A frequently asked question in a Java interview is: How to implement a Java HashMap? Java job seekers must fully grok this important concept if they want to ace the interview. The HashMap tutorial ...

While the Hashtable was part of the initial Java release over two decades ago, the HashMap is the correct key-value store to use today. One key HashMap vs. Hashtable difference is the fact that the ...

However, since all events are extended from ManagerEvent, which contains the Integer line property, I'm facing the mapping issue, because the OutboundRegistrationDetail event contains line property ...