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I'm trying to use PMML4S to make predictions from an imported model from sklearn. I have the model in an xml file that I am trying to load into java using pmml4s. I am trying to follow this. However, I am having issues getting it to work: specifically, "Package 'org.pmml4s.model' is declared in module with an invalid name ('pmml4s.2.10')" . I am using IntelliJ as my IDE. Please let me know if I can provide other information/code. Any help is appreciated!

Error is here:

import org.pmml4s.model.Model;

Dependencies:

    <dependencies>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-controls</artifactId>
        <version>18.0.2</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-fxml</artifactId>
        <version>18.0.2</version>
    </dependency>

    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-api</artifactId>
        <version>${junit.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-engine</artifactId>
        <version>${junit.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.pmml4s</groupId>
        <artifactId>pmml4s_2.10</artifactId>
        <version>0.9.16</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.36</version>
    </dependency>
    <dependency>
        <groupId>com.example</groupId>
        <artifactId>doctor</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>

    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-math3</artifactId>
        <version>3.6.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-text</artifactId>
        <version>1.9</version>
    </dependency>
    <dependency>
        <groupId>org.osgi</groupId>
        <artifactId>org.osgi.core</artifactId>
        <version>6.0.0</version>
    </dependency>

</dependencies>
Hamza Kamran
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1 Answers1

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You used java 9 modules in your project and imported a library which was not converted to java 9 modules. Thus Java treats this library as an automatic module and derives module name from jar name. The jar name happens to be illegal.

See:

You have 2 options:

Option 1: Dont use java9 modules

See:

Option 2: Sanitize jar name

See:

Note that you need to require the automatic module in this approach:

Lesiak
  • 22,088
  • 2
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  • I added the plugin to the pom.xml file as option 2 suggests. The error now reads, **"java: package org.pmml4s.model is not visible (package org.pmml4s.model is declared in the unnamed module, but module com.example.doctor does not read it)"** – Hamza Kamran Aug 15 '22 at 17:19
  • Have you modified your app module to read it? See updated answer – Lesiak Aug 16 '22 at 04:03