Hi guys! I have a problem with my project!
I write 4 different class: 1-BankAccount 2-DataSet 3-Tester 4-Measurable. the last is an interface(i'm sorry for my bad english) .
the 4 class are the followings:
|
Code:
|
public class BankAccount implements Measurable
{
private double balance;
private int count_number;
public BankAccount(int value)
{
count_number = value;
balance = 0;
}
public BankAccount(int value, double quantity)
{
count_number = value;
balance = quantity;
}
public void deposit(double amount)
{
double newBalance = balance + amount;
balance = newBalance;
}
public void withdrown(double amount)
{
if (balance<amount){System.out.println("Valore troppo grande");}
double newBalance = balance - amount;
balance = newBalance;
}
public double getMeasure()
{
return balance;
}
public double countNumber()
{
return count_number;
}
} |
|
Code:
|
public class DataSet
{
// instance variables - replace the example below with your own
private double sum = 0;
private Measurable maximum;
private int count=0;
public DataSet( Measurable x)
{
}
public void add(Measurable x)
{
sum = sum + x.getMeasure();
if (sum==0 || maximum.getMeasure()<x.getMeasure() ){maximum = x;}
}
public Measurable getMaximum()
{
return maximum;
}
} |
|
Code:
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public class Tester
{
DataSet tester = new DataSet(new BankAccount(0)) ;
tester.add( new BankAccount(1000) );
tester.add(new BankAccount(2000) );
tester.add(new BankAccount(3000));
Measurable max = tester.getMaximum();
double n = max.getMeasure();
} |
and the last
|
Code:
|
public interface Measurable
{
double getMeasure();
} |
when i compile BankAccount,DataSet and the interface i find no problem but when i compile the Tester I erceive the following error
"<identifier> expected"
what's wrong?
thanks!
error"<identifier> expected" trough the use of interface
Linear Mode
