preface
i recently had to learn java very quickly - you guessed it - because i needed to get a job as an entry level developer. since i could not find good enough resources on the web, i decided to record all the steps i went through here.
hopefully you find it useful. the book is organized by hours, hence the name 'java in 21 hours'. there was a book called 'java in 21 days' but that was a little too slow given my situation so here it comes