Welcome to Motherboards.org!
There is indeed a difference in Java and JSP! Java is a program from http://www.java.com/en/
that enables certain screen graphics and text to be viewed. Similar to Adobe Flash.. http://www.adobe.com/
Good to have both programs. The other entity, is of course, a hosting Web site.
F@H.. to solve mankind's maladies.. in our lifetimes!