Throwing exceptions in Java

Question

I have a question about throwing exceptions in Java, a kind of misunderstanding from my side, as it seems, which I would like to clarify for myself.

I have been read

Answer 1

With the first way do you mean something like this:

try {
  ok = doSomething();
  if (!ok) {
   throw new Exception("Error");
  }
 ok = doSomethingElse();
}catch (Exception e) {
}

This will allow you to exit the try-catch block without executing the rest of it. This is the only valid usage I can think of throwing an exception with throw and catching it yourself in a try-catch block. However, standard if blocks should be used instead. I don't understand why someone should throw an exception and then catch it himself.

The second way is more standard, especially if the caller of the method that throws an exception is an external module. This is a way of signaling that something real wrong happened. It is the responsibility of the caller to handle the exception.