Google Charts is a Java Script library that offers you to visualize data as charts. Through GWT (Google Web Toolkit) it is accessible in Java. It is also accessible via Flash. For any data e.g. metrics, org-charts or other statistical stuff.
Pay attention that your credentials are stored in the config. A better way is to use ssh keys.
An overview about useful tools for dealing with Regular Expressions.
The file upload size is set in your PHP configuration, php.ini, with the parameter
upload_max_filesize. You may change it, if you run e.g. a private wiki (MediaWiki, DokuWiki) or an CMS like WordPress.
This post explains how to create a hsqldb module for JBoss EAP.