title: Which JDK/JRE is a given Eclipse project using?
body: <p>I have a current version of Eclipse (4.5.2) and I've got several JDKs and JREs installed. How do I determine which specific JDK/JRE a given project is using? </p>
  
  <p>The reason I ask is that I'm trying to figure out which logging.properties file to edit to make my logging work the way I want it. </p>
  
  <p>I used -version as a VM argument in my project and it told me:
  java version "1.8.0_74"
  Java(TM) SE Runtime Environment (build 1.8.0_74-b02)
  Java HotSpot(TM) 64-Bit Server VM (build 25.74-b02, mixed mode)</p>
  
  <p>Unfortunately, I have both a JDK and a JRE at that level so I'm not sure which one it is using in this project. Can anyone enlighten me?</p>
  
  <p>The JRE system library in my project says [Java1.8SE] in Package Explorer but the individual jars in that library all look like this:
  rt.jar C:\Program Files\Java\jre7\lib 
  which suggests that I have a 1.7 jre. </p>
  
  <p>Can anyone shed some light on this?</p>