Hi, I opted for the third solution. But I still need your help.
Here is the error I am getting when I execute my final jar: java -jar target/my-app-1.0-SNAPSHOT-jar-with-dependencies.jar SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. Exception in thread "main" java.lang.ExceptionInInitializerError at com.mycompany.app.RdfWriter.main(RdfWriter.java:13) Caused by: java.lang.NullPointerException at org.apache.jena.tdb.sys.EnvTDB.processGlobalSystemProperties(EnvTDB.java:33) at org.apache.jena.tdb.TDB.init(TDB.java:248) at org.apache.jena.tdb.sys.InitTDB.start(InitTDB.java:29) at org.apache.jena.system.JenaSystem.lambda$init$2(JenaSystem.java:119) at java.util.ArrayList.forEach(ArrayList.java:1249) at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:194) at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:171) at org.apache.jena.system.JenaSystem.init(JenaSystem.java:117) at org.apache.jena.rdf.model.ModelFactory.<clinit>(ModelFactory.java:49) ... 1 more I am using maven-assembly-plugin to include all dependencies in the final jar. Before running the jar I used these 2 commans (successfully) after removing everything from my .m2 folder: mvn clean install mvn clean compile assembly:single And then I run this command that gives me the error above: java -jar target/my-app-1.0-SNAPSHOT-jar-with-dependencies.jar Thank you On Sun, Jan 29, 2017 at 4:46 AM, Lorenz B. < [email protected]> wrote: > That doesn't work because only your own classes are in the classpath then. > > Options: > > 1) Add all necessary JAR files from the Jena distribution to the classpath > 2) Use the Maven exec plugin from the command line > 3) build a fat JAR that also contains the classes of the Maven dependencies > > Hi, > > > > I am trying to do the first example of the jena rdf tutorial. > > It seems that the class is not found even the maven build was successful. > > > > Here is my class code: > > > > package com.mycompany.app; > > > > import org.apache.jena.rdf.model.*; > > import org.apache.jena.vocabulary.*; > > > > public class RdfWriter { > > static String personURI = "http://somewhere/JohnSmith";; > > static String fullName = "John Smith"; > > > > public static void main(String[] args) { > > // // create an empty model > > Model model = ModelFactory.createDefaultModel(); > > // // create the resource > > // Resource johnSmith = model.createResource(personURI); > > // // add the property > > // johnSmith.addProperty(VCARD.FN, fullName); > > System.out.println("this is rdf writer"); > > } > > > > } > > > > I am running it like this: > > > > java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.RdfWriter > > > > And here is my pom file: > > > > <project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" > > http://www.w3.org/2001/XMLSchema-instance"; > > xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 > > http://maven.apache.org/maven-v4_0_0.xsd";> > > <modelVersion>4.0.0</modelVersion> > > <groupId>com.mycompany.app</groupId> > > <artifactId>my-app</artifactId> > > <packaging>jar</packaging> > > <version>1.0-SNAPSHOT</version> > > <name>my-app</name> > > <url>http://maven.apache.org</url> > > > > <properties> > > <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> > > </properties> > > > > <dependencies> > > <dependency> > > <groupId>junit</groupId> > > <artifactId>junit</artifactId> > > <version>3.8.1</version> > > <scope>test</scope> > > </dependency> > > <dependency> > > <groupId>org.apache.jena</groupId> > > <artifactId>apache-jena-libs</artifactId> > > <version>3.1.1</version> > > <type>pom</type> > > </dependency> > > </dependencies> > > </project> > > > > Here is the full error that I get: > > Exception in thread "main" java.lang.NoClassDefFoundError: > > org/apache/jena/rdf/model/ModelFactory > > at com.mycompany.app.RdfWriter.main(RdfWriter.java:13) > > Caused by: java.lang.ClassNotFoundException: > > org.apache.jena.rdf.model.ModelFactory > > at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) > > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > > ... 1 more > > > -- > Lorenz Bühmann > AKSW group, University of Leipzig > Group: http://aksw.org - semantic web research center > >
