Exceptions - Java Software Solutions: Foundations of Program Design - page 542

LISTING 11.2
//********************************************************************
// ProductCodes.java Author: Lewis/Loftus
//
// Demonstrates the use of a try-catch block.
//********************************************************************
import java.util.Scanner;
public class ProductCodes
{
//-----------------------------------------------------------------
// Counts the number of product codes that are entered with a
// zone of R and and district greater than 2000.
//-----------------------------------------------------------------
public static void main (String[] args)
{
String code;
char zone;
int district, valid = 0, banned = 0;
Scanner scan = new Scanner (System.in);
System.out.print ("Enter product code (XXX to quit): ");
code = scan.nextLine();
while (!code.equals ("XXX"))
{
try
{
zone = code.charAt(9);
district = Integer.parseInt(code.substring(3, 7));
valid++;
if (zone == 'R' && district > 2000)
banned++;
}
catch (StringIndexOutOfBoundsException exception)
{
System.out.println ("Improper code length: " + code);
}
catch (NumberFormatException exception)
{
System.out.println ("District is not numeric: " + code);
}