Why there are not any java web hosts seen
I first stumbled across this problem when, I thought to create my first website using java language, I was newbie in maintaining a server that will host my java apps. I decided lets have some already running server and I will drop my apps to test them on. This way I will be able to focus on application development. My wonder there were no java server available anywhere on the web and some from past were dead. Now I understand this. Basically I was expecting something like PHP/MySQL or Windows hosting some parallel idea for java.
Any dedicated hosting will not sell or Brandise themselves as java host as it is up to the administrator of server what to do with a bare bone linux install. He can install Apache server then add PHP or if wishes he can add TomCat server used for running java apps, of course a Java virtual machine will always be required.
Now I figured this that maintaining application in java server is not so straightforward like PHP or ASP. When you create a java program you will have to deploy them into webapp directory and restart the TomCat container. this indicate that there can be only one user for that instance of server hence no question of shared java server. Because allowing server to be restarted by its users will affect other users.