java selenium null pointer -

i not sure how solve null pointer exception. thought page properties not found page gets loaded causing this. if 1 kindly point out helpful. in advance.

code:

import org.openqa.selenium.by; import org.openqa.selenium.webdriver; import org.openqa.selenium.webelement; import org.openqa.selenium.chrome.chromedriver;  public class flight {      public static webdriver driver;      //this following section browser , getting url     public static webdriver browser(){           system.setproperty("webdriver.chrome.driver", "c:\\users\\chq-sheikhr\\downloads\\eclipse\\chromedriver.exe");         webdriver driver= new chromedriver();          driver.get("https://www.orbitz.com/flights");         return driver;      }      //this following section getting properties of page       public static void  getpageproperties(string ff,string ft, string fd, string rd){          //flight f= new flight(); -- thought getting null pointer because properties not found         //f.browser();   -- putting them here how these webelements found , null pointer issue solved no         webelement flyfrom= driver.findelement(by.id("flight-origin"));         webelement flyto= driver.findelement(by.id("flight-destination"));         webelement flydate= driver.findelement(by.id("flight-departing"));         webelement returndate= driver.findelement(by.id("flight-returnin"));         webelement flight_search_btn= driver.findelement(by.id("search-button"));          flyfrom.sendkeys(ff);         flyto.sendkeys(ft);         flydate.sendkeys(fd);         returndate.sendkeys(rd);         flight_search_btn.click();      }       // following section have arguments provide flight search     public static void main (string [] args){          flight f= new flight();         f.browser();         f.getpageproperties("msp", "sea", "05/01/2017", "05/05/2017");      }   } 

error:

only local connections allowed. exception in thread "main" java.lang.nullpointerexception     @ flight.getpageproperties(flight.java:27)     @ flight.main(flight.java:47) 

you have change

webdriver driver= new chromedriver(); 

to

driver= new chromedriver();