example does not run

[tve]

I'm trying to run the example on Ubuntu 16.04 x64 and I get:

> mvn -q exec:java -e -Dexec.mainClass=com.tdunning.sparse.Learn
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (default-cli) on project AnomalyDetector: An exception occured while executing the Java class. com.tdunning.sparse.Learn -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (default-cli) on project AnomalyDetector: An exception occured while executing the Java class. com.tdunning.sparse.Learn
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
        at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)

I have openjdk-9 installed. Any hints? (I'm not a Java user...)

[tve]

Looks like it's class search path issue:

[DEBUG] joining on thread Thread[com.tdunning.sparse.Learn.main(),5,com.tdunning.sparse.Learn]
[WARNING]
java.lang.ClassNotFoundException: com.tdunning.sparse.Learn
        at java.net.URLClassLoader.findClass(java.base@9-internal/URLClassLoader.java:384)

[tve]

Trying to unravel all this maven stuff (yes, I'm not a Java programmer):

> mvn install exec:java
[...]
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (default-cli) on project AnomalyDetector: The parameters 'mainClass' for goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java are missing or invalid -> [Help 1]

[tdunning]

Yeah. That is odd. Let me get back to my computer and take a look. At dinner now. The Java 9 thought is possible. It could be Maven versioning or something else as well like install issues in your environment. Or I could have screwed up. Hard to say until I look.

…

On May 26, 2017 6:56 PM, "Thorsten von Eicken" ***@***.***> wrote: Trying to unravel all this maven stuff (yes, I'm not a Java programmer): > mvn install exec:java [...] [ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (default-cli) on project AnomalyDetector: The parameters 'mainClass' for goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java are missing or invalid -> [Help 1] — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#2 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAPSejE8rB_zcqGY6F8jCrwetCnJcuN6ks5r9xJFgaJpZM4Nn2-d> .