package bank;

/**
 * A type of BankAccount that includes a joint owner in addition to
 * the owner provided by BankAccount
 */
public class JointBankAccount extends BankAccount
{
   private String jointName;
   
   /** 
    * Construct a joint bank account with given account number,
    * owner name, joint owner name and initial balance.
    * @param accountNumber the account number
    * @param ownerName the account owner name
    * @param jointOwnerName the account joint owner
    * @param initialBalance the initial account balance
    * @throws IllegalArgumentException if account number is negative,
    * owner or joint owner name is null or empty, or if balance is negative.
    */
   public JointBankAccount(int accountNumber, String ownerName, String jointOwnerName,
      double initialBalance)
   {
      super(accountNumber, ownerName, initialBalance);
 
      if (jointOwnerName.equals("") || jointOwnerName == null)
         throw new IllegalArgumentException("Joint owner name not defined");

      jointName = jointOwnerName;
   }   

   /**
    * Return the joint owner name.
    * @return the joint owner name.
    */
   public String getJointName()
   {
      return jointName;
   } 

   /**
    * string representation of this account.
    * @return string representation of this account.
    */
   public String toString()
   {
       return "JointBankAccount[" + super.toString() + ", " + jointName + "]";
   }   
}