Which Java is Eclipse using?

Question

I downloaded 'Eclipse IDE for Java EE Developers' for Linux from eclipse.org. I am able to write, compile and run Java programs. But I don't understand what JDK / JRE is being used.

If I start a new 'Java Project' I can choose which JRE to use, but if I choose for instance 'JavaSE-1.6' I still don't know what that is? Oracle? IBM? And I don't know where that JRE is in my file system.

Let's say I want to use that same JRE to execute my Java program from command line, how do I find the 'java' executable?

Answer 1

While you are in Eclipse:

• Open Help -> About Eclipse
• click on Installation Details
• select the Tab Configuration

search for the entry

eclipse.vm=

there should be the path to the used JRE.