Catching an Exception
	• A catch block has access to the value of the exception, but cannot modify the original value. • This is true even if the operand is a reference. Any change to the operand does not affect the original value, only the temporary copy. • The type of a throw expression is void and has no residual value. • If we use throw within a try block without an operand, a catch block is not executed. Instead, terminate is called.