TheConstructor questions

TheConstructor answers

• JavaMail - How to set SMTP “RCPT TO:” that will not match “To:” Header in DATA
• Mysql datetime becomes 0000-00-00 00:00:00 in mysql version 5.6
• java -version and javac -version showing different versions
• How to manually render Spring MVC view to html?
• Is there a benefit for a List<? extends MyObject>?
• How-to provide a ThreadLocal to CompletableFutures?
• How to find the insertion point in an array using binary search?
• What to return when generic methods returns 'nothing' but null can't be returned?
• Using an event listener as Java 8 Stream source
• ERROR 1048 (23000) Column cannot be NULL, however I am inserting valid data