Can't figure out this error...

Question

The assignment is to create a program that uses a class to store information about DVDs and then diplay the information.
One error is "cannot find symbol, symbol: constructor Dvd(), location: class Dvd, Dvd mydvd = new Dvd();
The other error is "cannot find symbol, symbol method calculateValue(), location class DvdTest, System.out.println("The value in inventory is $", calculateValue() );
Here's my code:
{code// EmployeeInfo class created by Michelle Groves
// Last edited April12 09
public class DvdTest
   public static void main(String args [])
Dvd mydvd = new Dvd();
Dvd[] prodArray = new Dvd[2]; // creat an array
prodArray[0] = new Dvd( 231562, 7.49, 2, "Cars" );
prodArray[1] = new Dvd( 231562, 7.49, 2, "Toy Story" );
// Displays first element's info
System.out.println("The stock number is " + prodArray[0].getstockedDvds());
System.out.println("Priced at " + prodArray[0].getdvdPrice());
System.out.println("Inventory contains " + prodArray[0].getstockedDvds());
System.out.println("The title is " + prodArray[0].getdvdName());
// Displays second element's info
System.out.println("The stock number is " + prodArray[1].getstockedDvds());
System.out.println("Priced at " + prodArray[1].getdvdPrice());
System.out.println("Inventory contains " + prodArray[1].getstockedDvds());
System.out.println("The title is " + prodArray[1].getdvdName());
System.out.println("The value in inventory is $", calculateValue() );
} //end main
} // end class
class Dvd
private int dvdNumber; // DVD Product Number
private double dvdPrice; // price of DVD
private double stockedDvds; // number of units in stock
private String dvdName; // name of DVD
public Dvd( int dvdNumber, double dvdPrice, double stockedDvds,
String dvdName ) // constructor for dvd
dvdNumber = 0;
dvdPrice = 0.0;
stockedDvds = 0.0;
dvdName = "";
} // end constructor
// method to set DVD number
public void setdvdNumber( int dvdNumber )
dvdNumber = dvdNumber; // store DVD number
} // end method setdvdNumber
// method to retrieve DVD number
public double getdvdNumber()
return dvdNumber;
} // end method getdvdNumber
// method to set DVD price
public void setdvdPrice( double dvdPrice )
dvdPrice = dvdPrice;
} // end method setdvdPrice
// method to retrieve DVD price
public double getdvdPrice()
return dvdPrice;
} // end method getdvdPrice
// method to set stocked number of DVDs
public void setstockedDvds( double stockedDvds )
stockedDvds = stockedDvds;
} // end method setstockedDvds
// method to retrieve stocked number of DVDs
public double getstockedDvds()
return stockedDvds;
} // end method getstockedDvds
// method to set DVD Name
public void setdvdName( String dvdName )
dvdName = dvdName;
} // end method setdvdName
// method to retrieve DVD name
public String getdvdName()
return dvdName;
} // end method getstockedDvds
// method to calculate pay for week
public double calculateValue()
return dvdPrice * stockedDvds;
} // end method total
} // end class

Answer 1

Here's my code a little more readable:
// EmployeeInfo class created by Michelle Groves
// Last edited April12 09
public class DvdTest
public static void main(String args [])
Dvd mydvd = new Dvd();
Dvd[] prodArray = new Dvd[2]; // creat an array
prodArray[0] = new Dvd( 231562, 7.49, 2, "Cars" );
prodArray[1] = new Dvd( 231562, 7.49, 2, "Toy Story" );
// Displays first element's info
System.out.println("The stock number is " + prodArray[0].getstockedDvds());
System.out.println("Priced at " + prodArray[0].getdvdPrice());
System.out.println("Inventory contains " + prodArray[0].getstockedDvds());
System.out.println("The title is " + prodArray[0].getdvdName());
// Displays second element's info
System.out.println("The stock number is " + prodArray[1].getstockedDvds());
System.out.println("Priced at " + prodArray[1].getdvdPrice());
System.out.println("Inventory contains " + prodArray[1].getstockedDvds());
System.out.println("The title is " + prodArray[1].getdvdName());
System.out.println("The value in inventory is $", calculateValue() );
} //end main
} // end class
class Dvd
private int dvdNumber; // DVD Product Number
private double dvdPrice; // price of DVD
private double stockedDvds; // number of units in stock
private String dvdName; // name of DVD
public Dvd( int dvdNumber, double dvdPrice, double stockedDvds,
String dvdName ) // constructor for dvd
dvdNumber = 0;
dvdPrice = 0.0;
stockedDvds = 0.0;
dvdName = "";
} // end constructor
// method to set DVD number
public void setdvdNumber( int dvdNumber )
dvdNumber = dvdNumber; // store DVD number
} // end method setdvdNumber
// method to retrieve DVD number
public double getdvdNumber()
return dvdNumber;
} // end method getdvdNumber
// method to set DVD price
public void setdvdPrice( double dvdPrice )
dvdPrice = dvdPrice;
} // end method setdvdPrice
// method to retrieve DVD price
public double getdvdPrice()
return dvdPrice;
} // end method getdvdPrice
// method to set stocked number of DVDs
public void setstockedDvds( double stockedDvds )
stockedDvds = stockedDvds;
} // end method setstockedDvds
// method to retrieve stocked number of DVDs
public double getstockedDvds()
return stockedDvds;
} // end method getstockedDvds
// method to set DVD Name
public void setdvdName( String dvdName )
dvdName = dvdName;
} // end method setdvdName
// method to retrieve DVD name
public String getdvdName()
return dvdName;
} // end method getstockedDvds
// method to calculate pay for week
public double calculateValue()
return dvdPrice * stockedDvds;
} // end method total
} // end class