How to check for the JRE version in eclipse?

Question

How to check which version of JRE the eclipse is using ?

This section :

Window--->Preferences--->Java

shows by the name of JDK :

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Answer 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.