Welcome to JavaRanch Ronald. You may not have noticed, the link is rather small, but we do have a search feature here. This question, as well as the struts question you asked have been addressed on numerous occasions. I'd recommend looking up those threads and see what's already been stated.
Thanks and hope to see you stick around.
I carry this gun in case a vending machine doesn't give me my fritos. This gun and this tiny ad:
Free, earth friendly heat - from the CodeRanch trailboss