What is "java.lang.NoSuchMethodError: org.neo4j.kernel.impl.util.ArrayMap.<init>(BZZ)V" when I call newEmbeddedDatabase ?

[Bill Nicholson]

import java.io.File;  
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;   

public class testMain {

    public static void main(String[] args) {
        File x = new File("c:/temp/foo");
        //      GraphDatabaseService graphDb = new GraphDatabaseFactory().newEmbeddedDatabase( "c:/temp/foo" );
        GraphDatabaseService graphDb = new GraphDatabaseFactory().newEmbeddedDatabase( x );

    }
}


Exception in thread "main" java.lang.NoSuchMethodError: org.neo4j.kernel.impl.util.ArrayMap.<init>(BZZ)V
    at org.neo4j.kernel.impl.locking.community.RagManager.<init>(RagManager.java:72)
    at org.neo4j.kernel.impl.locking.community.CommunityLockManger.<init>(CommunityLockManger.java:34)
    at org.neo4j.kernel.impl.factory.CommunityEditionModule.createLockManager(CommunityEditionModule.java:247)
    at org.neo4j.kernel.impl.factory.CommunityEditionModule.<init>(CommunityEditionModule.java:104)
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(GraphDatabaseFacadeFactory.java:157)
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:124)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory.newDatabase(GraphDatabaseFactory.java:133)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(GraphDatabaseFactory.java:126)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:101)
    at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:193)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(GraphDatabaseFactory.java:70)
    at testMain.main(testMain.java:14)

[Chris Vest]

Make sure all your Neo4j dependencies are using the same version.

--
Chris Vest
System Engineer, Neo Technology

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[Bill Nicholson]

How, exactly?

[Bill Nicholson]

This is what I have:

On Sunday, May 14, 2017 at 3:49:23 PM UTC-4, Chris Vest wrote:

[Michael Hunger]

Best use a build too like maven / gradle and add org.neo4j:neo4j:3.2.0 as a dependency.
It will pull all required dependencies for you.

> Am 14.05.2017 um 22:23 schrieb Bill Nicholson <delmerwilli...@gmail.com>:
>
> This is what I have:
>

> <Auto Generated Inline Image 1.png>

> <Auto Generated Inline Image 1.png>

[T L Andrews]

Hi - I am having a very similar problem, for which StackOverflow has no answer, after upgrading from version 2.2.10 in my project.

java.lang.NoSuchMethodError: org.neo4j.helpers.collection.Iterables.toList(Ljava/lang/Iterable;)Ljava/util/List;
 at org.neo4j.graphdb.factory.GraphDatabaseFactoryState.<init>(GraphDatabaseFactoryState.java:51)
 at org.neo4j.graphdb.factory.GraphDatabaseFactory.<init>(GraphDatabaseFactory.java:47)
 at net.stemmaweb.services.GraphDatabaseServiceProvider.<init>(GraphDatabaseServiceProvider.java:27)

I'm managing dependencies with Maven so it's difficult to see where version conflict could be arising. Just to be sure I cleared out the local repository and had maven re-download everything.

Relevant part of POM: 

        <!--  The following is used for the database Neo4J, including tests Neo4J -->
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j</artifactId>
            <version>${neo4j-version}</version>
        </dependency>
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j-kernel</artifactId>
            <version>${neo4j-version}</version>
            <type>test-jar</type>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j-io</artifactId>
            <version>${neo4j-version}</version>
            <type>test-jar</type>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j-shell</artifactId>
            <version>${neo4j-version}</version>
        </dependency>
<!-- ... -->
        <neo4j-version>3.2.3</neo4j-version>

Any further clues would be *greatly* appreciated.

[Michael Hunger]

Can you share "mvn dependency:tree"

to see where you have a version conflict?

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[Tara Andrews]

Sure - here you are. https://pastebin.com/kh7tuRh9

For what it's worth, I was able to get the application running without error on another (Mac) computer yesterday evening, identical in environment except that the version of Tomcat in use is slightly older.

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[Michael Hunger]

This looks almost ok to me (this one is a bit weird: neo4j-graph-matching)

Perhaps some other /old libs remaining somewhere on the classpath?

You can set the JVM parameter: -verbose:class to see where classes are loaded from written to the logs.

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[T L Andrews]

Aha - it turns out that when IntelliJ rebuilds .war files and their exploded counterparts, it doesn't clear out the previous target. There were indeed a lot of older .jar files lurking there. Thanks for pointing me in the right direction!

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