Electricity bill preparation source codes in java?

Answer 1

import java.io.*;

import java.lang.*;

class electricity extends Exception

{

int b1;

electricity(int b)

{

b1=b;

System.out.println("\n\t\t Exception will caught below ");

}

}

class electric

{

static void compute(int a,int b,String name,String bno)throws IOException,electricity

{

name=name;

bno=bno;

if(b<a)

throw new electricity(b);

else

{

int tmr,amt=0,z=0;

tmr=b-a;

do

{

DataInputStream in=new DataInputStream(System.in);

System.out.println("\n\t Click any purpose ");

System.out.println("\n\t\t 1-Domestic ");

System.out.println("\n\t\t 2-Agriculture ");

System.out.println("\n\t\t 3-Industry ");

System.out.println("\n\t\t 4.Exit");

System.out.println("\n\n\t\t Enter ur Choice :");

int ch=Integer.parseInt(in.readLine());

switch(ch)

{

case 1:

if(tmr<=100)

amt =tmr *2;

else if(tmr >100 && tmr <=200)

amt=(tmr-100) *4 +100*2;

System.out.println("\n\n\t\t **********************************************");

System.out.println("\t\t\t Electricity Bill Preparation ");

System.out.println("\t\t **********************************************\n\n");

System.out.println("\n\t\t Name : " +name + " Bill no : " + bno );

System.out.println("\n\t\t Previous Meter Reading : " +a );

System.out.println("\n\t\t Closed Meter Reading :" +b );

System.out.println("\n\t\t Current Meter Reading :" +tmr );

System.out.println("\n\t\t Purpose : Domestic " );

System.out.println("\n\t\t Total Amount Rs. :" +amt );

break;

case 2:

if(tmr<=100)

amt =tmr *0;

else if(tmr >100 && tmr<=200)

amt=(tmr-100) *1 +100*0;

System.out.println("\n\n\t\t **********************************************");

System.out.println("\t\t\t Electricity Bill Preparation ");

System.out.println("\t\t **********************************************\n\n");

System.out.println("\n\t\t Name : " +name + " Bill no : " + bno );

System.out.println("\n\t\t Previous Meter Reading : " +a );

System.out.println("\n\t\t Closed Meter Reading :" +b );

System.out.println("\n\t\t Current Meter Reading :" +tmr );

System.out.println("\n\t\t Purpose : Agriculture " );

System.out.println("\n\t\t Total Amount Rs. :" +amt );

break;

case 3:

if(tmr<=100)

amt =tmr *4;

else if(tmr >100 && tmr<=200)

amt=(tmr-100) *8 +100*4;

System.out.println("\n\n\t\t **********************************************");

System.out.println("\t\t\t Electricity Bill Preparation ");

System.out.println("\t\t **********************************************\n\n");

System.out.println("\n\t\t Name : " +name + " Bill no : " + bno );

System.out.println("\n\t\t Previous Meter Reading : " +a );

System.out.println("\n\t\t Closed Meter Reading :" +b );

System.out.println("\n\t\t Current Meter Reading :" +tmr );

System.out.println("\n\t\t Purpose : Industry " );

System.out.println("\n\t\t Total Amount Rs. :" +amt );

break;

case 4:

System.exit(0);

}

System.out.println("\n\t Continue :");

z=Integer.parseInt(in.readLine());

} while(z==1);

}

}

public static void main(String ar[])throws IOException

{

electric ee=new electric();

String name,bno;

int pmr,cmr;

DataInputStream in=new DataInputStream(System.in);

System.out.println("\n\t ELECTRICITY BILL USING USERDEFINED EXCEPTION ");

System.out.print("\n\t\t Enter the name : ");

name=in.readLine();

System.out.print("\n\t\t Enter the Bill Number :");

bno=in.readLine();

System.out.print("\n\t\t Previous Meter Reading : ");

pmr=Integer.parseInt(in.readLine());

System.out.print("\n\t\t Current Meter Reading : ");

cmr=Integer.parseInt(in.readLine());

try

{

compute(pmr,cmr,name,bno);

}

catch(Exception e)

{

System.out.println("\n\t\tUserDefined Exception is found");

}

}

}