public class BankAccount
{
   private int accNum;              // Private access
   private String name;             // -- accessible ONLY inside 
   private double balance;          // -- the class "BankAccount"
 
   /* ====================================================
      Constructor 1: initialize all 3 instance variables
      ==================================================== */
   public BankAccount(int a, String n, double amount)
   {
      accNum = a;
      name = n;
      balance = amount;
   }

   /* ====================================================
      Default Constructor
      ==================================================== */
   public BankAccount( )
   {
      accNum = -1;
      name = "Nobody";
      balance = 0.0;
   }
   /* ==============================================
      deposit(amount): Add "amount" to balance
      ============================================== */
   public void deposit( double amount )
   {
      balance += amount;
   }
 
   /* ======================================================
      withdraw(amount): Subtract "amount" from balance
      ====================================================== */      
   public void withdraw( double amount )
   {
      if ( balance >= amount )
         balance -= amount;   // Subtract "amount" from balance
   }

   /* ==============================================
      toString(): return a String containing
                  information of BankAccount
      ============================================== */
   public String toString(  )
   {
      return( "Account number: "  + accNum
              + ", Name: "  + name
              + ", Balance: " + balance);
   }
}