NoSuchFieldError: INSTANCE error while running Phantomjs

[jh]

I'm trying to run phantomjs in the main class, but I kept getting this error of java.lang.NoSuchFieldError: INSTANCE when the location of the phantomjs.exe is in the correct path. What could the problem be and how can I solve it?

Code 
      String p = System.getProperty("user.dir");
        String imPath = p + "\\ImageMagick-6.9.3-1-portable-Q16-x64";
               
        ProcessStarter.setGlobalSearchPath(imPath);
       
        // create command
        ConvertCmd cmd = new ConvertCmd();       
        cmd.setSearchPath(imPath);
       
        String url = "https://www.twitter.com/";
               
        // Start the headless browser
        DesiredCapabilities dc = new DesiredCapabilities();
        ((DesiredCapabilities) dc).setJavascriptEnabled(true);
        ((DesiredCapabilities) dc).setCapability("takesScreenshot", true);
        ((DesiredCapabilities) dc).setCapability(
                PhantomJSDriverService.PHANTOMJS_EXECUTABLE_PATH_PROPERTY,
                p + "\\driver\\phantomjs.exe"
        );
        WebDriver driver = new PhantomJSDriver(dc);
          


Error
run:
Jan 25, 2016 11:04:48 AM org.openqa.selenium.phantomjs.PhantomJSDriverService <init>
INFO: executable: C:\Users\janice\Documents\NetBeansProjects\Project\driver\phantomjs.exe
Jan 25, 2016 11:04:48 AM org.openqa.selenium.phantomjs.PhantomJSDriverService <init>
INFO: port: 34102
Jan 25, 2016 11:04:48 AM org.openqa.selenium.phantomjs.PhantomJSDriverService <init>
INFO: arguments: [--webdriver=34102, --webdriver-logfile=C:\Users\janice\Documents\NetBeansProjects\Project\phantomjsdriver.log]
Jan 25, 2016 11:04:48 AM org.openqa.selenium.phantomjs.PhantomJSDriverService <init>
INFO: environment: {}
Exception in thread "main" java.lang.NoSuchFieldError: INSTANCE
    at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:52)
    at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:56)
    at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<clinit>(DefaultHttpRequestWriterFactory.java:46)
    at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<init>(ManagedHttpClientConnectionFactory.java:82)
    at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<init>(ManagedHttpClientConnectionFactory.java:95)
    at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<init>(ManagedHttpClientConnectionFactory.java:104)
    at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<clinit>(ManagedHttpClientConnectionFactory.java:62)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager$InternalConnectionFactory.<init>(PoolingHttpClientConnectionManager.java:572)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:174)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:158)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:149)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:125)
    at org.openqa.selenium.remote.internal.HttpClientFactory.getClientConnectionManager(HttpClientFactory.java:74)
    at org.openqa.selenium.remote.internal.HttpClientFactory.<init>(HttpClientFactory.java:57)
    at org.openqa.selenium.remote.internal.HttpClientFactory.<init>(HttpClientFactory.java:60)
    at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.getDefaultHttpClientFactory(ApacheHttpClient.java:251)
    at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.<init>(ApacheHttpClient.java:228)
    at org.openqa.selenium.remote.HttpCommandExecutor.getDefaultClientFactory(HttpCommandExecutor.java:89)
    at org.openqa.selenium.remote.HttpCommandExecutor.<init>(HttpCommandExecutor.java:63)
    at org.openqa.selenium.phantomjs.PhantomJSCommandExecutor.<init>(PhantomJSCommandExecutor.java:62)
    at org.openqa.selenium.phantomjs.PhantomJSDriver.<init>(PhantomJSDriver.java:115)
    at org.openqa.selenium.phantomjs.PhantomJSDriver.<init>(PhantomJSDriver.java:104)
    at gov.spf.project.update.Im4Test.main(Im4Test.java:49)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)

[Krishnan Mahadevan]

Janice,

The problem is due to a messed up CLASSPATH.

This line http://grepcode.com/file/repo1.maven.org/maven2/com.groupbyinc/common-http/25/org/apache/http/impl/io/DefaultHttpRequestWriterFactory.java#52 makes a reference to this data member [ http://grepcode.com/file/repo1.maven.org/maven2/com.groupbyinc/common-http/25/org/apache/http/message/BasicLineFormatter.java?av=f#65 ]

Something in your CLASSPATH is basically causing this mess up

See if adding the following helps you [ am assuming that you are using Maven ]

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpcore</artifactId>
    <version>4.4.1</version>
</dependency>
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.4.1</version>
</dependency>

You can get more context around a similar problem by going through this thread : http://stackoverflow.com/questions/21864521/java-lang-nosuchfielderror-org-apache-http-message-basiclineformatter-instance [Its not the exact same context, but it should give you a lot of ideas on how to go about deciphering this on your own ]

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribbings @ http://rationaleemotions.wordpress.com/

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[jh]

Hi Krishnan,

Thank you for your reply. However, I am not using maven in this case. May I know what do you exactly mean by a messed up classpath?

Janice

[Krishnan Mahadevan]

So what are you using to have your Java code resolve classes ?

Are you using any build tool such as Gradle/ANT/[Maven you said you arent ]

Or are you just adding classes to your classpath through your IDE and then working with them ?

If yes, then I would suggest that you please get yourself oriented with a build tool such as Maven and then use it.

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribbings @ http://rationaleemotions.wordpress.com/

To view this discussion on the web visit https://groups.google.com/d/msgid/selenium-users/02c8c428-0adb-4f7e-a8de-532b7baa1be8%40googlegroups.com.