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Note for Object Oriented Programming Using JAVA - OOPJ By Umesh Kumar

  • Object Oriented Programming Using JAVA - OOPJ
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LECTURE NOTES ON OOPs USING JAVA MSC (CS) I YEAR I SEMETER (PAPER-III) Mr. UMESH KUMAR, MCA (GGU) GGU) DEPARTMENT OF COMPUTER SCIENCE AND INFORMATION TECHNOLOGY BILASPUR VISHWAVIDYALAY, BILASPUR NEAR GANDHI CHOWK CHOWK,, CHHATTISAGARH 495009 By Mr. UMESH KUMAR, MCA (GGU) Page | 1

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PAPER-III OOPs USING JAVA UNIT–I An overview of Java Object-Oriented Programming: Classes and Objects, Variables, Constants, and Data Types, Primitive Data Types, Variable Scope, Wrappers, Conditional Statement if, switch Statement, Inheritance, Method Overriding, Class Methods: Method Arguments, Method Overloading, Constructors, Keyword super, this, final, static, Passing by Value, passing by Reference, Variable Scopes, Life Cycle of a Java Program, JDK and JRE, Java Editions, Polymorphism, Dynamic method dispatch. UNIT-II Package, Applet, Swing and JDBC Packages, Interfaces, and Encapsulation, Abstract Classes, Graphic User Interface, Event Handling , Java Applets: Writing Applets Using Swing, Error Handling, Java Exceptions, Databases Using JDBC: JDBC Driver Types. UNIT–III Network-Socket Programming and JDBC Introduction to Collections and Introduction to Generics, Java Serialization, Network Programming, Socket Programming, and Processing E-Mails with Java: Protocols and Servers, Creating Mailer, Required Supporting Classes, Writing the Mail Sender, Introduction to Multi-Threading, Swing with J-Table: J-Table and the MVC Paradigm, Remote Method Invocation (RMI), Writing RMI Clients, Finding Remote Objects. Java Enterprise Edition Overview: JCP, JSR, and Other Acronyms, Tiers of Java EE Applications. UNIT–IV Servlet, Java Beans and JNDI What is Servlet?, Deploying a Servlet, Installing Glass Fish Plug-In for Eclipse, creating Servlet with Eclipse, Browser-Servlet Data Flow, HTTP Get and Post Requests, Cookies, Server-Side http Session, Filters, Event Listeners, Asynchronous Servlets. Java Server Pages (JSP): Embedding Java Code into HTML, Implicit JSP Objects, Overview of the JSP Tags, Directives, Declarations, Expressions, JavaBeans, JSTL. Developing Web Applications with servlet and JSP. UNIT–V Enterprise JavaBeans (EJB) and other APIs Overview of EJB, Types of EJB, Stateless and Stateful Session Beans, Singleton Beans, Deploying EJB, Message-Driven Beans, Timer Service. Introduction to the Java Persistence API: Mapping Objects to Database Tables, JPQL, Overview of Spring MVC, Introduction to Hibernate Framework By Mr. UMESH KUMAR, MCA (GGU) Page | 2

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UNIT–I An Overview of Java An overview of java Java programming language was originally developed by Sun Microsystems, which was initiated by James Gosling and released in 1995 as core component of Sun Microsystems.s Java platform (Java 1.0 [J2SE]). As of December 08 the latest release of the Java Standard Edition is 6 (J2SE). With the advancement of Java and its wide spread popularity, multiple configurations were built to suite various types of platforms. Ex: J2EE for Enterprise Applications, J2ME for Mobile Applications. Sun Microsystems has renamed the new J2 versions as Java SE, Java EE and Java ME respectively. Java is guaranteed to be Write Once, Run Anywhere Java is:  Object Oriented: In java everything is an Object. Java can be easily extended since it is based on the Object model.  Platform independent: Unlike many other programming languages including C and C++ when Java is compiled, it is not compiled into platform specific machine, rather into platform independent byte code. This byte code is distributed over the web and interpreted by virtual Machine (JVM) on whichever platform it is being run.  Simple: Java is designed to be easy to learn. If you understand the basic concept of OOP java would be easy to master.  Secure: With Java's secure feature it enables to develop virus-free, tamper-free systems. Authentication techniques are based on public-key encryption.  Architectural- neutral: Java compiler generates an architecture-neutral object file format which makes the compiled code to be executable on many processors, with the presence Java runtime system.  Portable :being architectural neutral and having no implementation dependent aspects of the specification makes  Java portable. Compiler and Java is written in ANSI C with a clean portability boundary which is a POSIX subset.       Robust: Java makes an effort to eliminate error prone situations by emphasizing mainly on compile time error checking and runtime checking. Multi-threaded: With Java's multi-threaded feature it is possible to write programs that can do many tasks simultaneously. This design feature allows developers to construct smoothly running interactive applications. Interpreted: Java byte code is translated on the fly to native machine instructions and is not stored anywhere. The development process is more rapid and analytical since the linking is an incremental and light weight process. High Performance: With the use of Just-In-Time compilers Java enables high performance. Distributed: Java is designed for the distributed environment of the internet. Dynamic: Java is considered to be more dynamic than C or C++ since it is designed to adapt to an evolving environment. Java programs can carry By Mr. UMESH KUMAR, MCA (GGU) Page | 3

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extensive amount of run-time information that can be used to verify and resolve accesses to objects on run-time. History of Java: James Gosling initiated the Java language project in June 1991 for use in one of his many set-top box projects. The language, initially called Oak after an oak tree that stood outside Gosling's office, also went by the name Green and ended up later renamed as Java, from a list of random words. Sun released the first public implementation as Java 1.0 in 1995. It promised Write Once, Run Anywhere (WORA), providing no-cost runtimes on popular platforms. On 13 November 2006, Sun released much of Java as free and open source software under the terms of the GNU General Public License (GPL). On 8 May 2007 Sun finished the process, making all of Java's core code free and opensource, aside from a small portion of code to which Sun did not hold the copyright. Tools you will need: For performing the examples discussed in this tutorial, you will need a Pentium 200MHz computer with a minimum of 64 MB of RAM (128 MB of RAM recommended). You also will need the following software’s:  Linux 7.1 or Windows 95/98/2000/XP operating system.  Java JDK 5  Microsoft Notepad or any other text editor Java language features  Platform independence  Totally Object-oriented, but simpler than C++  Dynamic incremental loading and linking  Automatic GC  Multithreaded  Systematic class, package, and source file naming  GUI and graphics programming  Web and network applications support  Internationalization (programs in Unicode) Object-Oriented Programming:Java is a high-level programming language originally developed by Sun Microsystems and released in 1995. Object means a real-world entity such as a pen, chair, table, computer, watch, etc. Object-Oriented Programming is a methodology or paradigm to design a program using classes and objects. It simplifies the software development and maintenance by providing some concepts:  Object  Class  Inheritance  Polymorphism By Mr. UMESH KUMAR, MCA (GGU) Page | 4

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