i need help this is a re-ocurring problem with java

ok so i the otherday i was trying to make a lineage server with batch file, everything was good till i actially clicked the file. it said "'java' is not recognized as an internal or external command. operable program or batch file. press any key to continue"

now i try playing runescape again after i download the silab client, picking your server cause it looks like lots of fun and very stable and i cant run it i get the same message when i try to run it and i cant run it off of site either, cant any1 help me?

delete all files u put into ur java/bin file... then corect the directory.

yeah so i opened my java folder and theres nothing in it but yet i have all the updates and everything... i dunno wdf is wrong with it

delete them all then download the latest... this way it should auto do the directory for it.

it says unexpected server responce

same here