Before asking a question, let me just say that I am completely new to DL4J, maven and java, so please bear your stupid question.
I try to install dl4j examples using the mvn clean install command, but I get the following error:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile) on project datavec-examples: Fatal error compiling: java.lang.NoClassDefFoundError: com/sun/tools/javac/file/BaseFileObject: com.sun.tools.javac.file.BaseFileObject -> [Help 1]
Now, what I don't understand, am I getting this error due to java or maven?
Full stack error:
[ERROR] No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [Help 1] org.apache.maven.lifecycle.NoGoalSpecifiedException: No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:97) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194) at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107) at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955) at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290) at org.apache.maven.cli.MavenCli.main (MavenCli.java:194) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:564) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356) [ERROR] [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/NoGoalSpecifiedException
I am running the following versions of java and maven on Windows 10 (64 bit)
Picked up _JAVA_OPTIONS: -Xmx512M java version "9.0.4" Java(TM) SE Runtime Environment (build 9.0.4+11) Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode) Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T12:58:13+05:00) Maven home: C:\apache-maven-3.5.2-bin\apache-maven-3.5.2 Java version: 9.0.4, vendor: Oracle Corporation Java home: C:\Progra~1\Java\jdk-9.0.4 Default locale: en_US, platform encoding: Cp1252 OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"
Here is a screenshot for environment variables:
