What happens after throwing an exception?
If the exception is not handled at the higher level, the application crashes. The “finally” block execution stops at the point where the exception is thrown. Irrespective of whether there is an exception or not “finally” block is guaranteed to execute. Then the original exception that occurred in the try block is lost.
What happens if the finally block throws an exception?
The “finally” block execution stops at the point where the exception is thrown. Irrespective of whether there is an exception or not “finally” block is guaranteed to execute. Then the original exception that occurred in the try block is lost.
Which is better try catch or not to throw an exception?
While try –> catch will just let you ignore the error. The first one rethrows the exception up the stack and preserves the stack trace. The second one swallows (hides) the exception. The third one probably also swallows the exception but it depends on what (//Do something) does.
When is it reasonable to throw an exception in null?
In some situations in which people return null, the reasonable thing to do is to throw an exception. Think of it this way: if a method promises to perform something and fails to do so, it should throw. In other words: when a method fails to fulfill its contract, then it is reasonable to throw.
What happens when an exception is thrown in JavaScript?
In the first block, an exception is thrown again inside of the handler for the first block. That means that it can be picked up by an outer-try/catch scope block. The second block “eats” the exception in the catch block, and program execution can continue normally after the code in the catch block is executed.
Is it ever OK to have an empty catch statement?
EDITED TO ADD: suppose you are programming in a language where throwing exceptions is the normal way of controlling the program logic (one of alternatives to goto ). Then an empty catch block in a program written in this language is very much like an empty else block in a traditional language (or no else block at all).
https://www.youtube.com/watch?v=HLu_pccM6ig