Can't process class [module-info.class] (Unsupported version number [67.0] (maximum 65.65535, Java null))

[kyxhik]

Hello, I am trying to obfuscate my maven project. Below is the section that I added proguard to my pom.xml

`
com.github.wvengen
proguard-maven-plugin

            <executions>
               <execution>
                   <phase>package</phase>
                   <goals><goal>proguard</goal></goals>
               </execution>
            </executions>
            <configuration>
                <obfuscate>true</obfuscate>
                <injar>${project.build.finalName}.jar</injar>
                <outjar>${project.build.finalName}-final.jar</outjar>
                <inLibFilter>!module-info.class</inLibFilter>
                <outputDirectory>${project.build.directory}</outputDirectory>
                <proguardInclude>${basedir}/proguard.conf</proguardInclude>
                <libs>
					
				    <lib>${java.home}/jmods/java.base.jmod</lib>
				    <lib>${java.home}/jmods/java.logging.jmod</lib>
				    <lib>${java.home}/jmods/java.sql.jmod</lib>
				  </libs>
                <options>
                   
                    <option>
						

                        -keep class org.cytoscape.CytoCopasi.CyActivator
                        
                    </option>
                   
                </options>
            </configuration>
        </plugin>`

But I am getting the error: Can't process class [module-info.class] (Unsupported version number [67.0] (maximum 65.65535, Java null))

When I try to exclude module-info.class as follows: ${java.home}/jmods/java.base.jmod(!**.jar;!module-info.class) in lib, it perceives that as the full file path.

I also tried the following : !module-info.class, but to no avail.

I am not sure what I am missing. Could you please assist?

using proguard version 7.4.1
java version is jdk-23

Thanks in advance

[lasselindqvist]

You need to make sure you use Proguard that supports the Java version your class files use. What are the supported Java class file versions for 7.4.1?

[mickaelBree]

I've encountered the same error by building my app with java 22. It seems the Proguard version which is used in the 2.6.2-SNAPSHOT of this maven plugin would solved the issue.

Any ideas when it will be release ?

Thanks a lot.

[lasselindqvist]

You can use whatever Proguard you wish by changing the dependencies of the plugin in your pom.xml. So no need to wait for the plugin releases.