Please Help What's Wrong with my Codes!

Code Java:
import java.lang.*;
import java.io.*;
import javax.swing.*;
 
public class joy
{
public static void main(String[]args)throws IOException
{
BufferedReader bb= new BufferedReader(new InputStreamReader(System.in));
 
String go, fight, win, ha;
double pls, naman, run, ka;
 
 
System.out.println("\tA. Student Meal");
System.out.println("\tB. Employee Meal");
System.out.println("\tC. Party Order");
System.out.println("Choice:");
 
choice(char);
switch(choice)
{
 
case 'A':case 'a':
int choices1;
System.out.println("1. Ambula.........35.00p");
System.out.println("2. Order............45.00p"); System.out.println("3. Group Meal...150.00p"); ha=JOptionPane.showInputDialog(null, "Enter Your Order: "); choices1=Integer.parseInt(ha);
switch(choices1)
{
case 1:
fight= JOptionPane.showInputDialog(null, "Piece(s) of Order"); namanouble.parseDouble(fight);
pls=35*naman;
JOptionPane.showMessageDialog(null,"Total Charge: " +pls);
win= JOptionPane.showInputDialog(null, "Money Received"); runouble.parseDouble(win);
ka=run-pls;
JOptionPane.showMessageDialog(null,"Change: " +ka);
System.exit(0);
break;
 
 
case 2:
fight= JOptionPane.showInputDialog(null, "Piece(s) of Order"); namanouble.parseDouble(fight);
pls=45*hah;
JOptionPane.showMessageDialog(null,"Total Charge: " +pls);
win= JOptionPane.showInputDialog(null, "Money Received"); runouble.parseDouble(win);
ka=run-pls;
JOptionPane.showMessageDialog(null,"Change: " +ka);
System.exit(0);
break;
 
 
case 3:
fight= JOptionPane.showInputDialog(null, "Piece(s) of Order"); namanouble.parseDouble(fight);
pls=150*naman;
JOptionPane.showMessageDialog(null,"Total Charge: " +pls);
win= JOptionPane.showInputDialog(null, "Money Received"); runouble.parseDouble(win);
ka=run-pls;
JOptionPane.showMessageDialog(null,"Change: " +ka);
System.exit(0);
break;
}
case 'B':case 'b':
int choices2;
System.out.println("1. Order.............Php100.00"); System.out.println("2. Group Meal....Php200.00"); ha=JOptionPane.showInputDialog(null, "Enter Your Order: "); choices2=Integer.parseInt(ha);
switch(choices2)
{
case 1:
fight= JOptionPane.showInputDialog(null, "Piece(s) of Order"); namanouble.parseDouble(fight);
pls=100*naman;
JOptionPane.showMessageDialog(null,"Total Charge: " +pls);
win= JOptionPane.showInputDialog(null, "Money Received"); runouble.parseDouble(win);
ka=run-pls;
JOptionPane.showMessageDialog(null,"Change: " +ka);
System.exit(0);
break;
 
 
case 2:
fight= JOptionPane.showInputDialog(null, "Piece(s) of Order"); hahouble.parseDouble(fight);
pls=200*naman;
JOptionPane.showMessageDialog(null,"Total Charge: " +pls);
win= JOptionPane.showInputDialog(null, "Money Received"); helpouble.parseDouble(win);
ka=run-pls;
JOptionPane.showMessageDialog(null,"Change: " +ka);
System.exit(0);
break;
}
 
 
case 'C':case 'c':
int choices3;
System.out.println("1. Buffet.............Php1500.00"); System.out.println("2. Bucket Meal....Php700.00"); ha=JOptionPane.showInputDialog(null, "Enter Your Order: "); choices3=Integer.parseInt(ha);
switch(choices3)
{
case 1:
fight= JOptionPane.showInputDialog(null, "Piece(s) of Order"); hahouble.parseDouble(fight);
pls=1500*naman;
JOptionPane.showMessageDialog(null,"Total Charge: " +pls);
win= JOptionPane.showInputDialog(null, "Money Received"); helpouble.parseDouble(win);
ka=run-pls;
JOptionPane.showMessageDialog(null,"Change: " +ka);
System.exit(0);
break;
 
 
case 2:
fight= JOptionPane.showInputDialog(null, "Piece(s) of Order"); hahouble.parseDouble(fight);
pls=700*naman;
JOptionPane.showMessageDialog(null,"Total Charge: " +pls);
win= JOptionPane.showInputDialog(null, "Money Received"); helpouble.parseDouble(win);
ka=run-pls;
JOptionPane.showMessageDialog(null,"Change: " +ka);
System.exit(0);
break;
}
 
 
}
{
Default:System.out.println("\tInvalid Input");
System.exit(0);
 
 
}
 
 
 
}
}