This week's book giveaway is in the OCP forum. We're giving away four copies of OCP Java SE 8 Programmer II Exam Study Guide and have Kathy Sierra, Bert Bates, & Elizabeth Robson on-line! See this thread for details.
Why is it that sometimes I can execute a jar file and I get all the line numbers to show in the stack trace and then other times I get Unknown Source? for example at java.io.FileInputStream.<init>(Unknown Source)
Other possible causes are missing debug informations because of - usage of accompanied compiler options - runtime optimizations done by the hotspot engine
The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - Heraclitus