Adding new Database Drivers

Follow the steps:

1 - Download the jdbc Driver for your database
2 - copy the jdbc driver to the folder lib/
3 - Open the JasViewer.jar with a valid compressing program (such as 7-zip)
4 - Edit the file located at /META-INF/manifest.fm (example bellow)

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Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.1
Created-By: 20.1-b02 (Sun Microsystems Inc.)
Main-Class: jasviewer.Main
Class-Path: lib/jasperreports-applet-4.0.2.jar lib/jasperreports-fonts-4.0.2.jar lib/jasperreports-javaflow-4.0.2.jar lib/ant-1.7.1.jar lib/antlr-2.7.5.jar lib/barbecue-1.5-beta1.jar lib/barcode4j-2.0.jar lib/batik-anim.jar lib/batik-awt-util.jar lib/batik-bridge.jar lib/batik-css.jar lib/batik-dom.jar lib/batik-ext.jar lib/batik-gvt.jar lib/batik-parser.jar lib/batik-script.jar lib/batik-svg-dom.jar lib/batik-svggen.jar lib/batik-util.jar lib/batik-xml.jar lib/bcel-5.2.jar lib/bsh-2.0b4.jar lib/commons-beanutils-1.8.0.jar lib/commons-collections-2.1.1.jar lib/commons-digester-1.7.jar lib/commons-javaflow-20060411.jar lib/commons-logging-1.0.4.jar lib/groovy-all-1.7.5.jar lib/hibernate3.jar lib/hsqldb-1.8.0-10.jar lib/iText-2.1.7.jar lib/jaxen-1.1.1.jar lib/jcommon-1.0.15.jar lib/jdt-compiler-3.1.1.jar lib/jfreechart-1.0.12.jar lib/jpa.jar lib/jxl-2.6.10.jar lib/log4j-1.2.15.jar lib/mondrian-3.1.1.12687.jar lib/png-encoder-1.5.jar lib/poi-3.6.jar lib/rhino-1.7R1.jar lib/saaj-api-1.3.jar lib/serializer.jar lib/servlet.jar lib/spring-beans-2.5.5.jar lib/spring-core-2.5.5.jar lib/xalan-2.7.1.jar lib/xercesImpl-2.7.0.jar lib/xml-apis-ext.jar lib/xml-apis.jar lib/AbsoluteLayout.jar lib/jcalendar-1.3.3.jar lib/sqlitejdbc-v056.jar lib/postgresql-8.2-507.jdbc4.jar
X-COMMENT: Main-Class will be added automatically by build

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5 - add your jdbc driver (jar file) at the end of Class-Path.