Banking Program Using BlueJ

This is the Banking program on transaction.

About the program

Initially Name, Account Number, Account type ( Savings / Current etc) and Initial Balance are taken for number of clients from user.
Minimum balance amount is Rs. 500.
In case of transaction Account number, mode of transaction (withdrwal or deposit), amount are taken from user. If it is withdrwal checking is done whether the balance permits the transaction.

User can enter any Account number and the current status of the Account will be displayed.



import java.io.*;
class Bank
{
String name[],amount[],ac[],acno[],particulars[],tran[][];
/* 'name' to hold names, 'amount' will hold initial amount, 'ac' will hold type of account
( savings / current etc) and 'acno' will hold account number, 'tran' will hold the transactions
'particulars' will hold the details of trasaction */
double dep; String actype;
/* 'dep' will hold the transaction amount and 'actype' will hold account type */
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int index=0;
/* it will be the index of the above declared arrays */
int tranindex=0;
/* it will be used in the transaction array */
Bank()
{
name=new String[50];
tran=new String[50][6];
particulars=new String[50];
amount=new String[50];
ac=new String[50];
acno=new String[50];
}
void initial()throws IOException
{
int i;
String date1;
String op="Yes";
while(!op.equalsIgnoreCase("No"))
{
System.out.println("Date:");
date1=br.readLine().toUpperCase();
System.out.println("Name:");
name[index]=br.readLine().toUpperCase();
//particulars[index]="B/F";
System.out.println("A/c No.:");
acno[index]=br.readLine().trim();
System.out.println("Initial Amount:");
amount[index]=br.readLine().trim();
System.out.println("Which type of A/c -(Press 'S' for Savings,'C' for Current,'R' for Recurring,'F' for Fixed deposit):");
ac[index]=br.readLine().trim().toUpperCase();
tran[tranindex][0]=date1;
tran[tranindex][1]="B/F";
tran[tranindex][2]=acno[index];
tran[tranindex][3]="d";
tran[tranindex][4]=amount[index];
tran[tranindex][5]=amount[index];
tranindex++;
System.out.println("Any More(Yes/No:):");
op=br.readLine().trim();
index++;
}
}
void transaction()throws IOException
{
int i;
double amount1; String date1,dep1,account;
String pat;
/* 'amount1' will hold the transaction amount, 'date1' to hold the transaction date,'dep1' will hold mode of transaction, 'account' will hold account number
'pat' will hold the particulars */
System.out.println("Enter the transaction type(d for deposit/w for withdrawal):");
dep1=br.readLine().trim().toLowerCase();
System.out.println("Enter the amount:");
amount1=Double.parseDouble(br.readLine());
System.out.println("Enter the Particulars:");
pat=br.readLine().trim();
System.out.println("A/c No.:");
account=br.readLine().trim();
System.out.println("Date of transaction:");
date1=br.readLine().trim();
for( i=0;i< index;i++)
{
if(account.equals(acno[i]))
break;
}
if(i==index)
System.out.println("This A/c No.does not exist:");
else
{
if(dep1.equals("w"))
{
if(Double.parseDouble(amount[i])-amount1<500)
{
System.out.println("Insufficient Balance");
}
else
{
amount[i]=String.valueOf(Double.parseDouble(amount[i])-amount1);
tran[tranindex][0]=date1;
tran[tranindex][1]=pat;
tran[tranindex][2]=account;
tran[tranindex][3]="w";
tran[tranindex][4]=String.valueOf(amount1);
tran[tranindex][5]=String.valueOf(amount[i]);
tranindex++;
}
}
else if(dep1.equals("d"))
{
amount[i]=String.valueOf(Double.parseDouble(amount[i])+amount1);
tran[tranindex][0]=date1; // date of transaction
tran[tranindex][1]=pat;// particulars
tran[tranindex][2]=account;// account number
tran[tranindex][3]="d";// mode of transaction
tran[tranindex][4]=String.valueOf(amount1); // transaction amount
tran[tranindex][5]=String.valueOf(amount[i]);// balance
tranindex++;
}
}
}
void display(String s1)
{
int i,j;
for(i=0;i< index;i++)
{
if(s1.equals(acno[i]))
break;
}
if(i==index)
System.out.println("A/C No. does not exist:");
else
{
System.out.println("Name of the A/C holder="+name[i]);
System.out.println("A/c No.:"+s1);
System.out.println("A/c type:"+ac[i]);
System.out.println("Balance Rs:"+amount[i]);
System.out.println("*******************\n");
System.out.println("Date Particulars Withdrawn Deposited Balance\n");
for(j=0;j< tranindex;j++)
{
if(s1.equals(tran[j][2]))
{
if(tran[j][1].equals("B/F"))
System.out.println(tran[j][0]+ " " + tran[j][1]+ " "+ tran[j][5]);
else if(tran[j][3].equals("w"))
System.out.println(tran[j][0]+ " " + tran[j][1]+ " "+tran[j][4]+" "+ tran[j][5]);
else if(tran[j][3].equals("d"))
System.out.println(tran[j][0]+ " " + tran[j][1]+ " "+tran[j][4]+" "+ tran[j][5]);
}
}

}
}
public static void main(String args[])throws IOException
{
String ans="yes";
BufferedReader br1=new BufferedReader(new InputStreamReader(System.in));
Bank ob=new Bank();
ob.initial();
while(!ans.equalsIgnoreCase("No"))
{
ob.transaction();
System.out.println("Any More(Yes/No:):");
ans=br1.readLine().trim();
}
System.out.println("A/C Number to search:");
String s=br1.readLine().trim();
ob.display(s);
}
}

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