Patty's Party Planning Service wants you to create a JPartyPlanner applet that lets...

Patty's Party Planning Service wants you to create a JPartyPlanner applet that lets a user estimate the cost of a party. The service uses a sliding fee scale so that the per-guest cost decreases as the total number of invited guests increases. Table 17-2 shows the fee structure.

The applet lets the user enter the number of anticipated guests. The user can click either of two JButtons: one to display the fee per person and another to display the fee for the party (the cost per person times the number of guests). The user can continue to request fees for a different number of pests and view the results for any length of time before making another request or leaving the page. When the user leaves the page, erase the last number of requested guests and ensure that the next user starts fresh with a blank JTextField that holds the number of guests. Save the file as JPartyPlanner.java.