Apex final GetPerson class

GetPerson.cls

public class GetPerson {
   public String x_id {get;set;}
   public String name {get;set;}
   public Integer age {get;set;}
   public List<String> kids {get;set;}
   public Car car {get;set;}

   public class Car {
      public String model {get;set;}
      public String year {get;set;}
   }

   public static List<getperson> parse(String jsonInput) {
    JSONParser parser = JSON.createParser(jsonInput);
    List<GetPerson> gpList = new List<GetPerson>();
    while(parser.nextToken() != JSONToken.END_ARRAY) { // we started with an array of objects
        GetPerson gp = new GetPerson();
        while(parser.nextToken() != JSONToken.END_OBJECT){ // loop through each object
            if(parser.getCurrentToken() == JSONToken.FIELD_NAME) { //token should be field name
                String attr = parser.getText(); //get the text of the field name
                parser.nextToken(); // move the pointer
                //start mapping the fields
                if(attr == '_id') { 
                    gp.x_id = parser.getText();
                } else if(attr == 'name') {
                    gp.name = parser.getText();
                } else if(attr == 'age') {
                    gp.age = parser.getIntegerValue();
                } else if(attr == 'car') {
                    //create instance of the inner class car
                    GetPerson.Car gpcar = new GetPerson.Car();
                    //this is new object - make another while to loop through       
                    while(parser.nextToken() != JSONToken.END_OBJECT) {
                        if(parser.getCurrentToken() == JSONToken.FIELD_NAME) {
                            String carAttr = parser.getText();
                            //move the pointer
                            parser.nextToken();
                            if(carAttr == 'model') {
                                gpcar.model = parser.getText();
                            } else if(carAttr == 'year') {
                                gpcar.year = parser.getText();                  
                                //finally assign the year assign the car    
                                gp.car = gpcar;
                            }
                        }
                    }        
                } else if(attr == 'kids') { //this is array of values
                    List<String> kids = new List<String>();
                    //do another while
                    while(parser.nextToken() != JSONToken.END_ARRAY) {
                        kids.add(parser.getText());
                    }
                    gp.kids = kids;
                }
            }
        }
        gpList.add(gp);            
    }
    return gpList;   
   }  
}