Hi Prasad,
Threads:
There were 7 questions on threads. Four of them were tough with a lot of code. It took at least 10 minutes to tick an answer. Rests of three questions were easy. You should know more than the basic concepts of threads. Maha Anna's
thread's discussion will help a lot in under standing and answering the questions. On threads I got 57%
AWT,I/O, Events:
6 on I/O , 2 On AWT and 4 on events. All these questions are not code related. If you know the answer you can save much of time. I scored 100% in the all above topics. On I/O basically you have to through with all constructors concepts. In I/O you should ask following questions yourself
1. How to open a file in different modes. read, read write for random access. There is no write mode in the random access file. You should also know how to open a fine in append mode in the input/output streams. Please write sample programs on all kind of I/o and play with them. Atleast spend 3 to 4 days on I/O.
2. You should know basic methods of I/O. Readers, writer and inputstreamwrite and outputstreamwrite are most important constructors. At least you will get one question on InputStreamWriter or InputStreamReader. Please know the importance of these constructors and do write some sample programs.
3. You should know basic methods of Events and their significance. Most importantly concentrate on what parameters each method takes and what type it returns.
Strings/utility packages:
There are simple questions on these topics. Once again these question are simple. You can answer just like that. You should know all Math methods; significance of collection interfaces basic concepts on
string immutability. On these topics you will get about 10 questions.
Overloading, Overriding:
These are questions where you should read the code and answer. You should little bit careful in reading the code. So these questions will average amount of time (90-sec. minimum). But these are not tough questions. I got about 5 questions.
Language fundamentals, flow control and exceptios:
You should able to put the correct answers by spending about 90 sec. on each question. Some times it may take more time. But if you concentrate you should able to answer correctly.
I hope this will help you in your prep.
Good luck,
Regards,
Srikanth