Why r u doing the next version with investment feature in Java instead of PHP ?
Java is better language and gives us the same performance as an exchange.
I'm sorry to contradict U in this regard. Why r u saying that Java is better than PHP ? Does not it depend on the coder ? Otherwise, how Facebook is primarily running on PHP ? AFAIK tomcat is not good to support big traffic, U need to go for JBOSS.
Moreover, if someone buys your PHP script, it would be difficult for him/her to upgrade to the next version, if that's written in Java. Not only the Xamp settings need to be exported to Tomcat, but also DB connection etc. need to be changed.