BankAccount.java

public class BankAccount {

  private double balance;
  private int accountID;
  private String password;

  public BankAccount (int a, String p) {
    password = p;
    accountID = a;
    balance = 0.0;
  }

  public double getBalance() {
    return balance;
  }

  public int getAccountID() {
    return accountID;
  }

  public void setPassword(String newPass) {
    password = newPass;
  }

  public boolean deposit(double amount) {
    if (amount >= 0.0) {
      balance += amount;
      return true;
    }
    return false;
  }

  public boolean withdraw(double amount) {
    if ((amount <= balance) && (amount >= 0)) {
      balance -= amount;
      return true;
    }
    return false;
  }

  public String toString() {
      return ("#" + accountID + "\t$" + balance);
  }

  private boolean authenticate(String password) {
    return (password.equals(this.password));
  }

  public boolean transferTo(BankAccount other, double amount, String password) {
    if ((authenticate(password)) && (withdraw(amount))) {
      return (other.deposit(amount));
    } else {
      return false;
    }
  }

}