Why doesn't maven create properties?

Question

Java

The pom.xml file has this construction

<properties>
            <datasource>jdbc/${project.artifactId}DS</datasource>
</properties>

Then this datasource is used in the setting.properties of the project.
datasourceName=${datasource}
The problem is that in setting.properties this datasource is equal to null every other time. Why is that? something wrong with maven? Although I tried different versions

Answer 1

These properties are for use inside the pom.xml itself, they do not affect setting.properties in any way

Answer 2

So:

<properties>
        <jdk.version>1.8</jdk.version>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>${jdk.version}</source>
                    <target>${jdk.version}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>