Railway reservation program

//Code :

import javax.swing.JOptionPane;
import javax.swing.JTextArea;

public class Reservation1
{

public static int smoking[]=new int[5];
public static int nons[]=new int[5];
public static void main(String args[])
{
String output="Enter 1 for smoking
"+
"Enter 2 for nons
Enter 3 for seats info
"+
"Enter 4 for Exit";
JOptionPane.showMessageDialog(null,output,"Reservation
System",JOptionPane.INFORMATION_MESSAGE);
String ch=JOptionPane.showInputDialog("Enter a choice");
int choice=Integer.parseInt(ch);
int i=0,j=0;
while(choice !=4)
{
switch(choice)
{

case 1:
if(i>4 ){
JOptionPane.showMessageDialog(null,"All seats are book in
smoking
section
"+
" Do u want a seat in nons");


break;}
smoking(i);
i++;
break;
case 2:
if(j>4){
JOptionPane.showMessageDialog(null,"All seats are book in
nonsmoking section
"+
"Do u want a seat in smoking");
break;}

nons(j);
j++;
break;
case 3:
status();
break;
default:

JOptionPane.showMessageDialog(null,"You enter awrong
choice
"+"enter
again");

}
ch=JOptionPane.showInputDialog("Enter a choice");
choice=Integer.parseInt(ch);
}
System.exit(0);
}
public static void smoking(int x)
{
/* if(x>4){

break;
}*/

String name=JOptionPane.showInputDialog("Enter pas name");

smoking[x]=1;
String output="passenger name--"+name+
"
seat no--"+x+"
Smoking section";

JOptionPane.showMessageDialog(null,output,"Boarding
Pass",JOptionPane.INFORMATION_MESSAGE);

}
public static void nons(int y)
{
String name=JOptionPane.showInputDialog("Enter pas name");

nons[y]=1;
String output="passenger name--"+name+
"
seat no--"+y+"
NonSmoking section";

JOptionPane.showMessageDialog(null,output,"Boarding
Pass",JOptionPane.INFORMATION_MESSAGE);
}
public static void status()
{
int t;
JTextArea outputArea=new JTextArea(20,30);
outputArea.append("Smoking nonSmoking
");
for( t=0;t<5;t++)
outputArea.append(smoking[t]+" "+nons[t]+"
");
JOptionPane.showMessageDialog(null,outputArea,"seat
info",JOptionPane.INFORMATION_MESSAGE);


}

}