The program for bank management using exception Handling and Interface using Java is executed using netbeans
PROGRAM:
/*the program is compiled and executed using Netbeans
author : PcTipsandTweaks
*/
packagebank.pkginterface;
interface Account
{
voidCreateAcc();
void Deposit();
void Withdraw();
}
//Package to do Exception handling and BankMangement
packagebank.pkginterface;
importjava.util.Scanner;
importjava.util.Random;
importjava.lang.Exception;
//importing for Exception
Handling
classMyException extends Exception //User
Defined Exception Handling
{
MyException(String message)
{
super(message);
}
}
classBankUtilities //Class
BankUtilities for Initialization and Declaration
{
intacctype,year=1,ssn=0,accnum;
floatintr;
String
name="";
String
loc="";
Scanner in = new
Scanner(System.in);
Random rnd = new
Random();
double temp=0.0,bal=0.0;
}
class Bank extends BankUtilities implements Account //Class Bank Inheriting from BankUtilities
{
voidgetInfo() //Getting User Details When
Creating New Account
{
try
{
System.out.print("Enter Name: ");
name=in.nextLine();
System.out.print("Enter Account Number: ");
ssn=in.nextInt();
in.nextLine();
System.out.print("Enter Location: ");
loc=in.nextLine();
System.out.println("Mention account type:\n1.Savings
(7% intr )\t2.Current (5% intr) ");
acctype=in.nextInt();
switch(acctype)
{
case 1:
System.out.println("Enter the initial amount of
deposit:");
temp=in.nextFloat();
if(temp<0)
{
System.out.println("Invalid Amount\nTry
again:\n");
System.out.println("Enter the initial amount of
deposit:");
temp=in.nextFloat();
}
Deposit(temp); //Passing value
through methods
System.out.println("Enter no of years:");
year=in.nextInt();
if(year<=0)
{
System.out.println("Invalid year\n Try
again.");
System.out.println("Enter noof years:");
year=in.nextInt();
}
break;
case 2:
System.out.println("Enter the initial amount of
deposit:");
temp=in.nextFloat();
if(temp<0)
{
System.out.println("Invalid Amount\nTry
again:\n");
System.out.println("Enter the initial amount of
deposit:");
temp=in.nextFloat();
}
Deposit(temp);
break;
default: System.out.println("Invalid
Option");
}
//Switch
}
catch(Exception e) ` //Throw
Exception if anything Wrong From User Input
{
System.out.println("Inbuilt Exception -->
"+e);
System.exit(0);
}
}//getInfo
public void CreateAcc()
//Create
a new account
{
try
{
getInfo(); //CallingetInfo()
to get user details
System.out.println("\nAccount Successfully
Created!");
accnum=rnd.nextInt(1000)+1;
System.out.println("Hello "+name+" your
account no is " +accnum+".\n");
}
catch(Exception e) //To throw Exceptionif
Error happens
{
System.out.println("Fatal Error");
}
}
void Deposit(double temp) // Initial Deposit
{
try
{
if(temp>500)
{
bal+=temp;
System.out.println("SUCCESSFULLY DEPOSITED:
"+temp);
}
else
{
throw new
MyException("Minimum Deposit Violation"); //Throw
Exception if value is //less than 500
}
}
catch(MyException e) //Catching
the Exception
{
System.out.println(e.getMessage());
System.out.println("TRANSACTION FAILURE");
System.exit(0); //If
Error Exit the Program
}
}
public void Deposit() // regular deposit
{
System.out.println("Enter the amount to be deposited
:");
temp=in.nextFloat();
try
{
if(temp>0)
{
bal+=temp;
System.out.println("SUCCESSFULLY DEPOSITED:
"+temp);
}
else
{
throw new MyException("INVALID AMOUNT
EXCEPTION"); //Throws Exception If bal<0
}
}
catch(MyException e)
{
System.out.println(e.getMessage());
System.out.println("TRANSACTION FAILURE");
}
}
public void Withdraw()// regular deposit
{
System.out.println("Enter the amount to be withdrawn
:");
temp=in.nextFloat();
if(temp<=0)
{
System.out.println("Invalid Amount Error.");
System.exit(0);
}
try
{
if(temp<bal)
{
bal-=temp;
System.out.println("SUCCESSFULLY WIITHDRAWN:
"+temp);
}
else
{
throw new
MyException("INSUFFIECEINT FUND EXCEPTION"); //Throw
Exception if //balance is less than money //to withdraw
}
}
catch(MyException e) //Catching
the Exception
{
System.out.println(e.getMessage());
System.out.println("TRANSACTION FAILURE");
}
}
void Interest()
{
try
{
if("".equals(name)&&(ssn==0))
{
throw new
MyException("ACCONT NOT FOUND EXCEPTION"); //If Account not found //Throw Error
}
else
{
if(acctype==1)
{
bal+=year*bal*0.07; //Calculating
Interest
System.out.println("7% interest added");
}
else if(acctype==2)
{
bal+=year*bal*0.03;
System.out.println("3% interest added");
}
}
}
catch(MyException e)
{
System.out.println(e.getMessage());
System.out.println("TRANSACTION FAILURE");
}
}
voidCheckBal()
{
System.out.println("Balance:"+bal);
}
}
classBankDemoExc //Main
Class BankDemoExc
{
public static void main(String arg[]) throws MyException
{
Scanner in
= new Scanner(System.in);
Bank b =
new Bank(); //Creating Object for Bank()
System.out.println("\n\n\t----Bank
Management----");
try
{
while(true)
{
System.out.println("1.Create Account\t2.Check Balance
\n3.Deposit\t\t4.Withdraw\n5.Interest\t\t6.Exit.");
intch = in.nextInt();
switch(ch)
{
case 1:
b.CreateAcc();
break;
case 2:
b.CheckBal();
break;
case 3:
b.Deposit();
break;
case 4:
b.Withdraw();
break;
case 5:
b.Interest();
break;
case 6:
System.exit(0);
break;
default: System.out.println("Invalid
Option");
}
}
}
catch(Exception e)
{
System.out.println("SELF THROWN EXCEPTION
IS--->"+e);
}
}
}
OUTPUT:
 |
| Exception Handling and Interface Output |