public class VehicleApp $\{$

private static final DecimalFormat df$2=$ new DecimalFormat$("$#$.$##$")$;

$/**$

$*$ @param args the command line arguments

$*/$

public static void main$($String$[]$ args$)\{$

$//$ TODO code application logic here

String FName$="",$LName$="",$phoneNumber$=""$; $//$Variable Declaration

int numOfVehicles$=0,$numOfTanks$=0$;

$//$First name must be asked until is it blank

while$($FName$.$isEmpty$())\{$

FName$=$JOptionPane.showInputDialog$("$Enter first name"$)$;

$\}$

$//$Last Name must be asked until is it blank

while$($LName$.$isEmpty$())\{$

LName$=$JOptionPane.showInputDialog$("$Enter Last Name"$)$;

$\}$

$//$Phone number must be asked $10$ characters and can not be blank

while $($phoneNumber$.$length$()!=10||!$phoneNumber.matches$("\backslash \backslash$d$+"))\{$

phoneNumber$=$JOptionPane.showInputDialog$("$Enter Phone Number$(10$ Digits$)")$;

$\}$

$//$ Number of Vehicles must be between$1$ and $10$

while$($numOfVehicles$<mn>1</mn><mi>|</mi><mi>|</mi>$numOfVehicles$>10)\{$

try$\{$

String vehicles $=$ JOptionPane.showInputDialog$("$Enter number of vehicles $(1-10)")$;

numOfVehicles$=$Integer.parseInt$($vehicles$)$;

$\}$ catch $($NumberFormatException e$)\{$

JOptionPane.showMessageDialog$($null$,$"Please enter a valid number"$)$;

$\}$

$//$ Number of Tanks must be one of the specified values

try $\{$

while $(!($numOfTanks $==2||$ numOfTanks $==4||$ numOfTanks $==8||$ numOfTanks $==10||$ numOfTanks $==15||$ numOfTanks $==20))\{$

String tanks $=$ JOptionPane.showInputDialog$("$Enter number of tanks $(2,4,8,10,15,20)")$;

numOfTanks $=$ Integer.parseInt$($tanks$)$;

$\}$

$\}$ catch $($NumberFormatException e$)\{$

JOptionPane.showMessageDialog$($null$,$ "Please enter a valid number"$)$;

$\}$

$//$ Create VehicleFactory instance and display summary

VehicleFactory VF $=$ new VehicleFactory$($FName $+""+$ LName, phoneNumber, numOfVehicles, numOfTanks$)$;

JOptionPane.showMessageDialog$($null$,$ VF$.$getSummary$())$;

$\}$