java Bank Account Management Project.

java Bank Account Management Project.

package bankmanagment;
import java.util.*;
/**
 *
 * @author Shohan
 * Bank Account Class 
 * // Main ClassName -- "Main" 
 */


class Account{
    String name,acc_type;
    int Acc_num,Acc_Balance;
    Account(){
      
    }
        Account(String n,int acc_num,int b,String a_t){
            name=n;
            Acc_num=acc_num;
            Acc_Balance=b;
            acc_type=a_t;
        }
} // end class

class create_account extends Account{
    create_account(String n,int acc_num,int b,String a_t){ // pass name and account type 
            name=n;
            Acc_num=acc_num;
            Acc_Balance=b;
            acc_type=a_t;
    }
    create_account(){
        super();
    }
        
    void insert(String n,int acc_num,String a_t){ // input user name, account number and type 
        name=n;
        acc_type=a_t;
        Acc_num=acc_num; // generate random number 
        Acc_Balance=0;
    }
    
    void display_details(){
        System.out.println("Depositor Name :" +name);
        System.out.println("Account Number : "+Acc_num);
        System.out.println("Account Balance : "+Acc_Balance);
        System.out.println("Account Type : "+acc_type);
    }
 
        void deposite(int acc_num,int money){                 
                Acc_Balance=money;    
        }
        
        int withdraw(int withd){
                Acc_Balance=Acc_Balance-withd;
                return Acc_Balance;
        }
  
} // end class 

      
public class Main {
    public static void main(String args[]){
        String user_name=null,type;
        type = null;
        int balance=0,tmp=0;
        int withd=0,cb=0;
// to generate Random Account Number 
int aNumber = 0; 
aNumber = (int)((Math.random() * 9000)+1000); 

        create_account user = new create_account("user",0,0,"savings"); // initilaize -- name,acc_number,Balance,Type
    
            Scanner in = new Scanner(System.in);
            Scanner strng=new Scanner(System.in);
            int userChoice;
            boolean quit = false;

            do {
                  System.out.println("1. Create Account");
                  System.out.println("2. Deposit money");
                  System.out.println("3. Withdraw money");
                  System.out.println("4. Check balance");
                  System.out.println("5. Display Account Details");
                  System.out.println("0. to quit: \n");
                  System.out.print("Enter Your Choice : ");
                  userChoice = in.nextInt();
                  switch (userChoice) {
                      
                  case 1:
                        System.out.print("Enter your Name : ");
                        user_name=strng.nextLine(); 
                        System.out.print("Enter Accout Type : ");
                        type=in.next();
                        user.insert(user_name, aNumber, type);  // inserted 
                        System.out.println("\n\tYour Account Details\n\tDont Forget Account Number\n");
                        System.out.println("**************************");                       
                        user.display_details();
                        break;
                      
                case 2: // deposite
                    System.out.print("Enter your account Number : ");
                    tmp=in.nextInt();
                 if(tmp==user.Acc_num){
                 System.out.print("Enter Amount Of Money : ");
                 balance=in.nextInt();
                 user.Acc_Balance=balance;
                 System.out.println("\t Successfully Deposited.");
              }                
                     else
                    System.out.println("Wrong Accoount Number.");          
                   break;
                    
                  case 3: // withdraw money                      
                     System.out.print("Enter your account Number : ");
                      tmp=in.nextInt();
                      
                          if(tmp==user.Acc_num){                         
                             if(user.Acc_Balance==0)
                             System.out.print("Your Account is Empty.");
                             
                             else{
                             System.out.print("Enter Amout Of Money : ");   
                             withd=in.nextInt();  
                             
                             if(withd>user.Acc_Balance){
                             System.out.print("Enter Valid Amout of Money : ");
                             withd=in.nextInt();
                             }
                             else
                             cb= user.withdraw(withd);
                             System.out.println("Your Current Balance : "+cb);   
                             }
                          }
                             else
                             System.out.println("Wrong Accoount Number.");  
                        break;
     
                  case 4: // check balance 

                      System.out.print("Enter your Account Number : ");
                      tmp=in.nextInt();
                      
                             if(tmp==user.Acc_num){
                             System.out.println("Your Current Balance : "+user.Acc_Balance);
                             }
                             else
                             System.out.println("Wrong Accoount Number.");                         
                      break;
                      
                  case 5: // display all info 
                          
                      System.out.print("Enter your Account Number :");
                      tmp=in.nextInt();                     
                             if(tmp==user.Acc_num){                               
                             user.display_details();                             
                        }else
                             System.out.println("Wrong Accoount Number.");
                             
                      break;
                  case 0:
                        quit = true;
                        break;
                  default:
                        System.out.println("Wrong Choice.");
                        break;
                  }
                  System.out.println("\n");
            } while (!quit);
            System.out.println("Thanks !");
             
     } //  end main function 
    
} //  end mian class

Bro! There is some logic missing in case 3 i.e., in Withdrawl. There should be some more lines added between line-126 to line 129 because after entering the valid amount it shows "Your current balance is 0". So I think that should be corrected.

1.The account number is same for all the accounts created.
2. If we deposite twice,rather than adding the two, only displays the second one as current balance. Like I deposite 100 bucks and than deposite 10 bucks again. Instead of getting 110 we get 10 when we check balance.
3. The current balance is 0 everytime we withdraw some money.

best

Hi
I copy pasted (retyped) this program as it is. But only output i am able to get is
Enter your choices
1
2
3
4
5

when I enter a choice..it asks for bank account number and whatever number i type....it exits the program & again gives the same output. If the account number I give is too long..it gives inputmismatchexception.

Also , by tyoing in 1st option...the account does not get created. it asks for account type and again exits. can anyone plz help?