CS506 - Web Design and Development

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

a java class that follows certain design conventions is called____________.

Re: CS506 Assignment 1 Solution and Discussion Please read the following instructions carefully before solving & submitting assignment: Uploading Instructions: • You are not allowed to use any IDE tool like NetBeans for this assignment. • Use Notepad or Notepad++ for coding and JDK package for Java source code compilation and running. • Place all the source code (.java & .class files) in a Zip/RAR file, save with your own Student ID (e.g. bc000000000.zip) and Upload it on VULMS 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 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 assignment is not submitted in .zip /.rar format. 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

Please share your Past and Current Paper to help in Midterm Exams.

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