Testing dependencies - java.lang.ClassNotFoundException: com.yammer.dropwizard.json.Json

[Sri Gogineni]

Hi,

I'm using IntelliJ and maven for a project. It was working fine but now that I've added tests I get the error below. Goolge-ing and searching this group have yielded no results. Does anyone have any ideas?

java.lang.NoClassDefFoundError: com/yammer/dropwizard/json/Json

at java.lang.Class.getDeclaredMethods0(Native Method)

at java.lang.Class.privateGetDeclaredMethods(Class.java:2475)

at java.lang.Class.getDeclaredMethods(Class.java:1818)

at org.junit.runners.model.TestClass.<init>(TestClass.java:38)

at org.junit.runners.ParentRunner.<init>(ParentRunner.java:65)

at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:59)

at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:13)

at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)

at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)

at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)

at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:93)

at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:84)

at com.intellij.junit4.JUnit46ClassesRequestBuilder.collectWrappedRunners(JUnit46ClassesRequestBuilder.java:69)

at com.intellij.junit4.JUnit46ClassesRequestBuilder.getClassesRequest(JUnit46ClassesRequestBuilder.java:40)

at com.intellij.junit4.JUnit4TestRunnerUtil.buildRequest(JUnit4TestRunnerUtil.java:82)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)

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

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

Caused by: java.lang.ClassNotFoundException: com.yammer.dropwizard.json.Json

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)

... 23 more

Best,

Sri

[Jeremy Levy]

Are you sure all references to DW in your pom.xml are referencing the correct version of dropwizard (0.6.2)?

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[Sri Gogineni]

Thanks! That was exactly the issue! I accidentally specified 0.4.1 for dropwizard-testing.

--- pom.xml ---

    <properties>

        ...

        <encoding>UTF-8</encoding>

        <dropwizard.version>0.6.2</dropwizard.version>

        <dropwizard-testing.version>0.4.1</dropwizard-testing.version>

        ...

    </properties>

    <dependency>

            <groupId>com.yammer.dropwizard</groupId>

            <artifactId>dropwizard-core</artifactId>

            <version>${dropwizard.version}</version>

        </dependency>

        <dependency>

            <groupId>com.yammer.dropwizard</groupId>

            <artifactId>dropwizard-db</artifactId>

            <version>${dropwizard.version}</version>

        </dependency>

        <dependency>

            <groupId>com.yammer.dropwizard</groupId>

            <artifactId>dropwizard-jdbi</artifactId>

            <version>${dropwizard.version}</version>

        </dependency>

    <dependency>

            <groupId>com.yammer.dropwizard</groupId>

            <artifactId>dropwizard-testing</artifactId>

            <version>${dropwizard-testing.version}</version>

            <scope>test</scope>

        </dependency>

Best,

Sri