[technobard]

A little more info:
The bean specification examines the class and expects certain naming conventions to figure out which properties are available, etc.

Your class should look something like:

public class User {
    String username="";
    Strimg email="";

    public User() {
    }

    public String getUsername() {
       return username;
    }

    public void setUsername(String username) {
       this.username = username;
    }

    public String getEmail() {
       return email;
    }

    public void setEmail(String email) {
       this.email = email;
    }
}

If I remember correctly, the getter and setter methods must be named by using the prefixes "get" and "set" followed by the variable name with the first letter capitalized.