Question

This sounds so simple, so why an I struggling?

Is there a POM entry I can use to seal all the packages?

Or do I provide a manifest with value ‘Sealed: true’?

Thanks
Jeff Porter

Answer 1

> Or do I provide a manifest with value ‘Sealed: true’?

As explained in “Manifest Customization”:

<project>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <version>2.6</version>
        <configuration>
          <archive>
            <manifestEntries>
              <Sealed>true</Sealed>
            </manifestEntries>
          </archive>
        </configuration>
        ...
      </plugin>
    </plugins>
  </build>
  ...
</project>