An Example of Java Main Project for ICSE Class 10

//AUTHOR OF THE PROJECT: Mrunal.N.C
import java.io.*;   //Importing java.io packageimport java.util.*; //Importing java.util package import java.net.*;  //Importing java.net packageimport java.awt.*;  //Importing java.awt packageimport java.nio.*;  //Importing java.nio packageimport java.math.*; //Importing java.math package
public class Bill
{
 String item[]={" Full Meals    "," Dum Aloo      "," Dosa          "," Naan          "," Palak Paneer  "," Dal           "," Mini Meals    "," Samosa        "," Fried Rice    ","Chana Masala  "};    //Variable to store food items         double rate[]={200,75,35,45,75,55,155,20,40,65};  //Variable to store cost of food items String order[]=new String[10];   //Creating an Array of Base Type String and of length 10 double amt[]=new double[10];   //Creating an Array of Base Type double and of length 10 String ans;                      // Variable to store answer that is, any more items are required by the user or not char ch;                   // Variable to store the answer whether the applicarion has to be continued or not int plates[]=new int[10];        //Creating an Array of Base Type int and of length 10 int i,n=0,no,x=0; static Bill object =new Bill();   //Creating an object of Bill type
 BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
 Bill()   //A default Constructor {    } 
 public void putOrder()throws Exception   //A function putOrder returning no value(void return type)with a public access specifier   {     System.out.println(" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");     System.out.println("                                     Four Seasons Hotel                                      ");     System.out.println("                                         Menu Card                                          ");   //Displaying the MENU     System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");     System.out.println("  Item No.                            Item                                        Rate/plate");    for(i=0;i< 10;i++){         System.out.println("  "+(i+1)+ ":                                 "+item[i]+"                               "+rate[i]);     }
for(int i=1;i<=1;i++){
System.out.println("   \n   Enter item number from 1 to 10 to place order\n");
}x=0;       while(true){if(x==10)break;
         Scanner sc=new Scanner(System.in);         System.out.print("   Please enter the item number :");         no=sc.nextInt();                 order[x]=item[no-1];         amt[x]=rate[no-1];                System.out.print("   Please Enter the number of plates :");         no=Integer.parseInt(br.readLine());         plates[x]=no;         x++;                 if(x>0)         {                         System.out.print("   Any More Item ?(Y/N):");             ans=br.readLine().toUpperCase();             if(ans.equals("N"))             break;                      }         }               showBill();                }         //putOrder function ends here        private void showBill() throws Exception{
double bamt=0,b;
System.out.println("\f");System.out.println("   You have ordered\n");System.out.println("   Item                                                     Rate                        No. of Plates");
  for(i=0;i< x;i++)  {            System.out.println("   "+(i+1)+":"+order[i]+"                                        "+amt[i]+"                              "+plates[i]);        }     while(true)      {         if(x< 2)         break;                 System.out.print("   Want to cancel any item (Y/N):");         ans=br.readLine().toUpperCase();         if(ans.equals("N"))         break;                 //If the user wants to cancell any item         System.out.print("   Which item to cancel, enter item number:");         no=Integer.parseInt(br.readLine());                 for(i=no-1;i< x-1;i++)         {                          order[i]=order[i+1];              amt[i]=amt[i+1];              plates[i]=plates[i+1];                      }            x--;         }         //Displaying Bill        System.out.println("\f");        System.out.println("   Cash Memo\n");        System.out.println("   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");        System.out.println("                                     Four Seasons Hotel                                      ");        System.out.println("   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");        System.out.println("   Item                      No. of plates             Rate                     Amount");        System.out.println("   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");                for (i=0;i< x;i++)         {                    System.out.print("   "+order[i]+ "                "+plates[i]+ "                  "+ amt[i]+ "                      ");              b=plates[i]*amt[i];        System.out.println(b);        bamt=bamt+b;               }               System.out.println("    Bill Amount Rs.                                                            "+bamt);        System.out.println("   ____________________________________________________________________________________");        bamt=bamt+bamt*.125;        System.out.println("   Total Amount including service charge @ 12.5% Rs.                          "+bamt);        System.out.println("   ____________________________________________________________________________________");        System.out.println("                             THANK YOU VISIT AGAIN");               System.out.println("   Press any key to continue :");        String ab=br.readLine();      }

public static void main(String[]args)throws Exception{   //Handling Exceptionsdo{
   try{        object.n=0;        object.i=0;        object.no=0;        object.ans="";               for(int y=0;y<10;y++)        {                   object.order[y]="";          object.amt[y]=0;        object.plates[y]=0;               }               object.putOrder();         //Calling the function putOrder        System.out.print("\f");   //Clearing the Screne    }       catch(ArithmeticException e1)    {        System.out.println("Sorry some problem has occured");           }       catch(ArrayIndexOutOfBoundsException e2)    {             System.out.println("   Sorry we dont have such item"); 
    }       catch(NumberFormatException e3)    {              System.out.println("   The input was not a number therfore an error has occured ");    }       catch(ArrayStoreException e4)    {             System.out.println("   Sorry some problem has occured"   );    }       catch(ClassCastException e5)    {               System.out.println("   An error has occured please run the application again");    }       catch(IllegalArgumentException e6)    {               System.out.println("   An error has occured please run the application again");    }       catch(IllegalStateException e7)    {              System.out.println("   An error has occured please run the application again");    }       catch(IndexOutOfBoundsException e9)    {             System.out.println("   An error has occured please run the application again");    }       catch(NegativeArraySizeException e10)    {            System.out.println("   An error has occured please run the application again");    }       catch(NullPointerException e11)    {            System.out.println("   An error has occured please run the application again");    }       catch(SecurityException e12)    {             System.out.println("   An error has occured please run the application again");    }       catch(UnsupportedOperationException  e13)    {              System.out.println("   An error has occured please run the application again");    }       catch(java.util.InputMismatchException e14)    {             System.out.println("   The Input was wrong therfore an error has occured ");         }       System.out.print("\n   Do you want to continue the Application(Y/N)? :");      object.ch=(char)System.in.read();     //If ch is N or n the Applications ends    object.ch=Character.toUpperCase(object.ch);    System.out.print("\f");      }while(object.ch!='N');   //Loop get excuited as long as ch is not equal to n or N
System.out.println("\f\n                                       T  H  A  N  K   Y  O  U ! !");  }}// Program Ends