问题
How to check which version of JRE the eclipse is using ?
This section :
Window--->Preferences--->Java
shows by the name of JDK :
回答1:
Open the About Eclipse dialog (Help -> About Eclipse on Windows, Eclipse -> About Eclipse on OS X)
Click "Installation Details", choose the Configuration tab, and scroll down to the "java.home" entry. The value is the path name to the JVM used.
回答2:
To see which Java Eclipse itself is using go to Help > About Eclipse click Installation Details and look at the Configuration tab.
When you run Java programs from Eclipse you can select which Java is used. Preferences > Installed JREs lists the JREs (and JDKs) that Eclipse knows about. The Run Configuration for the program shows which Java is used to run the program.
回答3:
Please see the following figure.
回答4:
Goto Window->Preference->Installed JRES
or Goto Project , right click Preference -> Jva Build Path -> libraries
来源：https://stackoverflow.com/questions/22385457/how-to-check-for-the-jre-version-in-eclipse