我有一个不工作的 POS 程序，它说switch(food) unreachable 语句
import javax.swing.*;
import java.awt.*;
public class sari{
public static void One()
{
int choice=0,food=0,c=0,con,x=1,y=1,z=1,q=1,trans=0,price=0 ,qty,gtotal=0,ptotal=0,pay,change,total=0,ord;
String order="",bibilhin="",transaction="",A;
ImageIcon welcome = new ImageIcon("welcome.jpg");
ImageIcon chip = new ImageIcon("chip.jpg");
ImageIcon rc = new ImageIcon("rc.jpg");
ImageIcon stick = new ImageIcon("stick.jpg");
ImageIcon pancit = new ImageIcon("pancit.jpg");
ImageIcon jampong = new ImageIcon("jampong.jpg");
ImageIcon chups = new ImageIcon("chups.jpg");
ImageIcon egg = new ImageIcon("egg.jpg");
A=JOptionPane.showInputDialog("Enter your name:"); ImageIcon hansel = new ImageIcon("hansel.jpg");
JOptionPane.showMessageDialog(null,"Sir/Ma`am \n "+A+"\n Welcome\n to Mang Inasal\n Please Choose The\n product you want to buy","Welcome" ,JOptionPane.PLAIN_MESSAGE,welcome);
while(x==1)
{
c=Integer.parseInt(JOptionPane.showInputDialog(" Categories" + "\n" +"[1] Drinks" + "\n" + "[2] Foods"));
if(c==1)
{choice=Integer.parseInt(JOptionPane.showInputDialog("DRINKS" +"\n"
+ "[1] Lemonade" + "\n"
+ "[2] Coca Cola" + "\n"
+ "[3] Sprite" + "\n"
+ "[4] Mountain Dew" + "\n"
+ "[5] Pepsi" + "\n"
+ "[6] Cofee" +"\n"
+ "[7] Hot Choco" + "\n"
+ "[8] Nestie Iced Tea" +"\n"
+ "[9] Exit" +"\n"
+ "Enter Your Choice:"));
if(c==2)
food=Integer.parseInt(JOptionPane.showInputDialog("Food" +"\n"
+ "[1] L" + "\n"
+ "[2] Coca Cola" + "\n"
+ "[3] Sprite" + "\n"
+ "[4] Mountain Dew" + "\n"
+ "[5] Pepsi" + "\n"
+ "[6] Cofee" +"\n"
+ "[7] Hot Choco" + "\n"
+ "[8] Nestie Iced Tea" +"\n"
+ "[9] Exit" +"\n"
+ "Enter Your Choice:"));
}
switch(choice)
{
case 1:
price = 20;
bibilhin= " Lemonade";
break;
case 2:
price = 20;
bibilhin= "Coca Cola ";
break;
case 3:
price =820;
bibilhin = "Sprite";
break;
case 4:
price =205;
bibilhin= "Mountain dew";
break;
case 5:
price =20;
bibilhin= "Pepsi";
break;
case 6:
price =25;
bibilhin= "Cofee ";
break;
case 7:
price =25;
bibilhin= "Hot Choco";
break;
case 8:
price = 20;
bibilhin= "Nestie Ice tea";
break;
case 9:
JOptionPane.showMessageDialog(null,transaction+"Total sales: " + gtotal,"Transactions",JOptionPane.INFORMATION_MESSAGE);
JOptionPane.showMessageDialog(null,"You are about to exit!","Exit",JOptionPane.WARNING_MESSAGE);
do{
con=Integer.parseInt(JOptionPane.showInputDialog("Are you sure you want to exit?\n[1] Yes\n[0] No"));
if(con==1)
System.exit(0);
else if(con==1)
{
JOptionPane.showMessageDialog(null,"THANK YOU!\nGood Bye!","Exit",JOptionPane.ERROR_MESSAGE);
break;
}
else
{
JOptionPane.showMessageDialog(null,"Invalid Choice!","Error",JOptionPane.ERROR_MESSAGE);
con=1;
}
}while(con==1);
continue;
default:
JOptionPane.showMessageDialog(null,"Invalid Choice!","ERROR",JOptionPane.ERROR_MESSAGE);
}
do{//do1
qty = Integer.parseInt(JOptionPane.showInputDialog("Quantity:"));
if (qty>0)
break;
else
{
JOptionPane.showMessageDialog(null,"Invalid Input!","Error",JOptionPane.ERROR_MESSAGE);
continue;
}
}while(q==1);//end do1
total = price * qty;
ptotal = ptotal+total;
order = order +bibilhin+" "+qty+" "+price+"="+total+"\n";
do {//do2
con = Integer.parseInt(JOptionPane.showInputDialog("Continue?[1] yes [0] no"));
if(con==1)
{
break;
}
else if(con==0)
{
do{
pay = Integer.parseInt(JOptionPane.showInputDialog(order+"Total " +ptotal+"\nEnter Payment:"));
if(pay>=ptotal)
{
change = pay-ptotal;
JOptionPane.showMessageDialog(null," \t Mang Inasal"+
"\n\t 14 T molina st purok 6-B "+
"\n\t Alabang Muntinlupa City "+
"\nOperator: Micko Mendoza"+
"\n\t----------------------------------------------------------------"+
"\n\n\t "+order+"\nTotal "+ptotal+
"\nCash "+pay+
"\nChange "+change+
"\n----------------------------------------------------------------"+
"\n\n \t Thanks For buying!!!!!"+
"\n\t This Serve as an official reciept DTSN:41D983"+
"\n \t For Delivery Dial (519-6936)"+
"\n \t Feedbacks"+
"\n \t micko.mendoza@yahoo.com"
);
y=0;
z=0;
x=1;
gtotal = gtotal+ptotal;
trans++;
order="";
transaction = transaction+"Transaction "+ trans+ " "+ptotal+"\n";//No of transactions
ptotal = 0;
do{
con=Integer.parseInt(JOptionPane.showInputDialog("Next Customer?\n[1] Yes\n[0] No"));
if(con==1)
break;
else if(con==0)
{
JOptionPane.showMessageDialog(null,transaction+"Total sales: " + gtotal,"Transactions",JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
}
else
{
JOptionPane.showMessageDialog(null,"Invalid Choice!","Error",JOptionPane.ERROR_MESSAGE);
continue;
}
}while(con==1);
break;
}
else
{
JOptionPane.showMessageDialog(null,"Kulang pera mo");
continue;
}
}while(z==1);//do3
}
else
{
JOptionPane.showMessageDialog(null,"Intiger lang pwede","Continue",JOptionPane.ERROR_MESSAGE);
y=1;
continue;
}
} while(y==1);//do2
break;
switch(food)
{
case 11:
price = 20;
bibilhin= " Lemonade";
break;
case 12:
price = 20;
bibilhin= "Coca Cola ";
break;
case 13:
price =820;
bibilhin = "Sprite";
break;
case 14:
price =205;
bibilhin= "Mountain dew";
break;
case 15:
price =20;
bibilhin= "Pepsi";
break;
case 16:
price =25;
bibilhin= "Cofee ";
break;
case 17:
price =25;
bibilhin= "Hot Choco";
break;
case 18:
price = 20;
bibilhin= "Nestie Ice tea";
break;
case 19:
JOptionPane.showMessageDialog(null,transaction+"Total sales: " + gtotal,"Transactions",JOptionPane.INFORMATION_MESSAGE);
JOptionPane.showMessageDialog(null,"You are about to exit!","Exit",JOptionPane.WARNING_MESSAGE);
do{
con=Integer.parseInt(JOptionPane.showInputDialog("Are you sure you want to exit?\n[1] Yes\n[0] No"));
if(con==1)
System.exit(0);
else if(con==1)
{
JOptionPane.showMessageDialog(null,"THANK YOU!\nGood Bye!","Exit",JOptionPane.ERROR_MESSAGE);
break;
}
else
{
JOptionPane.showMessageDialog(null,"Invalid Choice!","Error",JOptionPane.ERROR_MESSAGE);
con=1;
}
}while(con==1);
continue;
default:
JOptionPane.showMessageDialog(null,"Invalid Choice!","ERROR",JOptionPane.ERROR_MESSAGE);
}
do{//do1
qty = Integer.parseInt(JOptionPane.showInputDialog("Quantity:"));
if (qty>0)
break;
else
{
JOptionPane.showMessageDialog(null,"Invalid Input!","Error",JOptionPane.ERROR_MESSAGE);
continue;
}
}while(q==1);//end do1
total = price * qty;
ptotal = ptotal+total;
order = order +bibilhin+" "+qty+" "+price+"="+total+"\n";
do {//do2
con = Integer.parseInt(JOptionPane.showInputDialog("Continue?[1] yes [0] no"));
if(con==1)
{
break;
}
else if(con==0)
{
do{
pay = Integer.parseInt(JOptionPane.showInputDialog(order+"Total " +ptotal+"\nEnter Payment:"));
if(pay>=ptotal)
{
change = pay-ptotal;
JOptionPane.showMessageDialog(null," \t Mang Inasal"+
"\n\t 14 T molina st purok 6-B "+
"\n\t Alabang Muntinlupa City "+
"\nOperator: Micko Mendoza"+
"\n\t----------------------------------------------------------------"+
"\n\n\t "+order+"\nTotal "+ptotal+
"\nCash "+pay+
"\nChange "+change+
"\n----------------------------------------------------------------"+
"\n\n \t Thanks For buying!!!!!"+
"\n\t This Serve as an official reciept DTSN:41D983"+
"\n \t For Delivery Dial (519-6936)"+
"\n \t Feedbacks"+
"\n \t micko.mendoza@yahoo.com"
);
y=0;
z=0;
x=1;
gtotal = gtotal+ptotal;
trans++;
order="";
transaction = transaction+"Transaction "+ trans+ " "+ptotal+"\n";//No of transactions
ptotal = 0;
do{
con=Integer.parseInt(JOptionPane.showInputDialog("Next Customer?\n[1] Yes\n[0] No"));
if(con==1)
break;
else if(con==0)
{
JOptionPane.showMessageDialog(null,transaction+"Total sales: " + gtotal,"Transactions",JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
}
else
{
JOptionPane.showMessageDialog(null,"Invalid Choice!","Error",JOptionPane.ERROR_MESSAGE);
continue;
}
}while(con==1);
break;
}
else
{
JOptionPane.showMessageDialog(null,"Kulang pera mo");
continue;
}
}while(z==1);//do3
}
else
{
JOptionPane.showMessageDialog(null,"Intiger lang pwede","Continue",JOptionPane.ERROR_MESSAGE);
y=1;
continue;
}
} while(y==1);//do2
continue;
}
}
}