I tried to run \"eclipse-jee-juno-win32-x86_64\" , but it raised the following error \" java runtime environment JRE or java development kit must be availab
\"eclipse-jee-juno-win32-x86_64\"
I faced this issue and it get resolved by following steps.
Delete non existing JRE path from this file as mention in below
-vm C:/Program Files/Java/jre1.8.0_181/bin
Save this file and run eclipse again.