Can't using PageFactory

[Nhân Vương]

I can't using PageFactory this case:

Class xxxLoginPage:

public class xxxLoginPage extends usingDriver{

public WebDriver driver;

public usingObjectLoginPage usingObjectLogin = new usingObjectLoginPage(driver);

  @Test

  public void LoginPass(){

 usingObjectLogin.LoginPass("nhanvh", "111111");

  }

  @Test

  public void LoginFail() {

 System.out.println(xxxCommons.URL_CHROME_DRIVE);

  }

  @BeforeTest

  public void beforeTest() {

 getURL(driver,xxxCommons.URL_CHROME_DRIVE, xxxCommons.URL_MUV_PAGE);

//  usingObjectLogin = new usingObjectLoginPage(driver);

  }

  @AfterTest

  public void afterTest() {

 

  }

}

Class usingObjectLoginPage :

public class usingObjectLoginPage {

public WebDriver driver;

public ObjectLoginPage ObjLogin;

public usingObjectLoginPage(WebDriver driver){

this.driver = driver;

ObjLogin = PageFactory.initElements(driver, ObjectLoginPage.class);

}

public void LoginPass(String username, String password){

xxxActions.setValue(ObjLogin.txtUser, username);

xxxActions.setValue(ObjLogin.txtPass, password);

xxxActions.doClick(ObjLogin.btnLogin);

}

}

Class C:

public class xxxActions {

public static void getValue(WebElement element) {

element.getText();

}

public static void setValue(WebElement element, String txt) {

element.sendKeys(txt);

}

public static void doClick(WebElement element) {

element.click();

}

}

I run it and occur error at LoginPass

In console have notification bellow:

PASSED: LoginFail

FAILED: LoginPass

java.lang.NullPointerException

at org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69)

at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38)

at com.sun.proxy.$Proxy7.sendKeys(Unknown Source)

at com.xxx.common.xxxActions.setValue(muvActions.java:11)

at com.xxx.utility.usingObjectLoginPage.LoginPass(usingObjectLoginPage.java:19)

at com.xxx.feature.muvLoginPage.LoginPass(muvLoginPage.java:18)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:100)

at org.testng.internal.Invoker.invokeMethod(Invoker.java:646)

at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:811)

at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1137)

at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)

at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)

at org.testng.TestRunner.privateRun(TestRunner.java:753)

at org.testng.TestRunner.run(TestRunner.java:607)

Please help me :(