// A PhoneEntry object represents a name and a phone number for that person
// 4th version: encapsulated

public class PhoneEntry {
    private String name;
    private String phoneNo;  // "617-334-1234" for ex.
    
    public PhoneEntry(String name0, String phoneNo0) {
      name = name0;
      phoneNo = phoneNo0;
    }
 
    public String getName() {
        return name;
    }
    public String getPhoneNo() {
        return phoneNo;
    }
    public String areaCode() { 
      return phoneNo.substring(0,3);
    }
    public void changeAreaCode(String newCode) {
      phoneNo = newCode + phoneNo.substring(3);
    }

      
}