A cannot resolve symbol question

Question

I have this code: CurrencyTable is just a class extended from JTable and has only one constructor with string parameter. So I get one error for each those lines:
euro = new CurrencyTable("euro");
dollar = new CurrencyTable("dollar");
chf = new CurrencyTable("chf");
Could you explain me why I can't declare my variables like this ? Thanks
import javax.swing.*;
public class YearPane extends JTabbedPane{
private String name;
private int index;
private CurrencyTable euro;
private CurrencyTable dollar;
private CurrencyTable chf;
private GraphicPanel gpanel;
public YearPane(String aname, int anindex) {
name = aname;
index = anindex;
euro = new CurrencyTable("euro");
dollar = new CurrencyTable("dollar");
chf = new CurrencyTable("chf");
gpanel = new GraphicPanel();
}

Answer 1

In fact I don't use the package instructions... Here are the errors:
Chargement/YearPane.java [28:1] cannot resolve symbol
symbol : constructor CurrencyTable (java.lang.String)
location: class CurrencyTable
euro = new CurrencyTable("euro");
^
Chargement/YearPane.java [29:1] cannot resolve symbol
symbol : constructor CurrencyTable (java.lang.String)
location: class CurrencyTable
dollar = new CurrencyTable("dollar");
^
Chargement/YearPane.java [30:1] cannot resolve symbol
symbol : constructor CurrencyTable (java.lang.String)
location: class CurrencyTable
chf = new CurrencyTable("chf");
^
3 errors
Errors compiling YearPane.