Exceptions - Java Software Solutions: Foundations of Program Design - page 541

If an exception is thrown at any point during the execution of
the try block, control is immediately transferred to the appropri-
ate catch handler if it is present. That is, control transfers to the
first catch clause whose exception class corresponds to the excep-
tion that was thrown. After executing the statements in the catch
clause, control transfers to the statement after the entire try-catch
statement.
Let's look at an example. Suppose a hypothetical company uses codes to rep-
resent its various products. A product code includes, among other information, a
character in the tenth position that represents the zone from which that product
was made, and a four-digit integer in positions 4 through 7 that represents the
district in which it will be sold. Due to some reorganization, products from zone
R are banned from being sold in districts with a designation of 2000 or higher.
The program shown in Listing 11.2 reads product codes from the user and counts
the number of banned codes entered.

KEY CONCEPT
Each catch clause handles a particu-
lar kind of exception that may be
thrown within the try block.

Try Statement

try Block catch ( Type Identifier ) Block

finally

Block

A try statement contains a block of code followed by one or more catch
clauses. If an exception occurs in the try block, the code of the cor-
responding catch clause is executed. The finally clause, if present, is
executed no matter how the try block is exited.
Example:
try
{
System.out.println (Integer.parseInt(numString));
}
catch (NumberFormatException exception)
{
System.out.println ("Caught an exception.");
}
finally
{
System.out.println ("Done.");
}