12. Exceptions

We can catch exceptions with a try { } catch (ExceptionName e) { }; block. You can add multiple catch blocks to handle different exceptions. The generic catch (Exception e) catches all.

Checked

A checked Exception extends only Exception!

Checked exceptions have to be either handled or announced using the throws keyword as they should be recoverable:

public void throwsStuff() throws CheckedException {
	throws CheckedException(); // Allowed
}
public void throwsStuff() {
	try {
		throwsStuff();
	} catch (Exception e) { }; // Allowed
}

Unchecked

An unchecked Exception extends RuntimeException and does not need to by caught, nor announced with throws. (But you can catch them)