Limbo Exile questions

• Are JPA entities that are not in use garbage collected and why?
• ProcessBuilder cannot find the specified file while Process can
• How to gracefully shutdown a Java application that is terminated as a result of closing the command line from which it was executed?
• Validator that must accept only specific numeric values
• Cannot find a JSP variable in debug mode
• Getting "411 Length Required" after a PUT request from HTTP Client
• No completions available, strange Eclipse behavior

Limbo Exile answers