How to make web applications in JAVA

Hi!
Iam an experienced Web Programmer in languages like PHP,CGI,ASP but i haven't drunk my first cup of JAVA yet. My idea is to start making web applications in JAVA as soon as possible. But the first challenge i am facing is of choosing from things like J2SE,J2EE,J2ME. I just bought a book 'JAVA : The complete reference(J2SE 5.0)' by Herbert Schildt. It has a only a small percentage of text that looks like 'Web Programming' in the chapter 'java Servlets'. So now I think its J2EE that has all the web programming stuff. So basically iam confused and can't figure out what to read! So can anybody please tell me that what learning curve do i have to take to start java web programming? Remember, i hardly have any Java specific knowledge. But iam adept at OOPS programming(thanks to PHP).Do i have to learn that whole J2SE book if j2EE is what i need?And i don't really bother about syntax of JAVA language coz i have worked on C as well. Infact, PHP is much like C as well.
Thanks for any Help

I will once again clarify what i am sayin to avoid any confusion...
PHP is an object oriented server side scripting language.
PHP has its own semantics and OOPS defination. unlike ASP it is not dependent on other languages to execute the logic of script.
PHP has it's own PARSER. The function list of PHP is also impressive. The OOPS are pretty strong, some things are missing like Function overloading etc.
But PHP 5 has them too. (I use PHP 4.3.8). PHP runs on APACHE server or IIS with APACHE 2.0 PATCH. OOPS of PHP is very similar to JAVA(PHP also has $this-> operator). The main diffrence between PHP and JAVA or C/C++ is that variables are defined with $ sign.Actually they are never defined , they are created on fly. Array traverse functions of PHP make functions of other languages look primitive.
You can go to http://php.net and make a search on available functions and features of PHP in the online manual.
thanx.

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