New Scripts | Java | Tutorials & Tips

After describing some basic programming of servlets, we will describe some advanced topics of servlets in this tutorial, viz., Session Tracking, Servlet Filters, Servlet Life Cycle Events, Including, forwarding and redirecting, Servlet Chaining and Applet Servlet Communication.

Java Server Pages (JSP) is a Java API in J2EE which allows dynamic creation of web pages using Java. It has the same purpose as other existing technologies like CGI or PHP. In this tutorial you will learn about Lifecycle of JSP pages, Dynamic content generation, Invoking Java code using JSP scripting elements, JavaBeans for JSP and Error Handling.

There are names in the English language like Sam O'Neil, Jenny McCarthy, Beverly d'Angelo, Leonardo di Caprio, Don Alejandro de la Vega, Wernher von Braun, etc. that give us trouble when we try to properly capitalize them in software applications. I provide a customizable and extendable solution to this problem. I had looked through many documents on the net concerning capitalization in English and also spoke to some people that are supposed to know things like this. Then I've written some code that puts all this theory into Java.

This can come in very handy, if you need to compare 2 different projects or envs. For example Development server against prod, to ensure they both have same certs stored in cacerts (sampled by java among others). Code to generate list of certs, along with there alias, entry, owner and valid dates is supplied at the URL.

Easy to follow, visual presentation of many of the concepts you need to start programming in java such as fundamentals, syntax, basic packages, GUI with AWT/Swing/2Dapi, threads and networking. Includes example source code, quizzes and exercises.

Java Server Pages (JSP) could handle any erros that might be arised in scriptlets, expressions, or other JSP elements. You could use try/cacth blocks to handle any known erros. In this technic we could use to display a custom error on our file where unhandled exception is thrown.

This sample of JSP file, first handles all posted data from a web form and write to a text file. We have used Tomcat Server to run our sample code. You could easily edit the source code to use in your application.

You can put client's browser a cookie in JSP easily. Following example displays how to create cookie and set target browser.

Before to start to examine this sample code, you need a SMTP server. If you know your mail server name you could easily use this sample code in a real website. We will use JavaMAIL API. You must put j2ee.jar under WEB-INF/lib folder in your web work folder. Our testing system is Red Hat Linux with Tomcat 5.

Session are very helpful to associate some data with each visitor. You may pass and retrieve values in diffrent page using sessions. All sessions are an object associated with each web client. In this sample code we will create a session named `username` and later put a value inside our new Session object. On next step we will get our session value. .

Creating a basic Java game using JPanel.

Creating a basic game in JPanel.

Basic 'Hello World' tutorial in Java

A thread, by definition is a light weight process. They are used to increase functionality and performance by performing multiple tasks at the same time, i.e. concurrently...

Do you want to add sound to your JAVA application? It's so incredibly easy!

It is a simple demonstration of Linked list in java programming language. Very simple and well commented java source code for the beginners. Linked list of points are used to create a Polyline and display it.

This is a small Console Based Java Calculator that can add, subtract , divide and multiply two numbers. Find the square root of a number, cube of a number, nth Power of a number. It is very for the begnners of Java....

Demonstration of the try catch finally exception handling mechanism in java programming language.

A simple Drawing Pad on which the user can draw some lines and shapes by using the mouse.

A guide to calling native methods from with in java applets. Explains how to overcome the sandbox restrictions and how to load native libraries when the applet starts. Also includes a brief introduction to the JNI.