Java multiple user defined exceptions

Implement a Class BankAccount with two members account_number and balance.It also has two member methods createAccount(acc_num,bal) and withdraw(amount). Implement an Exception class which handles the following exceptions.

• MinimumBalanceExcpetion: If an account is started with an amount less than the minimum balance,throw this exception.
• InSufficientFundException: If a person tries to withdraw an amount more than his/her actual balance, throw this exception.

Write a ExDemoClass with main() that tests the same.Include a finally block which prints “In finally block”.

SOLUTION:

 
import java.util.Scanner;

public class Question3ExDemoClass {
 public static void main(String[] args) {
  int ac,bal,amt;
  //Creating Scanner object
  Scanner input=new Scanner(System.in);
  System.out.println("Enter account number and balance");
  ac=input.nextInt();
  bal=input.nextInt();
  
  try
  {
   BankAccount b1=new BankAccount();
   b1.createAccount(ac, bal);
   System.out.println("Enter amount to withdraw");
   amt=input.nextInt();
   b1.withdraw(amt);
  }
  catch(MinimumBalanceException minimumBalanceException){
   System.out.println(minimumBalanceException.getLocalizedMessage());
  }
  
  catch(InsufficientFundException insufficientFundException){
   System.out.println(insufficientFundException.getMessage());
  }
  
  finally{
   System.out.println("In finally block.");
  }
 }
}

class BankAccount {
 private int accountNumber;
 private int balance;
 
 void createAccount(int a,int b) throws MinimumBalanceException {
  if(b<1000)
   throw new MinimumBalanceException("Please deposit more Money.");
  else {
   this.accountNumber=a;
   this.balance=b;
  }
 }
 
 void withdraw(int amount) throws InsufficientFundException {
  if(amount>this.balance)
   throw new InsufficientFundException("You do not have enough cradit balance.");
  else
   this.balance-=amount;
 }
}

class MinimumBalanceException extends Exception {
 public MinimumBalanceException(String s) {
  super(s);
 }
}

class InsufficientFundException extends Exception{
 public InsufficientFundException(String s) {
  super(s);
 }
}