I am building a Java Selenium standalone application using Java11 in Eclipse 2018-12 but my builds fail:
java.lang.module.FindException: Unable to der
see here https://github.com/SeleniumHQ/selenium/wiki/Building-WebDriver
The Java JDK 8 (note that versions 9 & 10 are not currently supported for building Selenium). Download it from Oracle's site if it's not already on your computer.