);
HttpSession session = req.setSession(1);
Question:48
JVM assigns CPU to the threads based on __________.
Select correct option:
Thread priorities
System priorities
Collective priorities
Both System and Collective priorities
Question:49
Which of the following method is called only once during life cycle of Servlet?
Select correct option:
service()
init()
destroy()
start()
Question:50
HTTP is a ---------protocol.
Select correct option:
Stateless
Connectionless
Connection oriented
Both Connectionless and Stateless
Question:51
Which of the following is NOT true about HTTP?
Select correct option:
HTTP is a stateless protocol
HTTP is a request response communication model
HTTP maintains user session between successive requests.
HTTP has no built-in state management between successive requests.
Question:52
Why we use RequestDispatcher to forward a request to another resource(servlet, html, jsp), instead of
using a sendRedirect()?
Select correct option:
sendRedirect() is not supported in servlet API.
RequestDispatcher is not supported in servlet API.
RequestDispatcher is efficient and allows the server to maintain request status.
None of these not sure
Question:53
getParameters() method returns an array of strings containing the values for a specified servlet
parameter.
Select correct option:
True
False
Question:54
Which of the following is not the part of http response?
Select correct option:
Result Code
Header files
Status code
URI
Question:55
web.xml is a ___________
Select correct option:
java file
configuration file
jar file
servlet file
Question:56
A ______ is a small text file used by servers to store pieces of data on a client for later retrieval.
Select correct option:
session
cookie
URL rewriting
Session object
Question:57
HttpSession stores session information in
Select correct option:
File system of client
File system of server
A cookie
A session object not sure
Question:58
Which of the following is NOT a part of HTTP request?
Select correct option:
Request method
URI
Status code
Header fields
Question:59
Which of the following folder contains configuration file?
Select correct option:
classes
lib
bin
WEB-INF
Question:60
Which of the following problem occurs with lower priority threads?
Select correct option:
Race condition
Starvation
Average waiting time
Process death
Question:61
Which of the following approch is used to create threads in java?
Select correct option:
inheritance
interface
Both inheritance and interface
None of these
Question:62
Which of the following method needs to override while handling threads in java?
Select correct option:
init()
start()
run()
runnable()
Question:63
From the following packages which one is used to write the servlets?
Select correct option:
javax
java
java.util
java.lang
Question:64
Servlets are used to
Select correct option:
Create graphics
Provide dynamic web contents which extend web servers
Develop applets
Create GUI
Question:65
getrequest() method gets information from a client and postrequest() method posts data to a
client.
Select correct option:
False
True
Question:66
JSP scripting elements is/are
Select correct option:
Declarations
Scriptlets
expressions
All of these
Question:67
From following methods; which method is not a part of the JSP life cycle?
Select correct option:
jspInit()
jspService()
_jspService()
jspDestroy()
Question:68
From the following which one is not a JSP directive?
Select correct option:
page
include
taglib
out
Question:69
To provide global control of JSP we use following tag
<%@ %> right Answer)
<%-- -%>
<%! %>
<%= %>
Question:70
javax.servlet.jsp.PageContext, is used to give a ---------point of access to many of the page
attributes.
Select correct option:
Single
Multiple
Question:71
In JSP Instance variables and method are declared through following tag
Select correct option:
<%@ %>
<%-- --%>
<%! %>
<%= %>
Question:72
Which of the following approach is also called page-with-bean approach.
Select correct option:
Page-Centric approach
MVC Model1
MVC Model2
MVC Model3
Question:73
A separate controller is a part of which of the following approach?
Select correct option:
Page-Centric approach
MVC Model1
MVC Model2
MVC Model3
Question:74
From following tags, which one is the Special JSP tag?
Select correct option:
<jsp: .…. />
<%! %>
<%= %>
<%@ %>
Question:75
JSTL stands for __.
JavaServer Pages Standard Tag Library
JavaSrvlet Pages Standard Tag Library
Java Pages Standard Tag Library
Question:76
JSP page is a ---------------document that describes how to process a request to create a response.
Text
XML
Both
None
Question:77
A java program that has some design conventions is called
java sevlet
jsp
jsf
javabean
Question:78
Which of the following is not included in simple tag while creating JSP custom tags?
Select correct option:
Start of tag
End of tag
Attributes
None of these
Question:79
Which of the following represent state of the components in MVC?
Model
View
Control
Both Model and View
Question:80
A user defined component that is used to perform certain action is called______.
Select correct option:
Built-in Tags
JSP action element
Custom tag not sure
jsp:useBean
Question:81
A Tier represents the _______ view of application.
Select correct option:
Physical
Logical
Biological
Local
Question:82
Which of the following is the best choice as a controller in MVC Model Architecture?
Select correct option:
Java
Servlet
JavaScript
JSP
Question:83
. The HTTP response values in the range __________ specify that the request was successful.
100-199
200-299
300-399
400-499
Question:84
With the help of _____________ we can better organize our files into different directories.
Classes
Interfaces
Session
Packages
Question:85
. Entire JSP page gets translated into a servlet ____________.
Once (pg 323)
Every time when it is accessed
Every time when the page is refreshed
Every time when the browser is restarted
Question:86
A bean class ___________ have a zero argument constructor.
Can
Can’t
Must (pg 356)
Shouldn’t
Question:87
. Layers represent the _____________ view of application.
Physical
Logical (pg 435)
External
None of these
Question:88
High coupling makes classes difficult or impossible to reuse because _____________.
They are independent of other classes
They depend on so many other classes
They have limited functionality
They are not properly implemented
Question:89
_____________ is a standard web based application framework.
Java
Servlet
JSP
JSF
Question:90
Which of the following is a correct order for Bean scope in JSP page from most visible to least
visible?
application, session, request, page
page, request, session, application
session, page, request, application
application, session, page, request
Question:91
The dot operator in Expression Language is typically used for accessing the --------------------of
an object.
Properties (pg 458)
Elements
Values
Attributes
Question:92
Initialization parameters of a servlet are defined in __________ file.
html
JSP
web.xml (pg 275)
servlet
Question:93
On every request from the client, the server creates a new ________ and calls the _______
method.
thread, service()
thread, init()
process, service()
process, init()
Question:94
. By ____________, the original request can be forwarded to the next servlet.
request dispatching
response redirection
both request dispatching and response redirection
None of the given options
Question:95
Which of the following is NOT appropriate for Page-centric approach?
The maintenance of the application becomes a nightmare.
A lot of code is also get duplicated.
Scaling of such kind of application is easy. (pg 397)
The code becomes a mixture of presentation, business and data access logic.
Question:96
Which of the following ‘statement’ object is used for executing precompiled SQL statements?
Statement
PreparedStatement (pg 147)
CallableStatement
None of the given options
Question:97
RPC stands for
Remote Personal Computer (RPC)
Remote Procedure Client
Remote Procedure Calls (RPC).
None of the given options
Question:98
. UDDI stands for
Universal Description, Discovery & Integration (UDDI) (pg490)
Universal Data, Discovery & Integration (UDDI)
Universal Data, Database & Integration (UDDI)
None of the given options
Question:99
Managed Beans have _______ Model
Declarative
Sequential
Iterative
None of the given options (pg465) Managed beans represent the data model
Question:100
DataBaseMetaData object can be derived from ___________ object.
ResultSet
Connection (pg165)
Statement
ResultSetMetaData
Question:101
DSN stands for ___________.
Domain System Name
Data Source Name (pg150)
Database System Name
Database Simple Name
Question:102
From following functions which function is invoked first?
paint()
paintComponet( )
paintBorder( )
paintChildern( )
Question:103
There is/are _____ form(s) of response redirection.
1
2 (pg 270)
3
4
Question:104
Expression is a code fragment which returns ___________.
Integer
String (pg326)
Depends on the expression
Nothing
Question:105
The dot operator in Expression Language is typically used for accessing the --------------------of
an object.
Properties (pg458)
Elements
Values
Attributes
Question:106
The sleep(int time) method causes the currently executing thread to wait for the time specified
in --------------
Milliseconds (pg221)
Nenoseconds
Seconds
Minutes
Question:107
Java was developed in………
1990
1994
1995
1996
Question:108
CREATE TABLE, DROP TABLE, and ALTER TABLE etc are -----------.
DML statements
DDL statements(pg144)
DCL statements
None of given options
Question:109
Extra sheet can be appended to URL using _________
i. Extra path information
ii. Added Parameters
iii. Custom Change
iv. All of the given options
Question:110
Initialization ________ of web application are also called ______________
i. Parameters, Context Attributes not sure
ii. Context Attributes, Parameters
iii. Parameters, Variables
iv. Context Attributes, Variables
Question:111
J2EE is developed for which of the following application
i. Very large applications
ii. GUI based applications
iii. Mobile devices
iv. Network based applications
Question:112
ODBC stands for ______________
i. Open database communication
ii. Open database connection
iii. Open database connectivity
iv. Open database Commission
Question:113
Which of the following command is used to compile Java code?
i. java filename
ii. javac filename.java
iii. javac filename
iv. java filename.java
Question:114
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
Question:115
Java program code is compiled into form called
Machine code
native Code
Byte Code
Source Code
Question:116
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
Question:117
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
Question:118
Static methods only access ___
instance variable
instance method
static variables and methods
both static and instance members
Question:119
Which of the following is modifier is provided by default if no access is written explicitly?
public
Private
Protected
Default
Question:120
A top level class may have only the following access modifier.
Package
Private
Protected
Public
Question:121
Which of the following is used for inheritance in java?
implements
extends
: (colon)
inherit
Question:122
A collection can store …
Homogenous objects
Heterogeneous objects
Objects as well as primitive values
At most 100 objects
Question:123
Window frame and dialog use ________ as their default layout.
Border layout
Flow layout
GridBag layout
Grid layout
Question:124
There are _________ types of exceptions in Java
2
3
4
5
Question:125
Which of the following belongs to a category of checked exception?
Null Pointer exception
IOException
Array index out of bounds
NumberFormatException
Question:126
Which of the following exception belongs to a category of un-checked exception?
IOException
Null Pointer exception
AWTException
ClassNotFoundException
Question:127
All the exceptions and errors in java are inherited from _____ class.
Exception
Error
Throwable
IOException
Question:128
Exceptions must be handled while handling files otherwise it may lead to _____
Logical error
Syntax error
Run-time error
No error
Question:129
Which of the following package needs to be import while handling files?
java.util
java.io
java.awt
javax.swing
Question:130
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
Question:131
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);
Question:132
The classes which contain the word _____ are byte oriented streams.
Reader
Writer
Stream
Byte
Question:133
Which of the following stream read/write data in the form of bytes?
FileReader
FileWriter
PrintWriter
FileInputStream
Question:134
Which of the following is called ’ pure abstract class ’ ?
Concrete class
Wrapper class
Interface
Abstract class with no abstract method
Question:135
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.
Question:136
Which of the following stream is a filter stream?
FileWriter
FileReader
BufferedReader
All of given options
Question:137
An instance of abstract class cannot be created.
TRUE
FALSE
Question:138
Anabstractclass ---------------instantiated.
Cannot be
Can be
Must
None of these
Question:139
The relationship between class and interface is called ________
’ Is a ’ relationship
’ Has a ’ relationship
’ Responds to ’ relationship
Question:140
BorderLayout is the default layout manager for a JFrame content pane
TRUE
FALSE
Question:141
Which of the following is a general purpose container?
JFrame
Dialog
JPanel
JApplet
Question:142
JPanel and Applet use ________ as their default layout.
Flow layout
Border layout
Grid layout
GridBag layout
Question:143
Which of the following is true about AWT and SWING components?
AWT components creates a process whereas SWING component creates a
thread.
AWT components creates a thread whereas SWING component creates a
process.
Both AWT and SWING component creates a process.
Both AWT and SWING component creates a thread.
Question:144
Which of the following function will be used to register event handler with events
generator (button)?
addAction()
addActionListener()
addListener()
registerListener()
Question:145
Event source can have --------- listeners registered on it.
Single
Double
Triple
Multiple
Question:146
If a class needs to handle events generated by button then which of the following
interface a class needs to implement?
ComponentListener
KeyListener
MouseListener
ActionListener
Question:147
Which of the following function is declared in MouseMotionListener interface?
public void mousePressed (MouseEvent me);
public void mouseDragged (MouseEvent me);
public void mouseClicked (MouseEvent me);
public void mouseEntered (MouseEvent me);
Question:148
WindowListener interface contains _______ methods.
Four
Six
Seven
Eight
Question:149
Mouse events can be trapped for ________ GUI component.
JPanel
JFrame
JButton
All of given
Question:150
Adapter classes have been defined for listener interfaces except ______ interface.
MouseListener
KeyListener
WindowListener
ActionListener
Question:151
Which of the following package needs to import while interacting with relational
database?
java.io
java.sql
javax.swing
java.awt
Question:152
Which of the following method is used to execute SELECT SQL statements?
executeUpdate(sql);
ExecuteUpdate(sql);
executeQuery(sql);
ExecuteQuery(sql);
Question:153
Which of the following method is used to execute INSERT, UPDATE and Delete SQL
statements?
executeQuery(sql);
ExecuteQuery(sql);
executeUpdate(sql);
ExecuteUpdate(sql);
Question:154
Which of the following statement object is used to execute stored procedures?
Statement
PreparedStatement
CallableStatement
None of given options
Question:155
HahMap takes key as a/an _________
Object
Array
Primitive value
Function
Question:156
A …defines the way and method of communication between two parties
Compiler
Protocol
Tool
Technique
Question:155
To create DataBaseMetaData object we write following line of code
DataBaseMetaData db = con.getMeataData();
ResultSetMetaData rsmd = rs.getMetaData();
ResultSetMetaData rsmd = rs.setMetaData();
DataBaseMetaData db = con.setMeataData();
Question:156
Which of the following are passed as an argument to the paint () method:
A Canvas object2. A Graphics object3. An Image object4. A paint objectQuestion:157
The code below draws a line. What color is the
line?g.setColor(Color.red.green.yellow.red);g.drawLine(0, 0, 100,100);
Red
Green
Yellow
Black
Question:158
Which of the following methods are invoked by the AWT to support paint and repaint
operations?
paint( )
repaint( )
draw( )
redraw( )
Question:159
If a super class method is protected then overriding method _________
must be protected
must be public
must be private
may be either protected or public
Question:160
Socket is a --------------communication channel between hosts.
Uni-directional
Bi-directional
Multi-directional
None of these
Question:161
You can ---------to a network using sockets.
Read
Write
Read/Write
None of these
Question:162
A serializable class must implement the method(s)…
readObject and writeObject
Either readObject or writeObject, or both, depending upon the desired behavior
No need to implement any method:
None of the given option
Question:163
Aside from the Scanner class, which of the following class/es can be used for text file
file input
ObjectInputStream
BufferedReader
StringTokenizer
None of these
Question:164
In which of the following application we do not need to maintain sessions
Cause registering web application
Web based shopping carts
Web reputation systems
Windows shopping systems
Re: CS506 Assignment 1 Solution and Discussion
Please read the following instructions carefully before solving & submitting assignment:
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Note: Do not put any query on MDB regarding this assignment, if you have any query then email at cs506@vu.edu.pk
Lectures Covered: This assignment covers Lectures # 1 to 9
GOOD LUCK
Problem Statement:
You are required to develop a Java program named MyATM, which should simulate behavior of a typical ATM (Automated Teller Machine). In which a user, after entering card details, can deposit amount, withdraw cash and view current balance. The program should be based on a user friendly interface; need to use Java basic GUI component (i.e. JOptionPane) for this purpose. Further, all information must be saved in a backend database using simple text file.
Detailed Description:
At start, your program should ask the user to provide card number (e.g. vu-bsxxxxxxx) and pin code (e.g. 1234) as input. After taking input from user the program should fetch user data corresponding to the input from database (i.e. text file) and store in a global variable (e.g. debitCard). Taking input from user is shown in figure no 1.
Fig. 1: Taking input from User
If input values are correct (i.e. provided values are same as given in text file) then following ATM services should be displayed via GUI;
Deposit Amount
Withdraw Cash
Check Balance
Exit the Program
However, in case, if input values are not correct (i.e. found no user against provided card number and pin code) then appropriate message should be shown, like; “Invalid Card No or wrong Pin Code”. Fig. 2: ATM Services GUI
Deposit Amount:
Each time, user selects this option, s/he will be prompted to enter money for deposit that must be in multiple of Rs. 500/- (hint is given below) and up to a maximum of Rs. 25000/- per transaction. If inputs are correct then the amount must be added in current balance and as well as in database. However, in case of wrong input, appropriate message should be displayed.
[image: JyLYbJe.png]
Fig. 3: Deposit Amount GUIs
Withdraw Cash:
User can withdraw any cash but in multiple of Rs. 500/- (hint is given below) and up to a maximum of Rs. 25000/- per transaction by using this option. However, if balance is zero or withdraw amount is greater than the balance, then appropriate message should be displayed. Otherwise, amount must be deducted from current balance and database should be maintained.
[image: AsBo8D1.png]
Fig. 4: Cash Withdraw GUIs
Check Balance:
The program should fascinate the user by displaying the current balance via GUI.
[image: pwLOHEw.png]
Fig. 5: Check Balance GUI
Exit the Program:
[image: O5TtLQa.png]
Before exiting, the program should display the developer information (i.e. Student Id and name) via GUI.
Fig. 6: Developer Info GUI
Required Stuff:
For this purpose, you have to create a text file and three separate Java classes, details are as follows;
Text File:
A simple text file, which should contain single line “vu-bsxxxxxxx,1234,0” in it and must be saved as bsxxxxxxx.txt.
Here, “bsxxxxxxx” at both (i.e. file name and single line text) must be same as your own student id.
And “vu-bsxxxxxxx” is card no, “1234” is pin code and “0” is initial balance.
[image: ENvKGIe.png]
Fig. 7: Sample Data in Database (.txt file)
DebitCard.java:
Data Members:
• cardNo: String
• pin: int
• balance: long
Constructors:
• default, parameterized & copy constructor
Standard Setters:
• setCardNo(…), setPin(…) & setBalance(…)
Standard Getters:
• getCardNo(), getPin()& getBalance()
DbHelper.java:
Data Members:
• FILE_NAME: String // static and final variable
Member Functions:
• loadData() & saveData(…)
Main Class:
Data Members:
• debitCard: DebitCard
• dbHelper: DbHelper
Constructor:
• default
Member Functions:
• main(…), initLoginGUI(), initServicesGUI(), depositAmoount(), cashWithdraw(), checkBalance() & showDeveloperInfo()
Hint:
if (amount % 500 == 0) {
// it is a multiple of 500.
}
Video Tutorials:
To download & install JDK and create a HellowWorld program in Java, please watch;
https://www.youtube.com/watch?v=AyANioRrpD0
To download JDK setup file for Windows x64 from VU-LMS, please visit;
Important Things to Implement:
You have to provide Java classes in separate .java files as guided above. Merging of two or more will result in deduction of marks.
Each Java class must have proper Data Members and Member Functions along with Constructors, Standard Setters and Getters etc. as discussed above.
For GUI, you have to use JOptionPane.showInputDialog and JOptionPane.showMessageDialog for taking input from user and showing output to user respectively.
Need to make sure that exceptions are managed properly throughout the program; especially NullPointerException and NumberFormatException while taking input from user.
All images and sample data, given in this document, are just for reference purpose only; you have to provide your own implementations. It is not required to be exactly the same.
Good Luck
Re: CS506 Assignment 2 Solution and Discussion
Please read the following instructions carefully before solving & submitting assignment:
Uploading Instructions:
• You are not allowed to use any other software/IDE except NetBeans IDE for this assignment development.
• The submission must be a complete NetBeans IDE project folder (which should contain complete source code, Java files, database file and builds etc.). After finalizing, compress it with Zip or RAR format, save with your own Student ID (e.g. bc000000000.zip) and submit it at VU-LMS within due date.
• Your assignment should be in .zip /.rar format. Other file formats will not be accepted.
• No assignment will be accepted through email.
Rules for Marking:
It should be clear that your assignment will not get any credit if:
o The assignment is submitted after due date.
o The assignment is not submitted in .zip /.rar format.
o The submitted assignment does not open or file is corrupted.
o The assignment is fully or partially copied from other student or ditto copy from handouts or Internet; strict disciplinary action will be taken in this case.
o The submitted code is unable to compile/execute in NetBeans IDE; during evaluation, submitted code will be checked on NetBeans IDE. If unable to execute then ZERO marks will be awarded and no excuses will be accepted in this regard.
Note: Do not put any query on MDB regarding this assignment, if you have any query then email at cs506@vu.edu.pk
Lectures Covered: This assignment covers Lectures # 1-16
GOOD LUCK
Problem Statement:
You are required to develop a Java program named MyATM, which should simulate behavior of a typical ATM (Automated Teller Machine). In which a user, after entering card details, can deposit amount, withdraw cash and check current balance. The program should be based on a user friendly interface; need to use Java Swing based GUI components for this purpose. Further, all information must be saved in a backend database using MS Access.
Detailed Description:
At start, your program should ask the user to provide card number and pin code as input. After taking input from user the program should fetch user data corresponding to the input values from database and store in a class level global variable. Taking input from user is shown in figure no 1.
Fig. 1: Taking input from User
If input values are correct (i.e. found a user against provided card number and pin code) then following ATM services should be displayed via GUI;
Deposit Amount
Withdraw Cash
Check Balance
Fig. 2: ATM Services GUI
However, in case if input values are not correct (i.e. found no user against provided card number and pin code) then appropriate message should be shown, like; “Invalid Card No or Wrong Pin Code”.
Deposit Amount:
Each time, user selects this option, s/he will be prompted to enter money for deposit that must be in multiple of Rs. 500/- (hint is given below) and up to a maximum of Rs. 25000/- per transaction. If inputs are correct then the amount must be added in current balance and as well as in database. However, in case of wrong input, appropriate message should be displayed.
Fig. 3: Deposit Amount GUI
2. Withdraw Cash:
User can withdraw any cash but in multiple of Rs. 500/- (hint is given below) and up to a maximum of Rs. 25000/- per transaction by using this option. However, if balance is zero or withdraw amount is greater than the balance, then appropriate message should be displayed. Otherwise, amount must be deducted from current balance and as well as database should be maintained.
Fig. 4: Cash Withdraw GUI
Check Balance:
The program should fascinate the user by displaying the current balance as well via GUI.
Fig. 5: Check Balance GUI
Note: At the end of each successful transaction, the user must be asked to proceed with another transaction or not; if yes then start from displaying ATM services again and if not then show developer information (i.e. Student Id and name) via GUI.
Fig. 6: Developer Info
Required Stuff:
Java Classes:
DebitCard.java (id,username,cardno,pincode,balance)
DbHelper.java (should contain all database related code)
MainClass.java (should contain GUI code)
Database file:
BSxxxxxxxx.accdb (must be same as your own VU student id)
Note: need to put database file in assets folder in NetBeans project directory; as shown below;
Fig. 7: Folder “assets” in NetBeans project directory
Sample Data:
Id Username Card No Pin Code Balance
1 Ahmad 20201001 1041 3000
2 Ali 20201002 1226 0
3 Sana 20201003 2592 7000
4 Amna 20201004 6372 12000
5 Umar 20201005 9241 25000
Tab. 1: Sample Users Data
Tab. 2: Users Table in MS Access Database file
Hint:
if (amount % 500 == 0) {
// it is a multiple of 500.
}
https://www.youtube.com/watch?v=AyANioRrpD0
Setup Files & Video Tutorials:
To download JDK setup file for Windows x64 , Download;
To download JDK setup file for Windows x32 , please visit;
To install JDK and create a HelloWorld program in Java, please watch;
https://www.youtube.com/watch?v=AyANioRrpD0
To install & create a HelloWorld Java program in NetBeans IDE, please watch;
https://www.youtube.com/watch?v=AyANioRrpD0
To use UCanAccess driver to connect with MS Access database, please watch;
https://www.youtube.com/watch?v=0xGN88cZyuU
https://www.youtube.com/watch?v=G8iUNPz1c6s
Important Things to Implement:
For GUI, relevant components (i.e. JFrame, JPanel, JButton, JTextArea, JTextField and JLable etc.) from AWT and Swing packages should be used.
You will have to use UCanAccess driver to connect to MS Access database. In this case, you are suggested to view the video tutorial shared above.
For storing/fetching data to/from database, you will need to use proper SQL queries.
Data must be stored/fetched to/from database table in the form of Java class object/s.
You can use same Java classes (DebitCard and DbHelper etc.) as provided in assignment # 1 and also can make changes as required.
Java classes must have proper Data Members and Member Functions along with Constructors, Standard Setters and Getters etc.
Need to make sure that exceptions are managed properly throughout the program; especially NullPointerException, NumberFormatException, ClassNotFoundException and SQLException etc.
All images, tables and sample data, given in this document, are just for reference purpose only; you have to provide your own implementations. It is not required to be exactly the same.
Good Luck
Re: CS506 Gdb1 Solution and discussion
GDB Topic:
In general, a typical Java program is dealt with the following kinds of thread:
Main Thread; initial application code is executed.
Worker Thread; time-consuming and background tasks are executed.
Well, Java based smart devices (embedding Java code in smart devices) have revolutionaries the human life. At one side, these devices provide ease of use of technology. But on the other side, their unresponsiveness or delay in response to user’s actions may result in human frustration. One of the main reasons is, these devices mostly run on a single Main Thread.
Being a Java developer what do you think, “Use of Worker Threads along with Main Thread will reduce the response delay or increase the work load in Java based Smart Devices?”
Please read the following instructions carefully before solving & submitting assignment:
Uploading Instructions:
• You are not allowed to use any other software/IDE except NetBeans IDE for this assignment development.
• The submission must be a complete NetBeans IDE project folder (which should contain complete source code, Java files, database file and builds etc.). After finalizing, compress it with Zip or RAR format, save with your own Student ID (e.g. bc000000000.zip) and submit it at VU-LMS within due date.
• Your assignment should be in .zip /.rar format. Other file formats will not be accepted.
• No assignment will be accepted through email.
Rules for Marking:
It should be clear that your assignment will not get any credit if:
o The assignment is submitted after due date.
o The assignment is not submitted in .zip /.rar format.
o The submitted assignment does not open or file is corrupted.
o The assignment is fully or partially copied from other student or ditto copy from handouts or Internet; strict disciplinary action will be taken in this case.
o The submitted code is unable to compile/execute in NetBeans IDE; during evaluation, submitted code will be checked on NetBeans IDE. If unable to execute then ZERO marks will be awarded and no excuses will be accepted in this regard.
Note: Do not put any query on MDB regarding this assignment, if you have any query then email at cs506@vu.edu.pk
Lectures Covered: This assignment covers Lecture # 1-17
GOOD LUCK
Problem Statement:
You are required to write a Java program, named ShoppingCart, for a typical online shopping system. In which a customer can add and remove items to the shopping cart. The program will calculate the total bill as the items are added/removed to/from shopping cart and will display the amount via user friendly Interface on real time basis. Further, all orders will be saved in a backend database using MS Access so that the administrator could process the orders properly.
Detailed Description:
At start, your program should read Products Data from MS Access database file (sample data is given below) and display a GUI (i.e. Graphical User Interface) which should contain options for selecting quantity of products, sample is given below;
[image: SXBz5T9.png]
Fig. 1: Shopping Cart GUI
Here, the customer can select the quantity (i.e. 0 to 10) for available products by clicking on add (+) or remove (–) buttons; the cart should be updated on each action and correct amount after calculating the number of items, subtotal, shipping charges (shipping charges are given below) and grand total should be displayed.
When user clicks on “Place Order” then the program should check whether the cart contains any item or not. If cart is empty then a message “Cart is empty!” should be displayed. Otherwise, order details will be saved to MS Access database file and interface will be updated with initial values (i.e. zero quantity for each item and zero in amount fields etc.) as well.
Further, cross icon at top right corner of the interface should terminate the program and show the developer information (i.e. Student Id and name) via message dialog.
[image: sWyqLUY.png]
Fig. 2: Developer Info
Required Stuff:
Java Classes:
Product.java
Cart.java
DatabaseHelper.java (should contain all database related code)
MainClass.java (should contain GUI code)
Database file:
BSxxxxxxxx.accdb (must be same as your own VU student id)
Note: need to put database file in assets folder in NetBeans project directory; as shown below;
[image: MIuLFm4.png]
Fig. 3: Folder “assets” in NetBeans project directory
Sample Data:
Item Price ($)
1 Orange 2.0
2 Grapes 2.5
3 Banana 1.5
4 Mango 3.0
Tab. 1: Sample Products Data
No of Items Charges
1 0 $0
2 1 to 5 $0.5
3 6 to 10 $1.0
4 11 to 15 $1.5
5 16 to 20 $2.0
6 21 to 25 $2.5
7 26 to 30 $3.0
8 31 to 35 $3.5
9 More than 35 $4.0
Tab. 2: Sample Shipping Charges
[image: DFkeM2b.png]
Tab. 3: Products Table in MS Access Database file
[image: RokU8Vy.png]
Tab. 4: Orders Table in MS Access Database file
Important Things to Implement:
For GUI, relevant components (i.e. JFrame, JPanel, JButton, JTextField and JLable etc.) from AWT and Swing packages should be used.
You will have to use ucanaccess driver to connect to MS Access database. In this case, you are suggested to view the following video tutorial.
https://youtu.be/0xGN88cZyuU
For storing/fetching data to/from database, you will need to use proper SQL queries.
You can use same Product and Cart Java classes as provided in assignment # 1 and also can make changes as required.
Java classes must have proper Data Members and Member Functions along with Constructors, Standard Setters and Getters etc.
Need to make sure that exceptions are managed properly throughout the program; especially NullPointerException, ClassNotFoundException and SQLException.
All images, tables and sample data, given in this document, are just for reference purpose only; you have to provide your own implementations. It is not required to be exactly the same.
Good Luck
Please read the following instructions carefully before solving & submitting assignment:
Uploading Instructions:
• You are not allowed to use any other software/IDE except NetBeans IDE for this assignment development.
• The submission must be a complete NetBeans IDE project folder (which should contain complete source code; Java files, servlet files, html files, database file, xml files and builds etc.). After finalizing, compress it with Zip or RAR format, save with your own Student ID (e.g. bs1234567890.zip) and submit it at VU-LMS within due date.
• Your assignment should be in .zip /.rar format. Other file formats will not be accepted.
• No assignment will be accepted through email.
Rules for Marking:
It should be clear that your assignment will not get any credit if:
o The assignment is submitted after due date.
o The assignment is not submitted in .zip/.rar format.
o The submitted assignment does not open or file is corrupted.
o The assignment is fully or partially copied from other student or ditto copy from handouts or Internet; strict disciplinary action will be taken in this case.
o The submitted code is unable to compile/execute in NetBeans IDE; during evaluation, submitted code will be checked on NetBeans IDE. If unable to execute then ZERO marks will be awarded and no excuses will be accepted in this regard.
Note: Do not put any query on MDB regarding this assignment, if you have any query then email at cs506@vu.edu.pk
Lectures Covered: This assignment covers Lecture # 1 - 30
GOOD LUCK
Problem Statement:
You are required to deploy a basic web application using Apache Tomcat Server, named ShoppingCart, for a typical online shopping system. In which a customer can add/remove items to shopping cart and proceed to place order. The program should calculate total bill and display amount via web page. Further, all orders will be saved in a backend database using MS Access so that administrator could process accordingly.
[floatRight]Detailed Description:
The program should facilitate at least one user i.e. Customer. For this purpose, you have to develop an html page (index.html) which should contain a login form, as shown in figure 1. [image: Vlpr8yW.png][/floatRight]
The customer should be able to login by using student id (must be your own student id) as username and “vu” as password.
Now, write a Java Servlet named as LoginServlet.java that will receive submitted information from login form (i.e. index.html) and verify input values; whether entered values are correct or not. If authentication is invalid then print back a message “Invalid Username or Password”.
If customer credentials (i.e. username and password) are correct, jump to Shopping Cart Page (i.e. ShoppingCartServlet.java) which should list down all available products (i.e. products having one or more items), as shown in figure 2.
[image: gAuXrL7.png]
Here, customer can provide quantity of desired product/s and click on Check Out button. If no item is selected (i.e. no quantity is provided), then a message “Cart is empty” should be displayed.
On the other hand, if cart is not empty, Checkout Page (i.e. CheckOutServlet.java) should serve the customer by displaying total bill, shipping charges along with no. of products & items etc. and also provide an input field for shipping address, as shown in figure 3.
[image: UPKP78K.png]
To place order, customer must provide shipping address and click on Place Order button. Before displaying message "Order has been placed successfully.”, the program must save order details (i.e. no. of items, subtotal, shipping charges, grand total, shipping address and selected products with quantity) in corresponding database tables. Further, need to maintain quantity of products in database so that customer could not see out of stock products in next shopping.
Button “Go Back” should take back on Shopping Cart Page. However, customer can sign out from system by pressing “Logout” button. In this case, web developer information (student id, name and email address) should be displayed via an HTML page (info.html), as shown in figure 4.
[image: sx2DRhQ.png]
Required Stuff:
Html Pages:
index.html
info.html
Java Servlets:
LoginServlet.java
ShoppingCartServlet.java
CheckOutServlet.java
Java Classes:
Product.java
Cart.java
Order.java
OrderDetail.java
DatabaseHelper.java (must contain all database related code)
Database file:
BSxxxxxxxx.accdb (must be same as your own VU student id)
Shipping Charges:
Shipping Charges ($) = ((no. of Items / 5) + 1) * 0.5
Sample Data & Database Tables:
Tab. 1: Sample Products Data
#
Name
Price
Quantity
1
Flour
$18.00
20
2
Oil
$19.00
50
3
Ghee
$10.00
0
4
Sauce
$22.00
40
5
Sugar
$21.35
35
6
Salt
$25.00
26
7
Daal
$30.00
38
8
Rice
$40.00
92
9
Pasta
$97.00
63
10
Fruits
$35.00
72
11
Dry Fruits
$31.00
70
12
Tea
$21.00
12
13
Coffee
$38.00
9
14
Milk
$10.00
10
15
Snacks
$23.25
13
16
Dessert
$15.50
22
17
Vegetables
$17.45
52
18
Chicken
$39.00
98
19
Beef
$62.50
0
20
Frozen Food
$19.20
30
21
Sea Food
$81.00
29
22
Sweet
$10.00
29
23
Cake
$21.00
0
24
Yogurt
$26.00
0
25
Pickle
$30.00
41
Tab. 2: Products Table in MS Access Database
[image: 7i9OFP4.png]
Tab. 3: Orders Table in MS Access Database
[image: Pf9ldDs.png]
Tab. 4: Order Details Table in MS Access Database
[image: enC3m6e.png]
Video Tutorials:
To download and install of Tomcat Server, please watch;
https://youtu.be/eaYAcv3p9Vw
To create a web application project in NetBeans IDE, please watch;
https://youtu.be/S9LGRuILHfc
To add ucanaccess driver in a NetBeans project, please watch;
https://youtu.be/G8iUNPz1c6s
Important Things to Implement:
You have to provide separate pages, servlets, java files and database tables as guided above. Merging of two or more will result in deduction of marks.
You need to put database file in assets folder under NetBeans project web directory along with html pages, as shown in figure 5.
For storing/fetching data to/from database, you will need to use proper SQL queries.
You can use same Product and Cart Java classes as provided in assignment # 1 & 2 and also can make changes as required.
Java classes must have proper Data Members and Member Functions along with Constructors, Standard Setters and Getters etc.
Need to make sure that exceptions are managed properly throughout the program; especially NullPointerException, ClassNotFoundException, NumberFormatException and SQLException etc.
All images, tables and sample data, given in this document, are just for reference purpose only; you have to provide your own implementations. It is not required to be exactly the same.
Good Luck
The keyword “this” is used to ________
invoke constructor of the another class
invoke alternate constructor of the same class
invoke constructor of super class from sub class
invoke constructor of sub class from super class
Java defines _____ for the listener interfaces having more than one vent handling methods.
Answer: Adapter Classes (right Answer)
DSN stands for _________
Answer: Data Source Name
JDBC-ODBC stands for ________.
Answer: JDBC stands for java database connectivity.
== Operator compares _________ of strings whereas equals() method compares _________ of strings.
Answer: Addresses, values
Overloading is _______ whereas overriding is _____
Answer: Compile time binding, run time binding
Java defines ________ for the listener interfaces having more than one event handling methods.
Answer: Event Listeners
A database that is created in MS Access 2003 will be saved with _________ extension.
Answer: .mdb
Based on functionality, the streams can be categorized as ________
Answer: Node stream and Filter stream
AWT is a GUI Package used in java. AWT stands for_________
Answer: Abstract Window Toolkit
GDB:
IoT (Internet of Things) has opened up a world of possibilities in patient monitoring systems. The smart device like Pacemaker continuously monitors patient’s heart, generates electric pulses to prevent heart rate from going too slow and inform the physician about the health on real time basis. Hence smart devices can save lives in emergency cases as well.
But what makes these devices “smart”, when they are having several barriers like limited memory, slow processing speed, connectivity issues and security concerns etc. Are they really smart enough?
Being a Java developer what do you think, “Embedding Java programs in IoT devices, will make them smart or result in bad performance, for health care systems?”
Instructions:
Your comment must not be more than 4-5 lines and that must be concise, coherent and to the point comment.
GDB will not get any grade
If comment is lengthy and irrelevant.
If found copied from other student or from internet material.
If GDB solution is posted via mail within or after due date.
For any queries, please email at CS506@vu.edu.pk
CS506 Past Mid Term Paper Solved By Moaaz
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