I would suggest you to start studying on your own before jumping into it. You need to at least have basic ideas about what it is and if that is for you. I have seen many friends of mine telling its not for them after few weeks of studying. Consultancy ko padhai ko bhar ma java developer bhayera kaam tikauna ali garho nai parchha hola. You have to be lucky as well as extremely hard working.
Look at some courses in coursera. Youtube chanbnel thenewboston has pretty good lessons.
Start from HTML/CSS, javascript. Have a basic idea and then move to Java. ani Java ko pani basic knowledge bhaye pachhi you can move up to object oriented programming.