Application Frameworks

   Introduction to the System  The Lotus Tours Company which is located in Nugegoda, provides a good service to the customers who wish to visit sacred places in India and Thailand. India and Thailand are some beautiful countries in Asia. A trip to these countries can reveal numerous mystic things regarding its culture, art tradition history etc. Any person who wish to travel through the Lotus Company are allowed. Even the customers who doesn’t have a passport can reserve a date and get registered. Company will get all the details from the customer who doesn’t have a passport and help to prepare a new passport for them They have many packages in different prices. To get registered every customer should deposit Rs. 10,000 in advance. Then the rest of the amount are paid in installments prior to the tour date or the full amount for the tour can be paid at once. When a customer make a reservation, all the reservation details are recorded in a file and unique ID numbe...

Introduction to Apache Maven   What is maven? Maven is a project management tool which encompasses a project object model, a set of standards, a project life cycle, a dependency management system, and logic for executing plugin goals at defined phases in a life cycle. When you use Maven, you describe your project using a well-defined project object model, Maven can then apply cross-cutting logic from a set of shared (or custom) plugins. The great majority of Maven users are going to call Maven a “build tool”: a tool used to build deployable artifacts from source code. Build engineers and project managers might refer to Maven as something more comprehensive: a project management tool. What is the difference? A build tool such as Ant is focused solely on preprocessing, compilation, packaging, testing, and distribution. A project management tool such as Maven provides a super set of features found in a build tool. In addition to providing build capabilities, Maven can als...

Liscov Substitution Principle  Inheritance is one of the important OOP concept. Liscov Substitution Principle is applied when using inheritance in our program. We must make sure that the child classes just extend without replacing the functionality of parent class. Otherwise the child classes can produce undesired effects when they are used in existing program modules. child component must be completely substitutable for their parent components . As an example if we take the classes " Rectangle" and "Square" In mathematics square is also a kind of rectangle. which makes the square class a child of rectangle class. rectangle class has some methods and they might be over ridden by the square class. if we have a function draw() and we do not know what shape will be returned but it will surely be a rectangle. If we give the length = 10 cm and width = 5 cm violating the Liscov Substitution principle is when the first length entered will be taken as the length of ...

What is AngularJS and How it works ? What is AngularJS ?                         Definition of AngularJS as put by its official documentation is as follows: “ AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly. Angular’s data binding and dependency injection eliminate much of the code you currently have to write. And it all happens within the browser, making it an ideal partner with any server technology.” AngularJS is a JavaScript MVC Framework that integrates two-way data binding, Angular does one very specific job very well – that is, moving data around inside a single-page application, dynamically updating the view as the data changes without the need for specific listener code. If you have a website where this ty...