A Random Tomcat Error

Java Open Source XChart Library

XChart features a dead-simple API for turning your data into beautiful charts including line, scatter, area, pie, donut, bubble, stick, bar, and histogram charts. Extra features include: real-time, themes, CSV import and export, export as PNG, JPG, BMP, GIF, SVG, EPS and PDF and much much more. For full description and examples visit the project on Github!

Here’s another nano-blog that will hopefully help someone solve a Tomcat error that I was dealing with today:

java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addServlet

The problem was that I was deploying catalina.jar within my .war file. Once I fixed up my build file to not include the catalina.jar file in the .war file, the error went away.

A Plethora of Sample Java Webapps that Run in Tomcat

Hello Web Apps (see the Hello* repos) is a collection of fully-functional example J2EE/JEE web applications that each demonstrate a specific concept or technology related to Java, J2EE/JEE, Servlets, JSPs, and/or several open source Java libraries. Building off of the simplest barebones HelloWebApp, each example web application can be downloaded and deployed to a web container running on your local machine. Concepts demonstrated include: integrating CSS, Javascript, a favicon, HTML image, AJAX, reverse AJAX, XChart charts, Flot Javascript charts, Quartz scheduler, and Sundial scheduler.