import SimpleOutput;

/**
 * A simple test of exceptions.
 *
 * @author Samuel A. Rebelsky
 * @author Carl Caffeinated
 * @author Carla Caffeinated
 * @version 1.0 of May 2000
 */
public class Exceptional
{
    // +---------+---------------------------------------
    // | Methods |
    // +---------+

    /**
     * Call another method using an array of strings.
     * If that method throws an exception, we print a
     * nice little note.  If that method succeeds, we
     * throw an exception.
     */
    public static void antiExceptional(SimpleOutput out, 
                                          String[] stuff)
        throws Exception
    {
        try {
            sampleMethod(stuff);
            throw new Exception("That method succeded");
        }
        catch (Exception e) {
            out.println("Failed because: " + e.getMessage());
        }
    } // antiExceptional(SimpleOutput, String[])

    /**
     * Look at an array of strings.  
     * @exception Exception
     *    If the array is empty or contains an empty string.
     */
    public static void sampleMethod(String[] stuff) 
        throws Exception
    {
        if (stuff == null) {
            throw new Exception("Null array");
        }
        else if (stuff.length == 0) {
            throw new Exception("Empty array");
        }
        for (int i = 0; i < stuff.length; i++) {
            if (stuff[i].equals("")) {
                throw new Exception("Element " + i + " is empty");
            }
        } // for
    } // sampleMethod(String[])

    // +------+------------------------------------------
    // | Main |
    // +------+

    public static void main(String[] args) 
        throws Exception
    {
        antiExceptional(new SimpleOutput(), args);
    }
} // class Exceptional