java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) when using improper code with Selenium and Java

Question

For the sake of fast prototyping I have used the below Selenium Webdriver java code (in fact, it doesn't meet the best practices, but it should work anyway, despite of being non-optimal).

if (!driver.findElements(By.xpath("//div[@class='ui-lib-popup-element__close']")).isEmpty()) {
    driver.findElement(By.xpath("//div[@class='ui-lib-popup-element__close']")).click();
}

I.e. it has the same value in the findElement(). When it is put into the while loop, it throws at some loop the exceptions.

Capabilities {acceptInsecureCerts: true, browserName: firefox, browserVersion: 77.0.1, javascriptEnabled: true, moz:accessibilityChecks: false, moz:buildID: 20200602222727, moz:geckodriverVersion: 0.26.0, moz:headless: false, moz:processID: 12120, moz:profile: C:\Users\eljah32\AppData\Lo..., moz:shutdownTimeout: 60000, moz:useNonSpecCompliantPointerOrigin: false, moz:webdriverClick: true, pageLoadStrategy: normal, platform: WINDOWS, platformName: WINDOWS, platformVersion: 10.0, rotatable: false, setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify}
Session ID: 77ad55a3-7cc3-4126-a91d-f0b63c438520
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
    at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
    at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
    at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
    at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:285)
    at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:84)
    at SeleniumConfirmRNN.main(SeleniumConfirmRNN.java:122)

Selenium libraries versions:

<dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>3.141.59</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-firefox-driver -->
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-firefox-driver</artifactId>
            <version>3.141.59</version>
        </dependency>
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-support</artifactId>
            <version>3.0.1</version>
        </dependency>

So, what to do with this problem and is it a bug? That happens for FirefoxDriver.

What is your Java / JDK version? – Helping Hands Jun 17 '20 at 05:52 — Helping Hands, Jun 17 '20 at 05:52

score 1 · Accepted Answer · answered Jun 17 '20 at 06:37

This error message...

Capabilities {acceptInsecureCerts: true, browserName: firefox, browserVersion: 77.0.1, javascriptEnabled: true, moz:accessibilityChecks: false, moz:buildID: 20200602222727, moz:geckodriverVersion: 0.26.0, moz:headless: false, moz:processID: 12120, moz:profile: C:\Users\eljah32\AppData\Lo..., moz:shutdownTimeout: 60000, moz:useNonSpecCompliantPointerOrigin: false, moz:webdriverClick: true, pageLoadStrategy: normal, platform: WINDOWS, platformName: WINDOWS, platformVersion: 10.0, rotatable: false, setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify}
Session ID: 77ad55a3-7cc3-4126-a91d-f0b63c438520
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

...implies that the GeckoDriver was unable to click() on the WebElement within the Browsing Context i.e. Firefox Browser session.

There are a couple of things you need to consider as follows:

First of all, you don't invoke click() on a <div> element unless the element contains the attribute contenteditable="true".

You can find a detailed discussion in How to modify the innerHTML of a contenteditable element

Presumably, there should be a child <input> or <span> element which is your desired element within the <div> you are referring. So you need to move one step deeper to locate the interactable element inducing WebDriverWait for the elementToBeClickable() and you can use the following Locator Strategy:
```
try {
  new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//div[@class='ui-lib-popup-element__close']//input"))).click();
  System.out.println("Element was clicked");
}
catch(TimeoutException e) {
  System.out.println("Element wasn't clicked");
}
```

Reference

You can find a relevant discussion in:

sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) using findElement(By.className()) through Selenium and Java

Thank you! I believe that my code here is far from the best practices. So I was just surprised that the exception thrown is a reflection exception, not a Selenium's one. — Eljah, Jun 17 '20 at 06:50

java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) when using improper code with Selenium and Java

1 Answers1

Reference

Related