Eugine jar files in java can be thought of as dll files of C#. Its the library that you need to run Struts applications. You can download Struts from
here. You can download the struts-1.3.10-lib.zip archive. If you download struts-1.3.10-all.zip, then it contains a folder named apps, these are sample Struts applications. You'll need to put Struts jar files into the
WEB-INF/lib folder of your web application. I'm not really sure what are the minimum jar files required for Struts 1.x (not used Struts 1.x as its very old). But looking at the sample applications, it looks like you'll have to put these jar files into your
WEB-INF/lib folder
antlr-2.7.2.jar
commons-beanutils-1.7.0.jar
commons-chain-1.1.jar
commons-digester-1.8.jar
commons-logging-1.0.4.jar
commons-validator-1.3.1.jar
oro-2.0.8.jar
struts-core-1.3.10.jar
struts-taglib-1.3.10.jar
(The version of these jars may vary)