Refactoring: Growing Software like a Gardener

example2a.java

class Person..
  public String getName(){
    return _name;
  }

  public String getTelephoneNumber() {
    return ("(" + _officeAreaCode + ")" + _officeNumber);
  }

  public getOfficeAreaCode(){
    return _officeAreaCode;
  }

  void setOfficeAreaCode(String arg){
    _officeAreaCode = arg;
  }

  String getOfficeNumber(){
    return _officeNumber;
  }

  void setOfficeNumber(String arg){
    _officeNumber = arg;
  }

  private String _name;
  private String _officeAreaCode;
  private String _officeNumber;

example2b.java

class Person..{
  public String getName(){
    return _name;
  }
  
  public String getTelephoneNumber(){
    return _officeTelephoneNumber(){
      return _officeTelephone.getTelephoneNumber();
    }
  }
  
  TelephoneNumber getOfficeNumber() {
    return _officeTelephone;
  }
  
  private String _name;
  private TelephoneNumber _officeTelephone = new TelephoneNumber();

}

class TelephoneNumber{
  public String getTelephoneNumber() {
    return ("(" + _AreaCode + ")" + _number);
  }

  public getAreaCode(){
    return _AreaCode;
  }

  void setAreaCode(String arg){
    _officeAreaCode = arg;
  }

  String getNumber(){
    return _number;
  }

  void setNumber(String arg){
    _number = arg;
  }

  private String _name;
  private String _areaCode;
  private String _number;

}