zerocool questions

zerocool answers

• Failed to create sessionFactory object.org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect
• org.hibernate.hql.internal.ast.QuerySyntaxException: <table_name> is not mapped [from <table_name>]
• how does hashing in java works?
• Integer i=3 vs Integer i= new Integer (3) [duplicate]
• Data was not saved: object references an unsaved transient instance - save the transient instance before flushing [duplicate]
• Why java.util.List.clear() is an "optional operation"? [duplicate]
• Difference between object and reference in java with code?