JNTUH B.Tech 4th Year 1 sem Information Technology R13 (4-1) Mobile Applications Development Lab R13 syllabus.

JNTUH B.Tech 4th year (4-1) Mobile Applications Development Lab gives you detail information of Mobile Applications Development Lab R13 syllabus It will be help full to understand you complete curriculum of the year.

Contents: Mobile Application Development (Through J2ME) LABORATORY

Objectives

• Week – 1 Installation of Java Wireless Toolkit (J2ME)
• Week – 2 Working with J2ME Features
• Week – 3 Threads & High Level UI
• Week – 4 Working on Drawing and Images
• Week – 5 Developing Networked Applications using the Wireless Toolkit
• Week – 6 Authentication with a Web Server
• Week – 7 & 8 Web Application using J2ME

Outcomes

• Ability to install J2ME toolkit.
• Ability to develop the user interface and authenticate with a Web Server..
• Ability to design Web application using J2ME.

Mobile Application Development (Through J2ME) LABORATORY

Objective

In this lab, a student is expected to design, implement, document and present a mobile client/server system using standard Java and Java 2 Micro Edition (J2ME) platform. Specifically it is required to design and implement a system that consists mainly of a mobile client (MC) and a Proxy Server (PS). MC will be written in J2ME, MIDP 2.0, while PS will be written in standard Java. It is necessary to use a mobile phone emulator to develop and demonstrate the experiments.

It may be necessary to use other components or existing resources (servers) as needed. For instance a database local to PS or a web service available on the Internet that can be invoked by the PS.

Week – 1: Installation of Java Wireless Toolkit (J2ME)

• If the Java Development Kit (JDK) is not there or only having the Java Runtime Environment (JRE) installed, install the latest JDK from httP://java.sun.com/javase/dowflIoas/iflj5p Current stable release of Java is JDK 6 Update 7 but check the web page in case there are newer non-beta releases available.
• Next, download the Java Wireless Toolkit (formerly called J2ME Wireless Toolkit) from: http://java.sun.com/products/sjwtoolkitI download.html.
• Run the installer (for example, for Windows it is: sunjava_wireless_toolkit- 2_5_2-windows.exe). The installer checks whether a compatible Java environment has been pre-installed. If not, it is necessary to uninstall old versions of Java and perform Step 1 again.

Once after successful installation of Java and the tool kit compile this program and run the following program in the toolkit. Steps to run this program in toolkit:

• Start -> All Programs -> Sun Java Tool Kit -> Wireless Tool Kit
• Click New Project — Enter Project Name -> Enter Class Name -> Click on Create Project.
• Choose appropriate API Selection and Configurations.
• Place Java Source file in WTK2.l / WTK2.2\ apps\ projectname\ src
• Build the Project.
• Run the Project.

Import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class HelloWorid extends MlDlet{
private Form form;
private Display display;
public HelloWorld3{
superb:
}
public void startAppO{
form = new Form(”Hello World”);
String msg = “Hello WorldWIW”;
form.append(msg);
display = Display.getDisplay(this);
display.setCurrent(form);
)
public void pauseAppO{}
public void destroyApp(boolean unconditional){
notifyDestroyed();

}
}

Week – 2 Working with J2ME Features

Working with J2ME Features: Say, creating a Hello World program
Experiment with the most basic features and mobile application interaction
concepts (lists, text boxes, buttons, radio boxes, soft buttons, graphics, etc)

2.1 Create a program which creates to following kind of menu.
*Cut
* copy
*past
* delete
* select all
* unselect all

2.2 Event Handling.

Create a menu which has the following options:

* cut – can be on/off
* copy – can be on/off Copy
* paste – can be on/off
* delete – can be on/off
* select all – put all 4 options on
* unselect all – put all 4 options off

2.3. Input checking

Create an MIDP application which examine, that a phone number, which a user has entered is in the given format.

* Area code should be one of the following: 040, 041, 050, 0400, 044
* There should 6-8 numbers in telephone number (÷ area code)

Week – 3 Threads & High Level UI:

3.1. Create a slide show which has three slides, which includes only text. Program should change to the new slide after 5 seconds. After the third slide program returns to the first slide.

3.2 High-level UI Create a MIDP application, which show to the user 5-10 quiz questions. All questions have 4 possible options and one right option exactly. Application counts and shows to the user how many right answers were right and shows them to user.

3.3 Create a MIDP application, where the user can enter player name and points. The program saves the information to the record using RMS at MIDP device. Program should also print out the top 10 player list to the end user. You can use this class in your game if you made own class for saving and reading record sets.

Week -4 Working on Drawing and Images

4.1 Create a slide show which has three slides, which includes pictures at PNG format. Program should change to the new slide other 5 seconds.

4.2 Create a MIDP application, which draws a bar graph to the display. Data – values can be given at int[J array.

4.3 Create a MIDP application, which draws a bar graph to the display. Data values can be given at int[J array. You can enter four data (integer) values to the input text field.

Week -5 Developing Networked Applications using the Wireless Toolkit Creating a Simple Client-Server Application

Create, compile and run a basic UDP-based client-server application.

1. Creating the Datagram Server project Click on Wireless Toolkit 2.5.2 under the group: All Programs?Sun Java (TM) Wireless Toolkit 2.5.2.
2. Click on ‘New Project…’ button.
3. Enter project name as ‘DatagramServer’. Enter MiDlet name as ‘DatagramServer’. Note that the Midlet name is the same as the name of the class in the source code, which extends the MiDlet class, othervise the application won’t run.
4. Another window pops up where it is required to select a target plafform. Select ‘MIDP 1.0’ from the drop down list.
5. After clicking OK, the project is created; and the Wireless Toolkit tells that the name of the folder where source code files are created. The path of the source code folder is displayed in the debug output window.

Creating and Compiling the DatagramServer source files

The Wireless Toolkit does not come with an IDE by default so Use any IDE or a text editor like Notepad.

1. Create a new text file called DatagramServer.java in the source folder of the project. The exact path of this folder is displayed in the Wireless Toolkit window.
2. Paste contents DatagramServer.java from into the source file.

Running your Server application on the Phone simulator

1. After compiling the project successfully, click on the Run button in the Wireless Toolkit window.
2. A graphical window depicting a phone handset will appear with the name of your application highlighted on its screen as shown below.
3. To start the application, click on the right soft-key (marked with a dot) below the ‘Launch’ command.
4. The phone simulator might ask if it is OK to run the network application. Select Yes’ by clicking on the appropriate soft-key. The server is now up and running.
5. Keep the server running during the creation, compilation and running of the Datagram Client application.

Creating the DatagramClient project

1. Use the same instance of the Wireless Toolkit that is used for creating and compiling the Datagram Server project.
2. Click on New Project….’ button.
3. A new window pops up. Enter project name as ‘DatagramCiient’. Enter MlDlet name as ‘DatagramClient’. Note that the Mid let name is the same as the name of the class inthe source code, which extends the MiDlet class.
4. Another window pops up where one has to select a target platform. 4 Select ‘MIDP 1.0 from the drop down list.
5. After clicking OK, the project is created and the Wireless Toolkit tells where to place the source code files. The path of the source code folder is displayed in the debug output window as explained before. 4

Creating and Compiling the DatagramClient source files

1. Create a new text file called DatagramClientjava in the source folder of the project.
2. Paste contents DatagramClient.java into the source file.
3. Then click on the Build button in the Wireless Toolkit window. If the compilation is OK, it will say Build Complete in the window’s debug output window, otherwise it will show the errors. Note: In the source code, use the System.out.println() statement to output debug information to this window.

Running your Client application on the Phone simulator

1. After compiling the project successfully, click on the Run button in the Wireless Toolkit window.
2. A graphical window depicting a phone handset will appear with the name of the application highlighted on its screen.
3. To start the application, click on the right soft-key (marked with a dot) below the ‘Launch’ command.
4. The phone simulator might ask if it is OK to run the network application. Select Yes’ by clicking on the appropriate soft-key. The client is now up and running.
5. When the client executes on the phone simulator, one should see a text box with the caption ‘Message’. Enter any message and press the right soft-key (corresponding to Send). If the client-server application is working properly, the screen of the server phone will display the message sent by the client and the client screen will now display a message sent by the server in response. The response message from the server is the original client message in reverse.
6. Try various features of the phone simulator including the different look-and feel options.

Week – 6 Authentication with a Web Server

6.1 Write a sample program to show how to make a SOCKET Connection from j2me phone.

This J2ME sample program shows how to how to make a SOCKET

Connection from a J2ME Phone. Many a times there is a need to connect backend HTTP server from the J2ME application, shows how to make a SOCKET connection from the phone to port 80.

6.2 Login to HTTP Server from a J2ME Program

This J2ME sample program shows how to display a simple LOGIN SCREEN on the J2ME phone and how to authenticate to a HTTP server. Many J2ME applications for security reasons require the authentication of the user. This free J2ME sample program, shows how a J2ME application can do authentication to the backend server.

Note: Use Apache Tomcat Server as Web Server and Mysql as Database Server.

Week – 7 & 8 Web Application using J2ME

The following should be carried out with respect to the given set of application domains: (Assume that the Server is connected to the well-maintained database of the given domain. Mobile Client is to be connected to the Server and fetch the required data value/information)

• Students Marks Enquiry
• Town/City Movie Enquiry
• Railway/Road/Air (For example PNR) Enquiry/Status
• Sports (say, Cricket) Update
• Town/City Weather Update
• Public Exams (say Intermediate or SSC)/ Entrance (Say EAMCET) Results Enquiry

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Divide Students into Batches and suggest them to design database according to their domains and render information according to their requests.

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