jme3-bullet-native and java 9+

[TalosDx]

When i tried launch the project with jme3, i have this error:
Caused by: java.lang.module.FindException: Automatic-Module-Name: native: Invalid module name: 'native' is not a Java identifier
Solution:
https://stackoverflow.com/questions/46501388/unable-to-derive-module-descriptor-for-auto-generated-module-names-in-java-9

Please tell me how to solve this problem? Just plug in the module directly? Or maybe the problem is not only for me?

build.gradle
https://pastebin.com/P3Y5KRP0

[Ali-RS]

JME does not support module system at the moment. You should add sourceCompatibility = 1.8 in your project if you want to use Java 9 onward.
If you wish you can go ahead and make a PR to support module system on JME :)

[TalosDx]

I do not write my project as a module and the only way to use javafx 11 and gradle is to use javafx 11 modules, but when using them java crashes the program saying that the word 'native' is already reserved and cannot be used in the jar file name.
Just change 'jme3.bullet.native' to something else, for example 'jme3.bullet.app', then java works as it should and builds the project correctly.

[tlf30]

I have personally not looked into this very much yet, but I feel like this is an issue is not just in JME, I have seen other libraries with similar issues.

The problem is that renaming a jar file of a core library will break backwards compatibility. In my opinion, this needs to be fixed in Java, not JME.

[empirephoenix]

..Wait why does this work for me? I use java11 and the native bullet and have not the same issue?

[TalosDx]

Try use javafx on your project or any module.

[empirephoenix]

Um, I do, so either eclipse does something clever in the run config, I don't know about, or there is some way this can be setup.

https://pastebin.com/bUZjdHYA

[tlf30]

So I just updated one of my jme apps which uses native bullet to jdk 11, and loaded up a javafx ui on it. I have had no issues (except for a couple annoying illegal access notifications).

[TalosDx]

Show build.gradle

[tlf30]

I'm using maven

[TalosDx]

Then show pom.xml

[tlf30]

Sorry, I was not at a computer. I cannot show the entire pom, it has come company info in it, but here are the relevant parts:

    <properties>
        <jme3_g>org.jmonkeyengine</jme3_g>
        <jme3_v>3.3.0-SNAPSHOT</jme3_v>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <dependencies>
        <!-- JME 3 Stuff -->
        <dependency>
            <groupId>${jme3_g}</groupId>
            <artifactId>jme3-core</artifactId>
            <version>${jme3_v}</version>
        </dependency>
        <dependency>
            <groupId>${jme3_g}</groupId>
            <artifactId>jme3-networking</artifactId>
            <version>${jme3_v}</version>
        </dependency>
        <dependency>
            <groupId>${jme3_g}</groupId>
            <artifactId>jme3-bullet-native</artifactId>
            <version>${jme3_v}</version>
        </dependency>
        <dependency>
            <groupId>${jme3_g}</groupId>
            <artifactId>jme3-bullet</artifactId>
            <version>${jme3_v}</version>
        </dependency>
        <dependency>
            <groupId>${jme3_g}</groupId>
            <artifactId>jme3-desktop</artifactId>
            <version>${jme3_v}</version>
        </dependency>
        <dependency>
            <groupId>${jme3_g}</groupId>
            <artifactId>jme3-lwjgl3</artifactId>
            <version>${jme3_v}</version>
        </dependency>
        <dependency>
            <groupId>${jme3_g}</groupId>
            <artifactId>jme3-niftygui</artifactId>
            <version>${jme3_v}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.simsilica/lemur -->
        <dependency>
            <groupId>com.simsilica</groupId>
            <artifactId>lemur</artifactId>
            <version>1.10.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.simsilica/lemur-proto -->
        <dependency>
            <groupId>com.simsilica</groupId>
            <artifactId>lemur-proto</artifactId>
            <version>1.9.1</version>
        </dependency>
        <dependency>
            <groupId>com.simsilica</groupId>
            <artifactId>lemur-props</artifactId>
            <version>1.0.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>27.0.1-jre</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.codehaus.groovy/groovy-all -->
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-all</artifactId>
            <version>2.5.6</version>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
            <type>jar</type>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-configuration2 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-configuration2</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.9.3</version>
        </dependency>
        <!-- Java FX JME3 UI -->
        <dependency>
            <groupId>com.jme3</groupId>
            <artifactId>jfx</artifactId>
            <version>2.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>11.0.2</version>
        </dependency>
    </dependencies>
    
    <repositories>
        <repository>
            <id>jcenter</id>
            <url>http://jcenter.bintray.com</url>
        </repository>
        <repository>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <id>bintray-javasabr-maven</id>
            <name>bintray</name>
            <url>https://dl.bintray.com/javasabr/maven</url>
        </repository>
    </repositories>
    
    <build>
        <resources>
            <resource>
                <directory>src/main/resources/assets</directory>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <release>11</release>
                    <compilerArgs>
                    </compilerArgs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.1.1</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <addDefaultImplementationEntries>
                                true
                            </addDefaultImplementationEntries>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>

I'm not doing anything special in it. I am using JavaFX11 with OpenJDK11. Bullet loads and works fine.

EDIT: I made a typo while censoring this snippet. The project uses lwjgl3.

[tlf30]

@TalosDx can we close this when we merge in #1059?
Also, in all my work with JDK11 with JME3, I still have yet to replicate the invalid module name error, can you please test the JME3-JDK11 branch and see if you still get the error.

[tlf30]

@TalosDx has your issue been resolved with master? I still have been unable to replicate your issue.

[TalosDx]

I will try this weekend, I hope everything will be fine

[stephengold]

Any updates on this issue?