Here are step to do some troubleshooting with java logs file
1. Read the updated line of log file... or may be u shld use tail -f
2. Understand the error log and try remember the past troubleshooting solution. The error log give same message for the same problem consistently. Then, u shld use same solution for same problem.
3. If u have superiors / seniors, better u ask them before u ask google. some how google could not understand ur queries but google is intelligent enough for u if u are also intelligent to ask a good query to google.
4. If u senior answer questions then, ask them the detail explaination.
5. If u senior could not answer ur questions , then u ask them for his resignation. hahahahahaha
fikir-fikirkan.. selamat beramal