As you can see in the first class, I have added a comment ("// throw exception") where I would like to throw an exception. Do I have to define my own class for exceptions or is there some general exception class in Java I can use?
How can I throw a general exception in Java? - Stack Overflow
This throws the following exception: How can I catch it entirely or at least filter out the "A resource with the same name already exist."? Using $.Exception.GetType().FullName yields System.Net.WebException and $.Exception.Message gives The remote server returned an error: (400) Bad Request.
What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the progra...
I have some code and when it executes, it throws a NullReferenceException, saying: Object reference not set to an instance of an object. What does this mean, and what can I do to fix this error?
The one you linked to asks what's the difference between except Exception, e: and except Exception as e:. This question asks what the difference is between except: and except Exception as e:.
Explanation: the Scanner(File) constructor is declared as throwing the FileNotFoundException exception. (It happens the scanner it cannot open the file.) Now FileNotFoundException is a checked exception. That means that a method in which the exception may be thrown must either catch the exception or declare it in the throws clause. The above fix takes the latter approach.
2 Your exception says it all "Connection reset". The connection between your java process and the db server was lost, which could have happened for almost any reason (like network issues). The SQLRecoverableException just means that its recoverable, but the root cause is connection reset.