choice =Integer.parseInt(JOptionPane.showInputDialog
("What do you want to calculate? \n[1] Water Bill \n[2] Electricity
Bill")); switch(choice) { case 1:
JOptionPane.showInputDialog( null, "Water consumed:"); {
int water_consumed; if (water_consumed >0
&&water_consumed 100 &&water_consumed300 &&
water_consumed500) {units=water_consumed-500;
water_amt=15*100+30*200+45*200+units*60;}
else {JOptionPane.showMessageDialog(null,"Wrong Unit
Consumed Entered","ERROR",JOptionPane.ERROR_MESSAGE);}
JOptionPane.showMessageDialog(null,"CONSUMED
UNITS~~~>"+water_consumed+"\nAmount of Electricity
Bill~~>"+water_amt,"BILL
CALCULATOR",JOptionPane.INFORMATION_MESSAGE); break;
