Rollerball questions

• Casting an int into a long
• Hibernate: MethodConstraintViolation is deprecated
• Java Transfer Object, what is it?
• ArrayDeque and LinkedBlockingDeque
• Java meaning of .java~
• About the HashMap, rehashing
• Optional method in Collection interface [duplicate]
• Inheritance instance variables with Java
• Where can I find the list of attributes name?
• How can I get a RejectedExecutionException

Rollerball answers