ClassNotFoundException when using initializing Appiumdriver

[Build Jenkins]

Hi, 

I'm new to this so please bear with me.

I'm trying to run Appium on Java. I have the server running on the Appium UI Version 1.1.0 (Cygnus) - the inspector and the iOS simulator works fine.

When i try to run my java tests, the simulator launches correctly and the app is loaded.

However, when moving on to the actual tests, i get the following error on the console:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/gson/JsonParser

at io.appium.java_client.ComplexFind.<clinit>(ComplexFind.java:16)

at io.appium.java_client.AppiumDriver.<init>(AppiumDriver.java:46)

at com.newtest.Test1.main(Test1.java:23)

Caused by: java.lang.ClassNotFoundException: com.google.gson.JsonParser

at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

... 3 more

Line 23 is where:  AppiumDriver wd = new AppiumDriver(new URL("http://0.0.0.0:4723/wd/hub"), capabilities);

I have linked the selenium jar files and the Appium Java client with the project already.

Could anyone kindly help? Please.

[Vinu Joseph]

Hi,

It looks like your .java files have not been compiled.

Use command prompt and go to the .java file(Eg. test.java) location which you want to run.

run 'javac test.java'

After compiling your .java files try to run your testcase. It should be able to run.

[Build Jenkins]

Hi Vinu,

I'm writing the test using Eclipse and have already linked the .jar files necessary.

[Build Jenkins]

I've managed to solve this by using

WebDriver wd = new RemoteWebDriver;
Instead of
AppiumDriver wd = new AppiumDriver;

And of course importing

import org.openqa.selenium.WebDriver;
instead of
import io.appium.java_client.AppiumDriver;

Does this impact the appium functionality?
What differences are there, if any?

[http://thebuddhatree.blogspot.in/]

Technically speaking No. Actually, AppiumDriver extends RemoteWebDriver

[Build Jenkins]

Alright, thanks for the info.

Any idea why it fails when I use AppiumDriver?
T.T

[Sravan Kumar]

Hi ,

Adding gson.jar to classpath will solve your problem, which does to me.

[Build Jenkins]

YOU'RE RIGHT!!
Thanks a ton Sravan.

Man, did I miss it or is this not documented?

[Isaac Murchie]

It should be automatically installed if you're using Maven. See https://github.com/appium/java-client/blob/master/pom.xml#L11

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