Why catch Exceptions in Java, when you can catch Throwables?

Question

We recently had a problem with a Java server application where the application was throwing Errors which were not caught because Error is a separate subclass of Throwable an

Answer 1

There is no point in catching Error.

Errors are used to indicate something went really wrong in your application and it should be restarted.

For instance one common error is

java.lang.OutOfMemoryError

There is NOTHING you can do when that happens. Is already too late, the JVM has exhausted all its options to get more memory but it is impossible.

See this other answer to understand more about the three kinds of exceptions.