Simple Bank Application

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/* simple bank application program*/

public class InsufficientBalanceException extends Exception{
   
    InsufficientBalanceException(){
        super();
    }
    InsufficientBalanceException(String msg){
        super(msg);
    }


}

 

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public class FixedDepositeAccount extends Account {

    public double callInterest(double amount){
        System.out.println("....................................................................");
        System.out.println("your Fixed deposite rate of interest is 9");
        return amount+(amount*9)/100;
    }
}
 

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public class Customer {

     String name;
    String address;
    double accountNO;
    double currentBalance;
    static Customer arr[]=new Customer[50];
   
}
 
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public class CurrAccount extends Account{

    public double callInterest(double amount){
        System.out.println("....................................................................");
        System.out.println("your current account rate of interest is 8");
        return amount+(amount*8)/100;
    }
}
 
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import java.util.Scanner;
public class Account extends BankApplication{
    String accountType;
    double accountNumber;
    double minimumBalance;
    double currentBalance;
     static int k=0;  
  
    public static void main(String args[]) {
        double q=5765647;
        double balance;
        int go=0,goba=0;
      
      
    do{  
        Account Accountobj=new Account();
        Scanner scan=new Scanner(System.in);
        System.out.println(".............welcome to the Bank...................");
        System.out.println("enter the account type\n"
                + "1- Fixed deposite\n"
                + "2- Current Account");
        System.out.print("choice = ");
        int accchoice=scan.nextInt();
        if(accchoice==1){
        Accountobj.setAccountType("Fixed deposite");
        }
        else{
            Accountobj.setAccountType("Current Account");
        }
        System.out.println("account type is = "+Accountobj.getAccountType());
        Accountobj.setAccountNumber(q++);
        Accountobj.setMinimumBalance(100);
      
        double accountNumber=Accountobj.getAccountNumber();
        System.out.println();
        System.out.println("enter the current balance of your account {minimum balance is 100}");
        balance=scan.nextDouble();
        Accountobj.setCurrentBalance(balance);
        double currentBalance=Accountobj.getCurrentBalance();
        try{
            if(currentBalance<Accountobj.getMinimumBalance()){
      
        throw new InsufficientBalanceException(" low balance ");
        }
        }
        catch(Exception e){
            System.out.println("hello... "+e);
        }
        System.out.println("do you go for bank applications press(1/0)");
        System.out.print("choice = ");
        System.out.println();
        int ba=scan.nextInt();
        if(ba==1){
      
            do{
        BankApplication BAobj=new Account();
        BAobj.menuDisplay(accountNumber,currentBalance,k++);
        System.out.println();
        System.out.println("do you want to continue Bank Application press(1/0).. ");
        System.out.print("choice = ");
         goba=scan.nextInt();
            }while(goba==1);
            }
        if(accchoice==1){
            FixedDepositeAccount interestobj=new FixedDepositeAccount();
            System.out.println("total amount is.."+interestobj.callInterest(currentBalance));
        }
        else{
            CurrAccount interestobj=new CurrAccount();
            System.out.println("total amount is.."+interestobj.callInterest(currentBalance));
        }
        System.out.println("are you a new customer press(1) ,press(0) for no customer..");
        System.out.print("choice = ");
    go=scan.nextInt();
      
    }while(go==1);
    }
  
    public String getAccountType() {
        return accountType;
    }
    public void setAccountType(String accountType) {
        this.accountType = accountType;
    }
    public double getAccountNumber() {
        return accountNumber;
    }
    public void setAccountNumber(double accountNumber) {
        this.accountNumber = accountNumber;
    }
    public double getMinimumBalance() {
        return minimumBalance;
    }
    public void setMinimumBalance(double minimumBalance) {
        this.minimumBalance = minimumBalance;
    }
    public double getCurrentBalance() {
        return currentBalance;
    }
    public void setCurrentBalance(double currentBalance) {
        this.currentBalance = currentBalance;
    }
  
  
}
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import java.util.Scanner;
public class BankApplication extends Customer{
     String name;
        String address;
        double accountNO;
        double currentBalance;
            Scanner scan=new Scanner(System.in);
    public void menuDisplay(double accNo,double currBal,int k){
System.out.println("select the choice\n"
            + "1- Add Customer\n"
            + "2- Delete Customer\n"
            + "3- update customer\n"
            + "4- coustmer information");

int choice=scan.nextInt();
BankApplication BAobj=new BankApplication();
switch(choice)
{
case 1:
       BAobj.addCustomer(k,accNo,currBal);
       break;
case 2:System.out.println("enter name of customer do you want to delete");
scan.nextLine();
       String delName=scan.nextLine();
BAobj.deleteCustomer(delName,k);
break;
case 3:
BAobj.updateCustomer( k);

break;
case 4:
BAobj.getCustomerInfo(k);
break;
default:System.out.println("wrong choice..");
}
if(choice==2|choice==3){
    k=k-1;
}
}
public void addCustomer(int k,double accNo,double currBal){
    Customer obj1=new Customer();
    System.out.println("....................................................................");
    System.out.println();
    System.out.println("enter the name of customer");
    obj1.name=scan.nextLine();
    System.out.println("enter the address");
    obj1.address=scan.nextLine();
    obj1.accountNO=accNo;
    obj1.currentBalance=currBal;
    arr[k]=obj1;
   
}

public void deleteCustomer(String delName,int k){
    try{
    System.out.println("....................................................................");
   
    int q=-1;
    for(int i=0;i<k;i++)
    {
        if(arr[i].name==delName){
            q=i;
            break;
        }
       
    }
    if(q==-1){
            System.out.println("this name customer is not found..");
        }
    else{
        System.out.println("customer is deleted..");
        for(int i=q;i<k-1;i++){
            arr[i]=arr[i+1];
        }
    }
arr[k-1]=null;
    }
    catch(Exception e){
        System.out.println("there is no customer..");
    }
}

public void updateCustomer(int k){
    Customer obj1=new Customer();
    System.out.println("....................................................................");
int up=0;
    //System.out.println("the total customer are "+(k));
    System.out.println("select the customer number to which you want to update");
    int cupdate=scan.nextInt();
   

    do{
        System.out.println();
   
    System.out.println("which you want to update..\n"
            + "1- name\n"
            + "2- address\n"
            + "3- account number\n"
            + "4- current Balance");
    System.out.print("choice = ");
    int updatechoice=scan.nextInt();
    switch(updatechoice)
    {
    case 1:System.out.println("enter the updated name of customer");
    scan.nextLine(); 
    String newname= scan.nextLine();  
    obj1.name=newname;
    obj1.address=arr[cupdate].address;
    obj1.accountNO=arr[cupdate].accountNO;
    obj1.currentBalance=arr[cupdate].currentBalance;
    arr[cupdate]=obj1;
           break;
    case 2:System.out.println("enter the  updated address");
    scan.nextLine();
    String newadd=scan.nextLine();    
    obj1.address=newadd;
    obj1.name=arr[cupdate].name;
    obj1.accountNO=arr[cupdate].accountNO;
    obj1.currentBalance=arr[cupdate].currentBalance;
    arr[cupdate]=obj1;
         break;
    case 3:    System.out.println("enter the updated account number");
    double newno=scan.nextDouble();
    obj1.accountNO=newno;
    obj1.name=arr[cupdate].name;
    obj1.address=arr[cupdate].address;
    obj1.currentBalance=arr[cupdate].currentBalance;
    arr[cupdate]=obj1;
    break;
    case 4:System.out.println("enter the updated current Balance");
    double currbal=scan.nextDouble();
    obj1.currentBalance=currbal;
    obj1.name=arr[cupdate].name;
    obj1.address=arr[cupdate].address;
    obj1.accountNO=arr[cupdate].accountNO;
    arr[cupdate]=obj1;
   
}
System.out.println("do you want to update more info press(1/0)");
up=scan.nextInt();
}while(up==1);
}

public void getCustomerInfo(int k){
try{
    System.out.println("....................................................................");
    //System.out.println("the total customer are "+k);
   
    System.out.println("select the customer number to which info you want to know..");
    int cInfo=scan.nextInt();
   
    System.out.println("the name is "+arr[cInfo].name);
    System.out.println("the address is "+arr[cInfo].address);
    System.out.println("the account number is "+arr[cInfo].accountNO);
    System.out.println("the current balance is "+arr[cInfo].currentBalance);
}
    catch(Exception e){
        System.out.println("there is no customer..");
    }
}
}