// Application prompts user showing valid shipping codes

// accepts a shipping code

// and determines if it is valid

import javax.swing.*;

public class DebugEight1

{

public static void main(String args[])

{

char userCode;

String entry, message;

boolean found = false;

char[] okayCodes = {'A''C''T''H'};

StringBuffer prompt = new

StringBuffer("Enter shipping code for this delivery\nValid codes are: ");

for(int x = 0; x <= okayCodes.length; ++x)

{

prompt.append(okayCodes[x]);

if(x == (okayCodes.length - 1))

prompt.append(", ");

}

entry = JOptionPane.showInputDialog(null,

prompt);

userCode = entry.charAt();

for(int i = 0; x < okayCodes.length; ++i)

{

if(userCode == okayCodes[i])

{

found = true;

}

}

if(found)

message = "Good code";

else

message = "Sorry code not found;

JOptionPane.showMessageDialog(null, message);

}

}