i wanted to write a invoicing program for my father's buisness.i am a
class X th student and know only the basics.so this is what i have
done.can u suggest a way to print the output from a printer
automatically in the same format with the tabs and spaces not
disappearing as in one of my programs.please help
package maskara1;
import java.io.*;
import java.util.Calendar;
public class BinodBrothers
{
static String nam,add,des,dest,ter;
static final int rate[]=
{3900,4195,185,285,410,729,1140,1712,3200,300,305,312,315,312,132};
static int sum=0,tsum=0,cod,inv;
static int qty[]= {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
static int amt[]= {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
static int stock[]=new int[15];
static int sale[]=new int[15];
static int msale[]=new int[15];
static String prod[]={"5.5mm Coil ","Tata Tiscon 6mm ","Tata
Tiscon 8mm ","Tata Tiscon 10mm ","Tata Tiscon 12mm ","Tata Tiscon
16mm ","Tata Tiscon 20mm ","Tata Tiscon 25mm ","Balmukund
","Balajee ","Lafarge Duraguard","Lafarge Concreto
","Ultratech ","Jaypee Buland ","Prince pipes "};
static BufferedReader br=new BufferedReader(new InputStreamReader
(System.in));
public static void menu()
{
System.out.println("n-Start Billing\nx-End of Day\nr-Change Rate\ns-
View Stock\nt-View sales\nm-View monthly Sales\np-Enter Purchase Stock
\nuView Current Rate");
System.out.println("1-5.5mm coil2-Tata Tiscon 6mm\n3-Tata Tiscon 8mm
\n4-Tata Tiscon 10mm\n5-Tata Tiscon 12mm\n6-Tata Tiscon 16mm\n7-Tata
Tiscon20mm\n8-Tata Tiscon 25mm\n9-Balmukund\n10-Balajee");
System.out.println("11-Lafarge Duraguard\n12-Lafarge Concreto\n13-
Ultratech\n14-Jaypee Buland\n15-Prince Pipes");
System.out.println("0-Stop");
}
public static void main(char ch)throws IOException
{
switch(ch)
{
case 'c':
cash();
break;
case 'n':
trigger();
bill();
break;
case 'r':
rate();
break;
case 's':
stock();
break;
case 't':
sales();
break;
case 'm':
month();
break;
case 'p':
purchase();
case 'u':
currentRate();
break;
case 'x':
end();
break;
default:
System.out.println("Invalid choice");
}
}
public static void cash()
{
System.out.println("Total amount of cash flow in the day: Rs."+tsum);
}
public static void stock()
{
for(int i=0;i<15;i++)
System.out.println(prod[i]+"\t"+stock[i]);
}
public static void sales()
{
for(int i=0;i<15;i++)
System.out.println(prod[i]+"\t"+sale[i]);
}
public static void month()
{
for(int i=0;i<15;i++)
System.out.println(prod[i]+"\t"+msale[i]);
}
public static void currentRate()
{
for(int i=0;i<15;i++)
System.out.println(prod[i]+"\t"+rate[i]);
}
public static void trigger()
{
sum=0;
for(int i=0;i<15;i++)
{
qty[i]=0;
amt[i]=0;
}
}
public static void calc()
{
for(int i=0;i<15;i++)
amt[i]=qty[i]*rate[i];
}
public static void bill() throws IOException
{
menu();
System.out.println("Billing");
System.out.println("Enter the invoice no:");
inv=Integer.parseInt(br.readLine());
System.out.println("Despatched through:");
des=br.readLine();
System.out.println("Terms of Delivery:");
ter=br.readLine();
System.out.println("Destination:");
dest=br.readLine();
System.out.println("Enter the name:");
nam=br.readLine();
System.out.println("Enter the address:");
add=br.readLine();
for(int i=0;i<15;i++)
{
System.out.println("Enter the product code:");
int co=Integer.parseInt(br.readLine());
if(co==0)
break;
System.out.println("Enter the quantity:");
qty[co-1]=Integer.parseInt(br.readLine());
}
calc();
FileWriter fw=new FileWriter("output bill.txt");
BufferedWriter bw=new BufferedWriter(fw);
PrintWriter outFile= new PrintWriter(bw);
int c=0;
String sub;
outFile.println("\t\t\t\t\t\t\t\t\t"+inv);
outFile.print("\n\t\t\t\t\t\t\t\t\t");
Calendar d=Calendar.getInstance();
outFile.println(d.get(Calendar.DATE)+"/"+d.get(Calendar.MONTH)
+"/"+d.get(Calendar.YEAR));
outFile.println("\n \n\t\t\t\t\t\t\t\t\t"+des+"\n \n\t\t\t\t\t\t\t\t
\t"+ter+"\n \n\t\t\t\t\t\t\t\t\t"+dest);
outFile.println("\n \n ");
outFile.println(nam+"\n"+add);
outFile.println("\n \n \n \n \n \n \n ");
for(int i=0;i<15;i++)
{
if(qty[i]!=0)
{
if(i==0 || i==7 || i==8 || i==9)
sub="kg ";
else if(i==10 || i==11 || i==12 ||i==13)
sub="bags ";
else
sub="pcs ";
if(qty[i]<10)
outFile.print(" ");
else if(qty[i]<100)
outFile.print(" ");
outFile.print("\t"+prod[i]+"\t "+qty[i]+" "+sub+"\t");
outFile.println("Rs."+rate[i]+"\t " +"Rs. "+amt[i]);
c++;
}
}
for(int i=c;i<15;i++)
outFile.println(" ");
int sum=0;
for(int i=0;i<15;i++)
sum+=amt[i];
outFile.print("\n\t\t\t\t\t\t\t\t\tRs."+sum);
outFile.close();
FileReader fl=new FileReader("output bill.txt");
BufferedReader flr=new BufferedReader(fl);
String text;
int i=0;
while((text=flr.readLine())!=null)
{
i++;
System.out.println(text);
}
flr.close();
update();
}
public static void rate()throws IOException
{
do
{
System.out.println("Enter the product code:");
cod=Integer.parseInt(br.readLine());
if(cod==0)
break;
System.out.println("Enter the new rate:");
rate[cod-1]=Integer.parseInt(br.readLine());
}
while(cod!=0);
}
public static void purchase()throws IOException
{
do
{
System.out.println("Enter the product code:");
cod=Integer.parseInt(br.readLine());
if(cod==0)
break;
System.out.println("Enter the quantity of purchase:");
int ch=Integer.parseInt(br.readLine());
stock[cod-1]+=ch;
}
while(cod!=0);
}
public static void update()throws IOException
{
tsum+=sum;
for(int i=0;i<15;i++)
{
stock[i]-=qty[i];
sale[i]+=qty[i];
msale[i]+=sale[i];
}
}
public static void end()throws IOException
{
tsum=0;
for(int i=0;i<15;i++)
sale[i]=0;
}
}
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