import java.io.*;

class BankWork
{
	// initialize and declare objects.
	final int max_limit=20;
    final  int min_limit=1;
    final double min_bal=500;
    
    private  String name[]=new String[20];
    private int accNo[]=new int[20];
    private  String accType[]=new String[20];
    private double balamount[]=new double[20];
    
    static int totRec=0;
    
    // create a constructor here of Bank.
       
    BankWork()
    {
    	for(int i=0;i<max_limit;i++)
        {
            name[i]="";
            accNo[i]=0;
            accType[i]="";
            balamount[i]=0.0;
        }
    }

    // Create method to create New entry.
    public void newEntry() 
    {
    	String str;
         
        int account;
        double amount;
        boolean permit;
        permit=true;

        if (totRec>max_limit)
        {
        	System.out.println("\n\n\nSorry we cannot admit you in our bank...\n\n\n");
            permit=false;
        }

        // create new entry.
        if(permit = true) 
        {
             totRec++;      
              
             // Incrementing Records               
             System.out.println("\n\n\n=====SAVING NEW ENTRY=====");
             try
             {
            	 accNo[totRec]=totRec;    //Created  AutoNumber  to accNo so no invalid id occurs
                 System.out.println("Account Number :  "+accNo[totRec]);
                  
                 // create object.
                 BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));
                  
                 // enter the name of customer here.
                 System.out.print("Enter the name of the Customer : ");
                 System.out.flush();
                 
                 name[totRec]=obj.readLine();
                  
                 // enter the type of account.
                 System.out.print("Enter Account Type : ");
                 System.out.flush();
                  
                 accType[totRec]=obj.readLine();
                 do
                 {
                	 // enter the starting amount.
                	 // minimum amount must be 1000.
                	 System.out.print("Enter Initial  Amount to be deposited : ");
                     System.out.flush();
                     str=obj.readLine();
                     
                     balamount[totRec]=Double.parseDouble(str);
                 }
                 while(balamount[totRec]<min_bal);      

                 System.out.println("\n\n\n");
             }
             catch(Exception e)
             {
            	 System.out.println("Exception in Entering a record.....");
             }
        }
    }

    // create method to display records.
    public void display() 
    {     
    	String str;
        int account=0;
        boolean valid=true;
                           
        System.out.println("\n\n=====DISPLAYING THE RECORDS=====\n");
        try
        {
        	// create object.
            BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));
            
            // enter account number.
            System.out.print("Enter the account number for display record : ");
            System.out.flush();
             
            str=obj.readLine();
            account=Integer.parseInt(str);
             
            // check for valid account number
            if (account<min_limit  || account>totRec)   
            {
            	System.out.println("\n\n\nInvalid Account Number \n\n");
                valid=false;
            }

            if (valid==true)
            {     
                System.out.println("\n\nAccount Number : "+accNo[account]);
                System.out.println("Name : "+name[account]);
                System.out.println("Account Type : "+accType[account]);
                System.out.println("Balance Amount : "+balamount[account]+"\n\n\n");
            }
        }
        catch(Exception e)
        {
        	System.out.println("Exception in Displaying record.....");
        }
    }

    // create method to deposit amount.
    public void deposit()
    {
    	String str;
        double amount;
        int account;
        boolean valid=true;
        System.out.println("\n\n\n=====DEPOSIT AMOUNT=====");
              
        try
        {
            // create object.
        	BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));

            System.out.print("Enter Account No : ");
            System.out.flush();
             
            str=obj.readLine();
            account=Integer.parseInt(str);
            
            // check valid account number.
            if (account<min_limit || account>totRec)  
            {
            	System.out.println("\n\n\nInvalid Account Number \n\n");
                valid=false;
            }
           
            if (valid==true)
            {
                System.out.print("Enter Amount you want to Deposit  : ");
                System.out.flush();
                  
                str=obj.readLine();
                amount=Double.parseDouble(str);

                balamount[account]=balamount[account]+amount;

                //Displaying Depsit Details
                System.out.println("\nAfter Updation...");
                System.out.println("Account Number :  "+account);
                System.out.println("Balance Amount :  "+balamount[account]+"\n\n\n");
            }
        }
        catch(Exception e)
        {
        	System.out.println("Exception in Depositing record.....");
        }
    }

    // creating method for withdraw money.
    public void withdraw()
    { 
    	String str;
        
    	double amount,checkamount;
        int account;
        boolean valid=true;
        
        System.out.println("\n\n\n=====WITHDRAW MONEY=====");
        try
        {
            // create object. 
        	BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));
             
        	// enter account number for entering money
            System.out.print("Enter the account number to deposit money : ");
            System.out.flush();
            
            str=obj.readLine();
            account=Integer.parseInt(str);

            // check for valid account number.
            if (account<min_limit || account>totRec)  
            {
                 System.out.println("\n\n\nInvalid Account Number \n\n");
                 valid=false;
            }

            if (valid==true)
            {
            	System.out.println("Balance is : "+balamount[account]);
                System.out.print("Enter Amount you want to withdraw  : ");
                System.out.flush();
                 
                str=obj.readLine();
                amount=Double.parseDouble(str);
                checkamount=balamount[account]-amount;

                if(checkamount >= min_bal)
                {
                	balamount[account]=checkamount;
                      
                    // Updating the amount after withdraw.
                    System.out.println("\nAfter Updation...");
                    System.out.println("Account Number :  "+account);
                    System.out.println("Balance Amount :  "+balamount[account]+"\n\n\n");
                }
                else
                {
                	System.out.println("\n\nAs per Bank Rule you should maintain minimum balance of Rs 500\n\n\n");
                }
            }
        }
        catch(Exception e)
        {
        	System.out.println("Exception in Withdrawing record.....");
        }
    }		
};

class  Bank
{
    public static void main(String args[]) 
    {
        String str;
        int choice;
        choice=0;

        BankWork BW_obj = new BankWork();
        
        do
        {
        	// creating Menu.
        	System.out.println("Choose Your Choices ...");
        	System.out.println("1) New Record Entry ");
        	System.out.println("2) Display Record Details ");
        	System.out.println("3) Deposit...");
        	System.out.println("4) Withdraw...");
        	System.out.println("5) Exit");
        	System.out.print("Enter your choice :  ");
        	System.out.flush();
            try
            {
            	// creating objects.
            	BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));
                str=obj.readLine();
                choice=Integer.parseInt(str);

                switch(choice)
                {
                	case 1 :
                		// for new entry.
                		BW_obj.newEntry();
                        break;
                            
                	case 2 :
                		// for display.
                		BW_obj.display();
                        break;
                            
                	case 3 : 
                		// for deposit.
                		BW_obj.deposit();
                        break;
                           
                	case 4 : 
                		// for display.
                        BW_obj.withdraw();
                        break;
                            
                	case 5  :  
                		System.out.println("\n\n.....THANKS FOR VISITING.....");
                        break;
                        
                	default : System.out.println("\nInvalid Choice \n\n");
                }
            }
            catch(Exception e)
            {
            	System.out.println("Exception in Main....");
            }
        }
        while(choice!=5);
    }
}

/*

Choose Your Choices ...
1) New Record Entry 
2) Display Record Details 
3) Deposit...
4) Withdraw...
5) Exit
Enter your choice :  1



=====SAVING NEW ENTRY=====
Account Number :  1
Enter the name of the Customer : Aditya
Enter Account Type : Saving
Enter Initial  Amount to be deposited : 1500




Choose Your Choices ...
1) New Record Entry 
2) Display Record Details 
3) Deposit...
4) Withdraw...
5) Exit
Enter your choice :  2


=====DISPLAYING THE RECORDS=====

Enter the account number for display record : 1


Account Number : 1
Name : Aditya
Account Type : Saving
Balance Amount : 1500.0



Choose Your Choices ...
1) New Record Entry 
2) Display Record Details 
3) Deposit...
4) Withdraw...
5) Exit
Enter your choice :  3



=====DEPOSIT AMOUNT=====
Enter Account No : 1
Enter Amount you want to Deposit  : 2500

After Updation...
Account Number :  1
Balance Amount :  4000.0



Choose Your Choices ...
1) New Record Entry 
2) Display Record Details 
3) Deposit...
4) Withdraw...
5) Exit
Enter your choice :  2


=====DISPLAYING THE RECORDS=====

Enter the account number for display record : 1


Account Number : 1
Name : Aditya
Account Type : Saving
Balance Amount : 4000.0



Choose Your Choices ...
1) New Record Entry 
2) Display Record Details 
3) Deposit...
4) Withdraw...
5) Exit
Enter your choice :  4



=====WITHDRAW MONEY=====
Enter the account number to deposit money : 1
Balance is : 4000.0
Enter Amount you want to withdraw  : 2000

After Updation...
Account Number :  1
Balance Amount :  2000.0



Choose Your Choices ...
1) New Record Entry 
2) Display Record Details 
3) Deposit...
4) Withdraw...
5) Exit
Enter your choice :  2


=====DISPLAYING THE RECORDS=====

Enter the account number for display record : 1


Account Number : 1
Name : Aditya
Account Type : Saving
Balance Amount : 2000.0



Choose Your Choices ...
1) New Record Entry 
2) Display Record Details 
3) Deposit...
4) Withdraw...
5) Exit
Enter your choice :  5


.....THANKS FOR VISITING.....

*/