I downloaded eclipse photon and tried to run very basic example with log4j2. Here is my configuration
Project structure
Here is the module path screen shot
POM.xml
<properties>
<java-version>10</java-version>
<!-- Unit testing -->
<junit.version>4.12</junit.version>
<junit-jupiter-engine.version>5.2.0</junit-jupiter-engine.version>
<junit-platform-runner.version>1.2.0</junit-platform-runner.version>
<!-- Logging -->
<log4j.version>2.11.0</log4j.version>
<slf4j-api.verion>1.7.25</slf4j-api.verion>
<jboss-logging.version>3.3.2.Final</jboss-logging.version>
<maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
<maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
<exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
<maven-failsafe-plugin.version>2.21.0</maven-failsafe-plugin.version>
<maven-javadoc-plugin.version>3.0.0</maven-javadoc-plugin.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<!-- Unit Testing -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit-jupiter-engine.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit-platform-runner.version}</version>
<scope>test</scope>
</dependency>
<!-- Logging-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-jcl</artifactId>
<version>${log4j.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>${log4j.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-jul</artifactId>
<version>${log4j.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j-api.verion}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.jboss.logging</groupId>
<artifactId>jboss-logging</artifactId>
<version>${jboss-logging.version}</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<finalName>${project.artifactId}</finalName>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<versionRange>[1.0.0,)</versionRange>
<goals>
<goal>enforce</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${java-version}</source>
<target>${java-version}</target>
<compilerArgument>-Xlint:all</compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>${maven-failsafe-plugin.version}</version>
<executions>
<execution>
<id>integration-test</id>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>${maven-javadoc-plugin.version}</version>
<configuration>
<additionalparam>-Xdoclint:none</additionalparam>
</configuration>
</plugin>
</plugins>
</build>
Main Class
package pk.training.basit;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
public class Welcome {
private static final Logger logger = LogManager.getLogger();
public static void main(String[] args) {
logger.info("Welcome to the Module System.");
// Print the module name of the Welcome class
Class<Welcome> cls = Welcome.class;
Module mod = cls.getModule();
String moduleName = mod.getName();
System.out.format("Module Name: %s%n", moduleName);
}
}
module-info
module pk.training.basit {
exports pk.training.basit;
requires log4j.api;
}
But when I run the project I am getting error that
Error occurred during initialization of boot layer
java.lang.module.FindException: Module log4j.api not found, required by pk.training.basit
Why I am getting this error? Dependencies are in the module path.
If I remove the log4j2 from the code and then run the code with the following module-info:
module pk.training.basit {
exports pk.training.basit;
}
Then code runs fine.
So is there something that I am doing wrong or it's maven eclipse related problem that it can't find third party dependencies?
Thanks
