New Scripts | Java | Tutorials & Tips | JSP & Servlets

This article tells about the 2 architectures that we can use to build applications with Servlets and JSP.

This article aims at presenting how to create a servlet that sends a zip file to the user.

Learn how JSP technology and LaTeX help online science education and research. JSP pages and custom tags can get LaTeX-formatted formulae onto the Web in a fashion that is easy for the author and doesn't require any special client-side software. Through increasingly efficient methods, you'll see how server-side Java technology can harness the power of disparate third-party tools to solve seemingly intractable problems.

This article shows you how to customize JSP tags to get even more out of JSP technology. Its detailed techniques explain how you can add more complex logic to your JSPs, take firmer control of data display, and share data among tags. All without having to teach your front-end Web developers how to write Java code.

This article describes what are application events and how you can use them. Focuses on two important web application events; Application startup and shutdown, Session creation and invalidation.

This article describes everything you need to know to send emails using JSP pages. Also describes better practices for encapsulating re-usable code in JavaBeans. Online demo available.

This article discusses using the JSP and JDBC technologies to integrate static, dynamic, and database content in Web sites. For the purposes of simplicity and illustration, the JSP pages here use short scriptlets to expose the JSP developer to the underlying JDBC concepts instead of hiding them in custom tags. The author introduces a key design approach that integrates JavaBeans components with JDBC, similar to the way that JavaServer Pages technology already uses beans with HTTP. He also provides code for implementing this integration.

Why invent the wheel every time you develop an application in Java? Writing a J2EE web application is complicated enough; you would not write a linked list module in C++ every time you started a new project. You would rather use another person's implementation. The same reuse-idea surely applies to server-side web development. This article looks at the best practices of using one popular web application toolkit, Expresso Framework. The idea of using custom tags, JSP, and the MVC paradigm are suitable for such frameworks. It will illustrate the best of practice through an on-line stock trading program example.

Tags are reusable code libraries and allow easier separation of HTML and Java code. This tutorial first introduces JSP custom tags and then moves forward to build a simple JSP tag. Every step has been explained in detail. Online demo available.

This tutorial is second in a series of tutorials about JSP tags. In this tutorial we will learn what are scripting variables in JSP tags and how to make use of them. Online demo available.

This step by step tutorial describes how to access database using JDBC with JSP tags in a JSP page. Also describes how to iterate through the records using BodyTag interface. Online demo available.

The corporate firewall is a double-edged sword. It helps prevent unauthorized access to the corporate Web services, but can disable access for legitimate clients. Due to the number of safety measures taken by system administrators, HTTP has become the universal entry mechanism to the corporate network. Where technologies such as CORBA and DCOM have failed because of the firewall, technologies such as SOAP have been developed to provide safe and reliable access through firewall protection. This article explores an alternative to SOAP, the use of Java objects over HTTP. In addition, it uses J2EE servlet technology as server-side middleware to the business data.

An article on exception handling in JSP pages. Describes how to catch exceptional events and display a useful message to the user. Online demo available.

This tutorial describes <jsp:useBean>, <jsp:setProperty> and <jsp:getProperty> tags and demonstrates how to call JavaBean from within a JSP page. Online demo available.

This article discusses the anatomy of a JSP page. Discusses all the directives, scripting elements, actions and JSP tags which form part of the JSP page. This article provides good foundation for studying advanced JSP topics.

An article on updating records in the database using JDBC with Java Servlets. Every step from establishing a Connection to executing the UPDATE query is explained in detail. Online demo available.

An article on inserting records into the database with Java Servlets. Every step from establishing a Connection to executing the INSERT SQL query is explained in detail. Online demo available.

An article on displaying records from the database with Java Servlets. Every step from establishing a Connection to iterating through ResultSet is explained in detail.

This article describes how to forward response from one Servlet to another and how to include response from the other Servlet. Discusses RequestDispatcher interface. Online demo available.

One of the most exciting features of the new Java Servlet 2.3 specification is filtering. At first sight, Servlet 2.3 filtering is deceptively similar to existing legacy filters in Apache, IIS, Netscape Web servers and others. In reality, Servlet 2.3 filtering is a completely different design architecturally -- leveraging the object-oriented nature of the Java platform to provide a new level of performance. This article introduces you to filtering in Tomcat 4 and shows you how to make productive use of filters in your projects.