rocketboy questions

rocketboy answers

• ".class" keyword in Java
• Threads not communicating
• get method of hashmap is not returning null
• java String constructor logic
• How to check if recursion or iteration is the best for a particular program? [duplicate]
• Iterating over sets of sets
• Can't find resource file after exporting to a runnable JAR
• Reassign variable in a List within for-loop
• IDE forces to surround with try/catch and not throw the exception
• Explicitly setting NULL value to an array element