BCSCCS407R01 JAVA PROGRAMMING LABORATORY

Transcription

1 BCSCCS407R01 JAVA PROGRAMMING LABORATORY School of Computing Shanmugha Arts, Science, Technology and Research Academy [SASTRA] Thanjavur

2 List of Experiments 1. Polymorphism in java. 2. Inheritance in Java. 3. Interface in Java. 4. Packages in java. 5. Multiple Threads in JAVA. 6. Applet using Labels, Text Fields and Buttons. 7. Applet using Checkbox, Option Buttons, Choice, List and Scrollbar. 8. Standalone GUI interface using Frames. 9. Applet for demonstrating font features. 10. Applet using Panels and Layout manager. 11. Applet for demonstrating graphics features using brush styles, colors. 12. Library Management using JDBC. Additional Exercises 1. Program demonstrating Exceptions in JAVA. 2. Program using Adapter Classes. 3. Program using String and StringBuffer classes. 4. Programs that illustrate the use of files and streams. 5. Programs to draw various shapes using applets a) Cylinder b) cube c) Square inside a circle d) circle inside a square 6. Understand and handle mouse events and keyboard events. 7. Demonstrate RMI (Remote Method Invocation) in Java. 8. Communicate between systems using TCP/UDP

3 1. Polymorphism in Java Objective: To demonstrate the concept of polymorphism in Java. Create a base class called Shape. Use this class to store 2 double type values that could be used to compute the area of figures. Derive two specific classes called Triangle and Rectangle from the base class Shape. Using Run time polymorphism, calculate the area of Triangle and Rectangle. Sample I/O : Enter the sides : 4 8 Area of rectangle = 32 Area of triangle = 16 Pre Lab: To demonstrate compile-time Polymorphism Implement a Java program to define a class called Mobilephone with Model Number, Manufacture Name, Cost, Size, Color, MemoryCapacity, CameraPixelSize, etc.,. Include various types of constructors such as Default constructor, Parameterized constructor with two arguments, three arguments and four arguments. Create objects to invoke various types of constructors and demonstrate polymorphism.

4 2. Inheritance in Java Objective: To demonstrate the concept of inheritance in Java The diagram given in the next page represents a hierarchical classification of department details of an educational institution. Implement the same with appropriate classes. Sample I/O : Enter student name : Joe Enter reg. No. : Enter address : aaa, bbb, ccc Enter year of joining : 2013 Enter marks : Grade = A Pre Lab : Define a class named Vehicle with data members - name, model number, price, service station name; add constructor and display() method. Define another class Bike that extends the class Vehicle with data member discount rate and methods constructor, display(),discount() to compute discount. Use object of the extended class to compute the discount and display the details of the vehicle, inherited from its parent.

5 Person Category Student name regno address yearofjoinning getstudentdetails() display() Staff name id dateofjoining getdata() Marks m1 m2 m3 getmarkdetails() Result tot grade computegrade() Teaching qualification skills areaofinterest getpersonaldetails() display() NonTeaching certification yearsofexperience expertise inputdata() showdata()

6 3. Interface in Java Objective: To implement the concept of interface in Java. Create two interfaces Plumber and Electrician with methods unplugdrain() and changebulb() respectively. Create a class named Human. Derive three classes named HandyPerson, IndustrialPlumber and NobodySpecial from human. HandyPerson makes use of both Plumber and Electrician interfaces whereas IndustrialPlumber implements only the interface Plumber. Sample Output : objhandyperson : bulb changed, drain unplugged objindustrialplumber : drain unplugged PreLab : Create two interfaces inter1 and inter2 with the signatures meth1() and meth2() respectively. Create Class Test and implement the two interfaces and override the signatures. Also write your own methods in Class Test. Use the instance of the Class Test and call the methods.

7 4. Packages in Java Objective: To implement the concept of packages in Java. Create two packages having the same class name in each package. For example, create STUDENT class in two packages named P1 and P2 with data members such as name, register number, course, department, year of study. Create methods with same name in both the classes to accept data, display data, with different implementation. Create instance of class STUDENT from the above two packages. Invoke the methods using those objects (of both classes named STUDENT) Sample input / output : Enter student name : XXX Enter reg. No. : 3456 Enter course : cse Year of study : 2010 XXX 3456 cse 2010 from p1 package PreLab : Define a package named in that contains only one class named InValue. This class contains three methods named stringreader(), intreader() and fractreader() to read a string, integer, and fractional number respectively. Import the in package in the code InValueDemo.java that contains only one class named InValueDemo. This class contains the main() method that creates an object for the class InValue and then invokes the stringreader(), intreader() and fractreader() methods.

8 5. Program to create multiple threads in JAVA. Objective: To implement the concept of threads in JAVA. Create three threads Fact, Sum, and MultiplicaionTable. Fact thread should produce factorial values. Sum thread should produce sum of natural numbers FiveTable thread class should produce table. From the main class apply different methods using Thread class and call the above said classes.(e.g.: priority(),sleep(),suspend(),resume(),isalive() and join() methods) Sample input/output : Fact thread : 120 Sum thread : 20 FiveTable thread : Fact thread : PreLab : Write a simple program to create a thread using Thread class. Call the start() method which gives a call to run().

9 6. Simple Applet using Labels, Text Field and Buttons (Calculator) Objective: To create an Applet in JAVA, that shows the manipulation of Labels, Text Field and Buttons (Calculator application) Implement a java Applet application to design a calculator. Include the options for Backspace, CE, C, MC, MR, = and sqrt Add buttons for basic keys such as +, -, *, / Sample output : PreLab : Create a Login screen that will contain two text boxes for User Id and Password, two buttons to Submit and Cancel with appropriate labels. Use AWT package to do the above.

10 7. Simple Applet using Option Buttons, Choice, List and Scrollbars Objective: To design a Student Response Form with java Applet application. Create a Student Response Form, which include details such as Name, register number, sex, degree, branch, year of study date of birth, address (include id), Hobby and Extra-Curricular activities. For getting these details, use appropriate GUI interface elements such as Label, Textfield, Textarea, List/Choice, radio Button, Checkbox Button etc., Add appropriate event handling mechanism to these controls. The event handler should validate the keyed in input. For example, Name field cannot be blank, register number should be 9 digits, etc. Combine all these collected details in a simple English Sentence form and display it in a Textarea control. Sample output : Display the student response form PreLab : Create a simple form simulating the online mobile recharging, adding the relevant controls.

11 8. Stand alone GUI interface using Frames (Text Editor with menus) Objective: To create a standalone graphical user interface using frames. Create a java application using frames to create a simple notepad editor, which includes options for File Open, File Save, Cut, Copy, Paste, Find and Replace option using dialog box. File menu consists of submenus like New, Open, Save and Quit. Edit menu consists of Cut, Copy, and Paste, Find and Replace as submenus. Sample output : PreLab : Create a simple frame by extending the Frame class in an Applet window. Call the appropriate methods to set the size of the Frame and assign a suitable name for it.

12 9. Applet demonstrating font features Objective: Create a java applet program that demonstrates the font features. 1. Creating text using different font types. 2. Apply the various font sizes and styles. 3. Manage text output using Font Metrics 4. Use methods like getfamily() getavailablefontfamilynames(), Font( ), setfont( ), getallfonts(), getfont(), byteswidth(..), charwidth(..) etc. Sample output : Courtesy : Herbert Schildt, The Complete Reference JAVA 2 PreLab : Create a class that inherits Font class and assign values to the predefined variables of the class. Assign these values to the object of the Font class and observe the result.

13 10. Applet using Panels and Layout Managers Objective: To demonstrate panels and the various layout managers using Applet. Create an Applet for layout demo. Add various controls like textbox, checkbox. Add some meaningful text on the screen Apply the various layouts like Flow Layout, Border Layout, Insets, Grid Layout and Card Layout. Sample Output : PreLab : Create an Applet extending the Panel class. Use methods that loads and displays images, plays audio clips.

14 11. Applet demonstrating graphics features using brush styles, colors Objective: To demonstrate the various graphics features available in JAVA by taking paintbrush application as an example. Implement a java program to design paintbrush application using menus. Extend Applet class that contains various methods from Graphics class for drawing lines, drawing and filling circle, rectangle, oval, etc Menu includes various options to select circle, ellipse, square, and rectangle. Include facility for selecting brush style and color for the selected object. Implement this with popup menu as well. Sample output : Prelab : Create a pie chart with partitions painted in different colors.

15 12. Library Management using JDBC Objective: To understand database connectivity, operation and manipulation using JDBC, with the help of a library management system. I. Basic steps to use a database in Java Load the JDBC driver Specify the name and location of the database being used Connect to the database with a Connection object Execute a SQL query using a Statement object Get the results in a ResultSet object Finish by closing the ResultSet, Statement and Connection object II. Database manipulation Create a frame and controls like textbox for entering text and for displaying the details, list for displaying the available list of books, grid for searching, etc. Create tables like Books, Journals, Users, etc Enter some book name in text field and display its details, if the record is available. Enter the details of new books received in the library and add this new record to the database. Create windows for issue and return of books and update the database accordingly. Search the database to check for the books matching the given condition(s). Delete the record details of a book, if it was lost.

16 Sample Output : PreLab : Connect to a database using a Connection object and display the data available in the tables.