pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.pdf.signature.overlay</groupId>
    <artifactId>OverlaySignaturePDF</artifactId>
    <packaging>jar</packaging>
    <version>2.1.0</version>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>info.picocli</groupId>
            <artifactId>picocli</artifactId>
            <version>4.6.2</version>
        </dependency>
        <dependency>
<!--            <groupId>org.apache.pdfbox</groupId>-->
<!--            <artifactId>pdfbox</artifactId>-->
<!--            <version>3.0.0-RC1</version>-->
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
            <version>2.0.24</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.9</version>
        </dependency>
    </dependencies>

    <build>
            <plugins>
                <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.8.1</version>
                    <!-- annotationProcessorPaths requires maven-compiler-plugin version 3.5 or higher -->
                 <configuration>
                        <annotationProcessorPaths>
                         <path>
                            <groupId>info.picocli</groupId>
                            <artifactId>picocli-codegen</artifactId>
                               <version>4.6.2</version>
                            </path>
                        </annotationProcessorPaths>
                        <compilerArgs>
                         <arg>-Aproject=${project.groupId}/${project.artifactId}</arg>
                     </compilerArgs>
                    </configuration>
                </plugin>

                <plugin>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>appassembler-maven-plugin</artifactId>
                    <version>1.10</version>
                    <configuration>
                        <programs>
                            <program>
                                <mainClass>OverlaySignaturePDF</mainClass>
                                <id>OverlaySignaturePDF</id>
                            </program>
                        </programs>
                    </configuration>
                </plugin>

            </plugins>
    </build>

</project>