Question

Again, I am a java n00b and I am trying to learn from scratch and running into some embarrassing problems.

I got an Account class as follows:Account.java

 public class Account 
 {
    protected double balance;

    // Constructor to initialize balance
    public Account( double amount )
{
    balance = amount;
}

    // Overloaded constructor for empty balance
    public Account()
{
    balance = 0.0;
}

    public void deposit( double amount )
{
    balance += amount;
}

    public double withdraw( double amount )
{
            // See if amount can be withdrawn
    if (balance >= amount)
    {
        balance -= amount;
                    return amount;
    }
    else
            // Withdrawal not allowed
                    return 0.0;
}

    public double getbalance()
{
            return balance;
}
  } 

I am trying to use extends to inherit the methods and variables in this class. So, I used InterestBearingAccount.java

 import Account;

 class InterestBearingAccount extends Account
  {
    // Default interest rate of 7.95 percent (const)
    private static double default_interest = 7.95;

    // Current interest rate
    private double interest_rate;

    // Overloaded constructor accepting balance and an interest rate
    public InterestBearingAccount( double amount, double interest)
{
    balance = amount;
    interest_rate = interest;
}

    // Overloaded constructor accepting balance with a default interest rate
    public InterestBearingAccount( double amount )
{
    balance = amount;
    interest_rate = default_interest;
}

    // Overloaded constructor with empty balance and a default interest rate
    public InterestBearingAccount()
{
    balance = 0.0;
    interest_rate = default_interest;
}

    public void add_monthly_interest()
{
            // Add interest to our account
    balance = balance +
                    (balance * interest_rate / 100) / 12;
}

 }

I get an error saying import error ‘.’ expected when I try to compile. All the files are in the same folder.

I did javac -cp . InterestBearingAccount

Answer 1

If all the files are in the same folder / package, you don’t need to do an import.