Computer Science and Engineering Department VI I - SEMESTER Subject Name : MIDDLEWARE TECHNOLOGIES LABORATORY Subject Code : IT-404

Objective  After completing this Lab, students will upgrade their knowledge in the field of various Middle ware Languages (CORBA, DOT NET, Java …)  Students will also get the clear view about the concepts of Beans, Web logic, Visual Basic  Getting more knowledge about Client Server Model through different languages  Students will understand and deal with Concepts like RMI, Stub/Skeleton, Marshalling, and Remoting.

Syllabus 1. Create a distributed application to download various files from various servers Using RMI. 2. Create a Java Bean to draw various graphical shapes and display it using or Without using BDK. 3. Develop an Enterprise Java Bean for Banking operations. 4. Develop an Enterprise Java Bean for Library operations. 5. Create an Active-X control for File operations. 6. Develop a component for converting the currency values using COM /.NET. 7. Develop a component for encryption and decryption using COM /.NET. 8. Develop a component for retrieving information from message box using DCOM /.NET. 9. Develop a middleware component for retrieving Stock Market Exchange Information using CORBA. 10. Develop a middleware component for retrieving Weather Forecast information Using CORBA. EXTRA EXPERIMENTS: 11. Program to connect two different system using Java. 12. Program to find out system properties using Java.

EX. No: 1 RMI  Aim: To create a distributed application to download various files from various servers using RMI  Algorithm:  Create four files – file interface, file implementation, file client and fileserver  In the file interface, class specify the prototype of the method that is to be implemented in the file implementation class  In the file implementation class, specify the implementation coding for the method defined earlier (download file[])  Try to read the contents of a file in this class  In the file client class try to write some contents into a file  In the fileserver class, try to register / bind the methods with the rmiregistry  Compile all the files and execute as specified to get the desired output.

EX. No: 2 DRAWING GRAPHICAL SHAPES  Aim: To Write an applet program to draw various graphical shapes.  Algorithm:  Create a class which extends Applet superclass and which implements ActionListener interface  Create five buttons with the required captions and add them to the container  Register the buttons with the ActionListener interface  In the Actionperformed () method, with the help of the instance, perform the action respectively  In the paint() method, check which button is pressed and display the shapes accordingly

EX. No: 3 LIBRARY OPERATION  Aim : To develop an Enterprise Java Bean for Library operations  Algorithm :  Create five programs – Book, Bookbome, Bookbean, Bookexception, and Bookclient  In the Bookhome class just invoke the create() method with appropriate arguments  In the Book class, just define the prototytpes of addbook(), removebook() and getcontents() methods  In the Bookbean class provide the implementation for the various methods  In the Bookexception class provide the implementation for BookException  In the Bookclient class get the customer name and the various books he wants, also perform the other operations accordingly

EX. No: 4 BANKING OPERATION  Aim : To develop an Enterprise Java Bean for banking operations  Algorithm :  Create four programs- Bankbean, Bankhome, Bank, and Bankclient  In the Bankbean class first define the prototypes of the various methods  Next, provide the implementation for ejbCreate(), ejbPostCreate(), credit(), and debit() methods  In the Bankhome class just invoke the methods create() and findbyprimarykey() with the respective number of arguments  In the Bankremote class just define the prototypes of the various methods which throws the Remoteexception  In the Bankclient class, display the options to the user and use the lookup() method and perform the operations accordingly

EX. No: 5 ACTIVE X CONTROL  Aim : To develop an Activexcontrol document and perform the various file operations on it.  Algorithm :  Create a new Activex control document in Visual Basic  Add the drive list, directory list and file list controls from the toolbox  Also add three textboxes correspondingly  Click on File -> make project1. ocx and specify the required name and location  Double click on each control to add the respective coding  click on debug-> start to execute the application

Ex.No :6 Currency Conversion using.NET  Aim : To develop a program for currency conversion.  Algorithm :  Design the form by using tools  Add the corresponding field to combo and List box  Develop the coding for the combo and list box  Correct the corresponding Indian currency values to the corresponding foreign currency values.

Ex.No :7 Encryption and Decryption  Aim : To develop a component for encryption and decryption by using Visual Studio.  Algorithm :  Declare the required controls.  Design the form by using tools such as label, text box and command button.  Write the coding for encryption, decryption and clear button.  Cipher text will be displayed in text2 and text3, again we choose the encryption button.  It shows the plain text in text box 4  Click the clear button to clear the text boxes.

Ex.No :8 Retrieving Information  Aim: To write a program for retrieving information from the message box using.NET  Algorithm:  Design the form by using tools such as text box, combo box and label  Load various the values in combo box such as satisfactory, good and fine  By using the condition loop, the selected item from the combo box will displayed in the message box.

Ex.No : 9 Retrieving Stock Market Exchange  Aim : To develop a middleware component for retrieving stock market exchange information using CORBA.  Algorithm :  Create a interface for stock market and save it with.idl extension  Create and implement the file.  Set the path and create helper and header class files.  Compile all the files using javac *.java  Run the application using stock market server name  Open a new window.  Run the client program.

Ex.No :10Retrieving Weather Forecasting  Aim : To develop a middleware component for retrieving weather forecasting information using CORBA.  Algorithm :  Create a interface for stock market and save it with.idl extension  Create and implement the file.  Set the path and create helper and header class files.  Compile all the files using javac *.java  Run the application using stock market server name  Open a new window.  Run the client program.

REFERENCES  W1   W2   W3   W4  us/library/kwdt6w2k(v=vs.71).aspxhttp://msdn.microsoft.com/en- us/library/kwdt6w2k(v=vs.71).aspx  W5   W6   W7 

Internal Mark Calculation MODEL  5 MODEL  5 MODEL 3100  5 TOTAL 

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