posted 15 years ago
Welcome to JavaRanch.
How much time you need really depends on how well you know Java, how fast you study and other personal factors, so it is hard to tell exactly how much time you will need. The exam is not really easy however, and most people need at least a few weeks, upto a few months, to study for it. Have a look at the books available for the SCJP - the K&B book (SCJP Study Guide by Kathy Sierra and Bert Bates) for example is 850 pages thick. Can you estimate for yourself how long it would take you to meticulously read that book and learn what's in it in detail?