In this, we will learn how to create a small project like banking system using Java Language...
Flowchart for this project:-
import BankDetails.deposit;
import BankDetails.withdraw;
import BankDetails.getprev_transaction;
import loan.Loan;
import java.util.*;
public class BankingApplication
{
public static void main(String args[])
{
Bank obj=new Bank();
deposit o= new deposit();
withdraw w=new withdraw();
getprev_transaction p=new getprev_transaction();
Loan l=new Loan();
int option='\0';
int option2='\0';
int option3='\0';
int balance=0;
Scanner sc=new Scanner(System.in);
System.out.println(" WELCOME TO TRUP BANK");
System.out.println("\n");
obj.accept();
do
{
System.out.println(" What would you like to do:");
System.out.println("1. Transaction");
System.out.println(" 2. Loan");
System.out.println(" 3. exit");
System.out.println("--------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------");
option=sc.nextInt();
switch(option)
{
case 1:
System.out.println(" What would you like to do?");
System.out.println("1. Deposit");
System.out.println("2. Withdraw");
System.out.println("3. Previous Transactions");
System.out.println(" 4. exit");
System.out.println("-----------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------");
option2=sc.nextInt();
switch(option2)
{
case 1:
o.depositFun(obj.salary);
break;
case 2:
w.withdrawFun(obj.salary);
break;
case 3:
p.prevFun(obj.salary);
break;
case 4:
break;
default:
System.out.println("OOps! something went wrong!");
break;
}
break;
case 2:
System.out.println("\n");
System.out.println(" Which loan you want?");
System.out.println("1. Home loan");
System.out.println(" 2. Education loan");
System.out.println("3. Personal loan");
System.out.println(" 4. exit");
System.out.println(&"-----------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------------------");
option3=sc.nextInt();
switch(option3)
{
case 1:
l.loan1();
break;
case 2:
l.loan1();
break;
case 3:
l.loan1();
break;
case 4:
break;
default:
System.out.println("OOps! something went wrong!");
break;
}
break;
case 3:
break;
default:
System.out.println("OOps! something went wrong!");
break;
}
}
while(option!=3);
}
}
class Account
{
String name;
int account_no;
int salary;
}
class Bank extends Account
{
public void accept()
{
Scanner sc=new Scanner(System.in);
System.out.println("Enter your Name: ");
name=sc.nextLine();
System.out.println("Enter your account number: ");
account_no=sc.nextInt();
System.out.println("Enter your salary: ");
salary=sc.nextInt();
System.out.println("******************************************* ");
}
}
Package for deposit
package BankDetails;import java.util.Scanner;
import java.lang.Exception;
public class deposit implements depo
{
public void depositFun(int salary)
{
Scanner sc=new Scanner(System.in);
int balance=0;
int dep;
int prev_transaction;
if(salary!=0)
{
System.out.println("Your current salary is : "+salary );
System.out.println("Amount you wanna deposit: ");
dep=sc.nextInt();
try
{
if(dep>0)
{
balance=salary + dep;
prev_transaction= balance;
System.out.println("After deposit your balance is "+balance);
System.out.println("******************************************* ");
}
else
{
throw new MyException("Deposit cannot be in negative");
//System.out.println("******************************************* ");
//System.out.println("******************************************* ");
}
}
catch(MyException e)
{
System.out.println(e.getMessage());
System.out.println("TRANSACTION FAILURE!!");
}
}
}
}
interface depo
{
public void depositFun(int salary);
}
class MyException extends Exception
{
MyException(String message)
{
super(message);
}
}
Package for withdraw
package BankDetails;
import java.util.Scanner;
import java.lang.Exception;
class MyException extends Exception
{
MyException(String message)
{
super(message);
}
}
public class withdraw implements withdraws
{
public double withdrawFun(int salary)
{
Scanner sc=new Scanner(System.in);
int withdrawn;
int balance=0;
int prev_transaction;
if(salary!=0)
{
System.out.println("Amount you wanna withdraw: ");
withdrawn=sc.nextInt();
try
{
if(withdrawn>0)
{
balance=salary - withdrawn;
prev_transaction= balance;
System.out.println("After withdraw your balance is "+balance);
System.out.println("****************************************** ");
}
else
{
throw new MyException("Deposit cannot be in negative");
}
}
catch(MyException e)
{
System.out.println(e.getMessage());
System.out.println("TRANSACTION FAILURE!!");
}
}
return balance;
}
}
interface withdraws
{
public double withdrawFun(int salary);
}
Package for prev_transaction
package BankDetails;
public class getprev_transaction implements prev
{
public void prevFun(int prev_transaction )
{
if(prev_transaction >0)
{
System.out.println("Amount deposited in the past: "+prev_transaction );
System.out.println("*******************************************");
}
else if(prev_transaction <0)
{
System.out.println("Amount Withdrawn in the past : "+Math.abs(prev_transaction));
System.out.println("******************************************* ");
}
else
{
System.out.println("NO TRANSACTION OCCURED!");
}
}
}
interface prev
{
public void prevFun(int prev_transaction );
}
Package for Loan
package loan;import java.util.Scanner;
public class Loan implements Loan1
{
public void loan1()
{
Scanner sc=new Scanner(System.in);
int amount;
int time;
double t2=0.0;
double rate=0.0;
double total=0.0;
double t=0.0;
double interest=0.0;
System.out.println("Enter the amount");
amount=sc.nextInt();
System.out.println("Enter the time period");
time=sc.nextInt();
t=time*12;
if(amount>100000 && amount<500000)
{
rate=5.2;
}
else if(amount>500000 && amount<1000000)
{
rate=7;
}
else if(amount>1000000 && amount<20000000)
{
rate= 9;
}
else
{
rate=11.4;
}
interest=(amount*rate*t)/100;
total=interest+amount;
t2=amount/t;
System.out.println(amount+" at an interest of "+rate+ "and for a term of "+time+" years, the
monthly EMI comes to Rs. "+t2);
System.out.println("******************************************* ");
}
}
interface Loan1
{
public void loan1();
}
Output:-
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