Java EE (Java Enterprise Edition) General Discussion

i get the following errors when trying to compile my class

package javax.faces.context does not exist
package javax.faces.component does not exist
package javax.faces.validator does not exist

i'm really new to this and i do not know what this means
i hope someone can help me

this is my really simple code

package  ourdemo;

import javax.faces.context.*;
import javax.faces.component.*;
import javax.faces.validator.*;

public class player
{
     String firstname;
     String lastname;    

     public void setfirstname(String a)
     { firstname=a; }

     public String getfirstname()
     { return firstname; }

     public void setlastname(String b)
     { lastname=b; }

     public String getlastname()
     { return lastname; }

     public void changeName()
     { lastname = firstname+" "+lastname; }              

}