Yes, Java is an object-oriented language (It has classes and objects), pascal never deals with classes or objects, once you learn pascal you'll have the basics and you can then learn everything that is specific to object oriented languages, it will certainly come easier to you.
In fact, there are a few object oriented pascal compilers, so you can transition from pascal to those and then to java.
EDIT: If you are going for pascal, I would suggest going for the freepascal dialect, mainly because it's the one I know, because it's easy, because it has an object pascal compiler and because it's what simba uses.