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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
 
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>
 
    <name>demo</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>11</java.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
        <maven.compiler.release>${java.version}</maven.compiler.release>

        <junit>5.6.2</junit>
        
        <!-- Plugin versions -->
        <maven.shade>3.2.2</maven.shade>
        <maven.clean>3.1.0</maven.clean>
        <maven.resources>3.1.0</maven.resources>
        <maven.compiler>3.8.1</maven.compiler>
        <maven.surefire>3.0.0-M5</maven.surefire>
        <maven.jar>3.2.0</maven.jar>
        <maven.install>3.0.0-M1</maven.install>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>42.7.4</version>
        </dependency>
    
        <!-- Testing dependencies-->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>${junit}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>${junit}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-params</artifactId>
            <version>${junit}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-clean-plugin</artifactId>
                <version>3.1.0</version>
            </plugin>
            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <version>3.1.0</version>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
            </plugin>
            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>3.0.0-M4</version>
            </plugin>
            <plugin>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.2.0</version>
            </plugin>
            <plugin>
                <artifactId>maven-install-plugin</artifactId>
                <version>3.0.0-M1</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>${maven.shade}</version>
                <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                    <goal>shade</goal>
                    </goals>
                    <configuration>
                    <transformers>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <mainClass>com.example.App</mainClass>
                        </transformer>
                    </transformers>
                    </configuration>
                </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>