Question: how to tell if you are running jre or jdk?
Answer: Depending on the name and location of the used Java binary one can figure out if a JRE or a JDK is used: If the path contains “jre” (e.g. as in C:\Program Files\Java\jre6\bin\client\jvm. dll ) it is a JRE. If the path contains “jdk” (e.g. as in C:\Program Files\Java\jdk1.