abstract class...help

[Bradley Jordan]

public abstract class Account
{
private int acctNumber;
private int accBalance;
 

public Account ()
{
accBalance = 0;
}
public Account (int acctNumber, int accBalance)
{
setAcctNumber(acctNumber);
setAccBalance(accBalance);
}
 
public int getAcctNumber ()
{
return acctNumber;
}
 
public void setAcctNumber (int acctNumber)
{
if (acctNumber > 0 )
{
this.acctNumber = acctNumber;
}
}
public int getAccBalance ()
{
return accBalance;
}
 
public void setAccBalance (int accBalance)
{
if (accBalance > 0 )
{
this.accBalance = accBalance;
}
}
public String toString ()
{
String output = "Account # =" + acctNumber +  "\n" + "Account Balance = " + accBalance;
return output;
}
public abstract double computeInterest(int investmentPeriod );
}

that is my abstract code;
here is my subclass checking:

public class Checking extends Account
{
public Checking (int acctNumber, int accBalance)
{
super(acctNumber, accBalance);
}
 
public String toString (int acctNumber, int accBalance)
{
String output = "Checking # =" + acctNumber +  "\n" + "Account Balance = " + accBalance;
return output;
}
 
public double computeInterest (int intrestPeriod)
{
return ((accBalance - 700)* .02)* intrestPeriod;}

I am trying to complie that but getting this error:
accBalance has private access in Account
return ((accBalance - 700)* .02)* intrestPeriod; how do I get around this. I am only allowed to have the computeIntrest method take one integer arugment and return a double? I can add another variable to the method but that would violate the rule.
can anybody help with this?

[Chandra Bhatt]

Hi Jordon,

public double computeInterest (int intrestPeriod)
{
[B]return ((getAccBalance() - 700)* .02)* intrestPeriod;[/B]} // Modified line

take accountbalance using the getter method. It is the proper
way, you can't access private variables of your parent class.


Regards,
cmbhatt

[Keith Lynn]

I would make the variables in the superclass that need to be used in the subclass protected.

[Bradley Jordan]

thanks that worked...