JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD MCA MOBILE APPLICATION DEVELOPMENT Previous Question Paper (December - 2019 - R13)
Part A is compulsory which carries 20 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
Compare J2EE and J2SE applications.
Answer
J2SE (Java 2 Platform, Standard Edition) is designed for building desktop and standalone applications, providing core APIs for networking, security, database access, and GUI development. J2EE (Java 2 Platform, Enterprise Edition) is built on top of J2SE and is designed for large-scale, multi-tier, distributed enterprise applications. While J2SE focuses on client-side functionality, J2EE provides server-side components like EJB, Servlets, and JSP to manage transactions, messaging, and web services.
What is JAR file? Explain briefly its attributes in J2ME.
Answer
A JAR (Java Archive) file is a package file format used to aggregate many Java class files and associated metadata and resources into a single file for distribution. In J2ME, JAR files are essential for application deployment. Key attributes include:
- MIDlet-Name: The name of the application.
- MIDlet-Version: The version number of the application.
- MIDlet-Vendor: The entity that created the application.
- MIDlet-1: Defines the class name, icon, and main class of the MIDlet.
Write the steps to determine the color attribute of a device in J2ME.
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Explain briefly about types of JDBC drivers.
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Describe HTTP protocol and its header attributes.
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Part B
What are the challenges faced by mobile small computing industries?
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Write about radio data networks.
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What are the limitations of radio transmission?
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Discuss about various profiles of J2ME.
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What is Midlet suite? Explain in detail.
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Write a Midlet program to display “WELCOME TO JNTUH”.
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Explain J2ME architecture with suitable diagram.
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Explain how traffic is controlled in networks in mobile technology.
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What is Alert class? Create J2ME application to give Alert Sound.
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Discuss about clipping regions in Canvas class.
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Elaborate Gauge class and implement user Interaction with Gauge class.
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What is record enumeration class? Explain it briefly.
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Write the steps to read mixed data types from record enumeration.
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What is save point? Explain it briefly.
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Write J2ME application to search a simple data type in record store.
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Write J2ME application to read data from web server.
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Explain How a process is transmitted as back ground process in J2ME applications.
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Discuss about HTTP Connection in detail.
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