Selenium automates browsers

Selenium automates browsers. Control the browser through Java code:

http://docs.seleniumhq.org/

Setting Tomcat JVM in service mode

Running Tomcat (Service mode) with default Java Virtual Machine (JVM) could cause some strange problem sometimes. It's because your own development may depends on a particular VM (e.g. the HotSpot VM). In this case, you will need to specify the JVM instead of using the default one.

To do this, run the tomcat7w.exe in TOMCAT_HOME\bin\, and select the the Java tab. You will find the Java Virtual Machine option as shown below: