Description: Billing Application
The client uses MS Excel, and maintains their product list, customer list, and prints the invoice, however it is not possible them to share the data from multiple system in multi user environment, there is lot of duplicate work, and chance of mistake. When the product price are changed they need to update each and every excel file. There is no option to find and print previous saved invoice. There is no security; any body can access any report and sensitive data, also no reports to find out the sales volume, stock list, and summary report. This eBilling and invoicing system is used to overcome the entire problem which they are facing currently, and making complete atomization of manual billing and invoicing system
Objective
This section presents a conceptual overview of the solution, and then provides an introduction to its requirements.
Solution Concept
The eBilling and Invoice System consists of:
This project is made for one of the big decorator services in Mumbai, they supply decorating item to film industry for movie shooting. Presently they issue their client handwritten invoice and they enter details in manual register. And maintain MS Excel file for product rate. They want computerization of their manual invoice and bill generation process.
When we first meet with the customer we find.
1. They are not expertise in computer operation
2. They are used to MS Excel, grid like entry
3. Presently they are maintaining their products list in MS Excel, they want this data should be imported in new software
4. They want very fast processing of bill
5. As they are catering service to the film industry and their customer are high profile. They are very strict in bill correctness, so there is no margin of error.
6. They have 3 pc in their office running WinXP home edition.
7. They are using P-IV 3 GHZ, 160 GB HDD, 512 MB RAM in their PCs
8. They are very strict of software licensing.
9. They are very strict on software completion time and they want it should complete before the deadline.
10.They want every report should be Export in MS Excel
11. All report should be printed in DOS-Matrix and Ink Jet Printer.
12. Only Accountant and his team should have permission to use the software.
13. For future modification of any master should be done by customer only.
14. Backup of the main database should be done by the software.
15. They have 3 different company names, software should have option to select the company name while entering bill and generate reports, and should option to add future company.
16. Each customer can hire multiple products.
17. Maximum number of products in a bill is 10.
18.While entering bill, client name should come automatically for previously created bill.
19. Bill/invoice should print net amount in words automatically.
20. The CST/VAT tax stamp should print in bill invoice and they want software should have an option to change the text if Income Tax department change the stamp.
What is JAVA?
Java is an entire programming language resembling C or C++. It takes a sophisticated programmer to create Java code. And it requires a sophisticated programmer to maintain it. With Java, you can create complete applications. Or you can attach a small group of instructions, a Java "applet" that improves your basic HTML. A Java Applet can also cause text to change color when you roll over it. A game, a calendar, a scrolling text banner can all be created with Java Applets. There are sometimes compatibility problems between Java and various browsers, operating systems or computers, and if not written correctly, it can be slow to load. Java is a powerful programming language with excellent security, but you need to be aware of the tradeoffs.
What is JSP?
Short for Java Server Page. A server-side technology, Java Server Pages are an extension to the Java servlet technology that was developed by Sun. JSPs have dynamic scripting capability that works in tandem with HTML code, separating the page logic from the static elements -- the actual design and display of the page -- to help make the HTML more functional(i.e. dynamic database queries). A JSP is translated into Java servlet before being run, and it processes HTTP requests and generates responses like any servlet. However, JSP technology provides a more convenient way to code a servlet. Translation occurs the first time the application is run. A JSP translator is triggered by the .jsp file name extension in a URL. JSPs are fully interoperable with servlets. You can include output from a servlet or forward the output to a servlet, and a servlet can include output from a JSP or forward output to a JSP. JSPs are not restricted to any specific platform or server. It was orignially created as an alternative to Microsoft's ASPs (Active Server Pages). Recently, however, Microsoft has countered JSP technology with its own ASP.NET, part of the .NET initiative.
What is JavaScript?
When new technologies start, they sometimes acquire names that will be confusing in the future. That's the case with JavaScript. JavaScript is not 'Java'. JavaScript is a simple programming language that was developed by Netscape that writes commands to your browser when the HTML page is loaded. Note: you can have compatibility issues with Java Script, especially in newer versions of Browsers.
What is Java?
Java is a simple, distributed object oriented programming language which provides the security, High performance, robustness.
Java is a portable and Architectural neutral language which can be Interpreted.
Java is multithreaded and Dynamic language.
About Java
Java is a Programming language originally developed by James Gosling at Sun Microsystems and released in 1995 as a core component of Sun Microsystems' Java Platform. The language derives much of its Syntax from c and C++ but has a simpler object Model and fewer low-level facilities. Java applications are typically compiled to bytecode(class file) that can run on any Java Virtual machine (JVM) regardless of computer architecture.
Why Software Developers Choose Java?
Java with its versatilty, efficiency, and portability, Java has become invaluable to developers by enabling them to:
• Write software on one platform and run it on virtually any other platform
• Create programs to run within a Web browser and Web services
• Develop server-side applications for online forums, stores, polls, HTML forms processing, and more
• Combine applications or services using the Java language to create highly customized applications or services
• Write powerful and efficient applications for mobile phones, remote processors, low-cost consumer products, and practically any other device with a digital heartbeat.
Goals in creation of Java
There were five primary goals in the creation of the Java language
1. It should be "simple, object oriented".
2. It should be "robust and secure".
3. It should be "architecture neutral and portable".
4. It should execute with "high performance".
5. It should be "interpreted, threaded, and dynamic".
Architecture of Java
Java's architecture arises out of four distinct but interrelated technologies:
• The Java programming language
• The Java class file format
• The Java Application Programming Interface
• The Java virtual machine
When you write and run a Java program, you are tapping the power of these four technologies. You express the program in source files written in the Java programming language, compile the source to Java class files, and run the class files on a Java virtual machine. When you write your program, you access system resources (such as I/O, for example) by calling methods in the classes that implement the Java Application Programming Interface, or Java API. As your program runs, it fulfills your program's Java API calls by invoking methods in class files that implement the Java API.
The Java Virtual Machine
At the heart of Java's network-orientation is the Java virtual machine, which supports all three prongs of Java's network-oriented architecture: platform independence, security, and network-mobility.
A Java virtual machine's main job is to load class files and execute the bytecodes they contain. As you can see in Figure 1-3, the Java virtual machine contains a class loader, which loads class files from both the program and the Java API. Only those class files from the Java API that are actually needed by a running program are loaded into the virtual machine. The bytecodes are executed in an execution engine.
Coding standard
Java suggests set of coding standard to follow while writing java program. Coding standard helps author as well as others to better understand program. It reduce amount of debugging time considerably. Basically coding standard suggests how to name class, methods variables of different scope, package etc.
Writing a Java program
In the Java programming language, all source code is first written in plain text files ending with the .java extension. Those source files are then compiled into .class files by the javac compiler. A .class file does not contain code that is native to your processor; it instead contains bytecodes — the machine language of the Java Virtual Machine1 (Java VM). The java launcher tool then runs your application with an instance of the Java Virtual Machine.
Download Billing Management System