Cannot Instantiate Class error Selenium Testng Maven

Question

package com.qa.easy.testbase;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.util.Properties;
    import org.openqa.selenium.WebDriver;
    import org.openqa.selenium.chrome.ChromeDriver;
    import org.openqa.selenium.firefox.FirefoxDriver;
    import org.openqa.selenium.support.events.EventFiringWebDriver;
    import com.qa.easy.testutil.WebEventListener;
    public class TestBase { 
    public static WebDriver driver;
    public static Properties prop;
    public static EventFiringWebDriver e_driver;
    public static WebEventListener eventListener;
    public TestBase(){
    try {
    prop = new Properties();
    FileInputStream ip = new FileInputStream(System.getProperty("F:\\Azar\\SeleniumMaven_Git_Jenkins"
    + "\\src\\main\\java\\com\\qa\\easy\\config\\config.properties"));
    prop.load(ip);
    } catch (FileNotFoundException e) {
    e.printStackTrace();
    } catch (IOException e) {
    e.printStackTrace();
    }
    }
    public static void initialization(){
    String browserName = prop.getProperty("browser");
    if(browserName.equals("chrome")){
    System.setProperty("webdriver.chrome.driver","F:\\Installation\\chromedriver.exe"); 
    driver = new ChromeDriver(); 
    }
    e_driver = new EventFiringWebDriver(driver);
    // Now create object of EventListerHandler to register it with EventFiringWebDriver
    eventListener = new WebEventListener();
    e_driver.register(eventListener);
    driver = e_driver;
    driver.manage().window().maximize();
    driver.manage().deleteAllCookies();
    driver.get(prop.getProperty("url"));
    }
    }
**My Page Class:**


package com.qa.easy.pages;
    import org.openqa.selenium.WebElement;
    import org.openqa.selenium.support.FindBy;
    import org.openqa.selenium.support.PageFactory;
    import com.qa.easy.testbase.TestBase;
    public class Demopage extends TestBase {
    @FindBy(className="cbt")
    WebElement CBTImage;
    @FindBy(className="round-tabs four")
    WebElement advanced;
    @FindBy(xpath="//a[contains(text(),'Table Sort & Search')]")
    WebElement tablesearch;
    @FindBy(xpath="//input[@type='search']")
    WebElement searchbox;
    @FindBy(xpath="//table[@id='example']//tbody")
    WebElement searchresults;
    public Demopage() {
    PageFactory.initElements(driver, this);
    }
    public boolean CBTImage() {
    return CBTImage.isDisplayed();
    }
    }
    **My Test class:**
    package com.qa.easy.testcases;
    import java.io.IOException;
    import org.testng.Assert;
    import org.testng.annotations.AfterMethod;
    import org.testng.annotations.BeforeMethod;
    import org.testng.annotations.Test;
    import com.qa.easy.pages.Demopage;
    import com.qa.easy.testbase.TestBase;
    public class Demotest extends TestBase{
    Demopage demopage;
    public Demotest() throws IOException {
    super();        
    }
    @BeforeMethod
    public void setUp(){
    initialization();
    demopage = new Demopage();  
    }
    @Test
    public void cbtLogo(){
    boolean flag = demopage.CBTImage();
    Assert.assertTrue(flag);
    }
    @AfterMethod
    public void tearDown(){
    driver.quit();
    }
    }
Actual Result now:
[RemoteTestNG] detected TestNG version 6.14.3
org.testng.TestNGException: 
Cannot instantiate class com.qa.easy.testcases.Demotest
    at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:30)
    at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:423)
    at org.testng.internal.ClassHelper.createInstance(ClassHelper.java:336)
    at org.testng.internal.ClassImpl.getDefaultInstance(ClassImpl.java:125)
    at org.testng.internal.ClassImpl.getInstances(ClassImpl.java:190)
    at org.testng.TestClass.getInstances(TestClass.java:95)
    at org.testng.TestClass.initTestClassesAndInstances(TestClass.java:81)
    at org.testng.TestClass.init(TestClass.java:73)
    at org.testng.TestClass.<init>(TestClass.java:38)
    at org.testng.TestRunner.initMethods(TestRunner.java:389)
    at org.testng.TestRunner.init(TestRunner.java:271)
    at org.testng.TestRunner.init(TestRunner.java:241)
    at org.testng.TestRunner.<init>(TestRunner.java:192)
    at org.testng.remote.support.RemoteTestNG6_12$1.newTestRunner(RemoteTestNG6_12.java:33)
    at org.testng.remote.support.RemoteTestNG6_12$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_12.java:66)
    at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:713)
    at org.testng.SuiteRunner.init(SuiteRunner.java:260)
    at org.testng.SuiteRunner.<init>(SuiteRunner.java:198)
    at org.testng.TestNG.createSuiteRunner(TestNG.java:1295)
    at org.testng.TestNG.createSuiteRunners(TestNG.java:1273)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1128)
    at org.testng.TestNG.runSuites(TestNG.java:1049)
    at org.testng.TestNG.run(TestNG.java:1017)
    at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:24)
    ... 25 more
Caused by: java.lang.NullPointerException
    at java.io.FileInputStream.<init>(FileInputStream.java:130)
    at java.io.FileInputStream.<init>(FileInputStream.java:93)
    at com.qa.easy.testbase.Basetest.<init>(Basetest.java:23)
    at com.qa.easy.testcases.Demotest.<init>(Demotest.java:21)
    ... 30 more

João Farias · Accepted Answer · 2019-07-17 09:04:16Z

0

Caused by: java.lang.NullPointerException
    at java.io.FileInputStream.<init>(FileInputStream.java:130)
    at java.io.FileInputStream.<init>(FileInputStream.java:93)
    at com.qa.easy.testbase.Basetest.<init>(Basetest.java:23)
    at com.qa.easy.testcases.Demotest.<init>(Demotest.java:21)

Which means that you the following line returns a null.

System.getProperty("F:\\Azar\\SeleniumMaven_Git_Jenkins"
    + "\\src\\main\\java\\com\\qa\\easy\\config\\config.properties")

answered Jul 17 '19 at 9:04

João Farias

8,6371 gold badge11 silver badges33 bronze badges

Thanks Joao... But my properties file is exactly in that location. Any advice to fix this or find if it's returning null value ? – user40473 Jul 17 '19 at 10:05
1

Are you sure the command doesn't return null? System.getProperty expects the name of a property (os.name, e.g.) not a path to a property file. Can you add a break point and check the result of this command specifically at this point? – João Farias Jul 17 '19 at 10:40
When I updated the line as FileInputStream inp = new FileInputStream("F:\\Azar\\SeleniumMaven_Git_Jenkins\\src\\main\\resources\\com\\qa\\easy\\config\\config.properties"); The error is java.io.FileNotFoundException. But I'm able to find this file in the same location in my drive. any issues with access settings ? – user40473 Jul 17 '19 at 11:07
1

Thanks Joao.... I found the issue. prop.load(ip); where the issue was. instead of Inputstream method I changed it to Reader method and it is working fine now. – user40473 Jul 17 '19 at 11:20
This issue may have different causes, since it's highly coupled to the state of your file system. I would try out using the user.dir property as prefix to the path. Check this answer (and others on the same link) for more information stackoverflow.com/a/56092473/2252076 – João Farias Jul 17 '19 at 11:23

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