What technologies are used to create web applications in Java?

Vaibhav Kothia May 26, 2023 0 Comments

1. JavaServer Pages (JSP): JSP is a technology used to create dynamic web pages. It is a server-side technology that uses Java code to generate HTML, XML, or other markup. Example: Apache Tomcat is a popular open source web server that uses JSP to create dynamic web pages.

2. Java Servlets: Java servlets are server-side programs that are used to process user requests and generate dynamic content. Examples: Apache Tomcat and Jetty are popular open source web servers that use servlets to create dynamic web pages.

3. JavaServer Faces (JSF): JSF is a component-based web application framework for Java. It is used to create user interfaces for web applications. Example: Apache MyFaces is an open source implementation of JSF.

4. Java Database Connectivity (JDBC): JDBC is a technology used to connect to databases from Java programs. Examples: Oracle JDBC, MySQL Connector/J, and PostgreSQL JDBC are popular JDBC drivers.

5. Java Message Service (JMS): JMS is a technology used to send messages between different components of a distributed system. Example: Apache ActiveMQ is an open source implementation of JMS.

What is the purpose of Java servlets?

Vaibhav Kothia May 26, 2023 0 Comments

Java servlets are server-side programs that provide a powerful mechanism for developing server-side applications. Servlets are Java classes that are compiled to platform-independent byte code that can be loaded dynamically into and run by a Java-enabled web server.

Servlets provide a way to generate dynamic content on a web page. Servlets are used to build web applications such as online banking systems, online reservation systems, and any system that requires dynamic content.

For example, a servlet might be used to dynamically generate a web page that displays the current stock prices of a particular company. The servlet would query a database for the current stock prices, format the information, and then send the formatted information to the user’s browser.

What are ASP.NET Web Forms?

Vaibhav Kothia May 26, 2023 0 Comments

ASP.NET Web Forms are a part of the ASP.NET framework that allows developers to create dynamic, interactive websites and web applications using the .NET framework. It is a server-side technology, meaning that all the processing is done on the server before the page is sent to the user’s browser.

Web Forms use a page-based programming model where pages are composed of controls and code-behind files. Controls are elements that provide user interface capabilities such as text boxes, labels, and buttons. Code-behind files contain the logic that is executed when a page is requested.

For example, a web form might have a text box, a label, and a button. When the user enters a value into the text box and clicks the button, the code-behind file will be executed and the label will be updated with the value entered in the text box.

What is ASP.NET?

Vaibhav Kothia May 26, 2023 0 Comments

ASP.NET is a Microsoft web application framework used to create dynamic websites, web applications, and web services. It is a part of the .NET framework, which allows developers to create web applications using languages such as C# and Visual Basic.NET.

Example:

A web page created using ASP.NET could contain a form with text boxes, check boxes, and buttons. When the user clicks on a button, a request is sent to the server, which then processes the data and returns a response. The response could be a web page containing the results of the request or a confirmation message.