How to get Epic ID, Planned for, Modified date of an WorkItem programmtically using RTC Java API

Please see https://rsjazz.wordpress.com/2013/03/20/understanding-and-using-the-rtc-java-client-api/ to get started and for the most basic examples you nee.

Please see https://rsjazz.wordpress.com/2015/02/27/a-rtc-workitem-command-line-version-2-2/ for an almost complete example for what you can do reading and writing the Work Item API.

The workItem ID is a method of the IWorkItem interface: workItem.getId()
Modified date the same  workItem.modified()
Planned for is an attribute - see the first post and https://rsjazz.wordpress.com/2013/01/02/working-with-work-item-attributes/
workItem.getValue(IAttribute ot the attribute).

Thanks Ralph.