Joop Eggen questions

Joop Eggen answers

• Is it safe to use AtomicBoolean for database locking in Scala/Java?
• Java getMethod "class not found"
• Extra button keeps appearing
• Are static utility methods not pure Object Oriented Programming? [closed]
• updates a jtextarea every key input
• How to get Java Resource file into byte[]?
• Design Pattern question: removing overuse of boolean function parameters
• final Entity with try catch in Java
• replacing \n in a String
• Get values from HashMap as reference