Bug

createArchive() catches Exception in its error handling block, which is broader than necessary and can swallow unrelated exceptions.

Location

AbstractJarMojo.java:291-294:

} catch (Exception e) {
    // TODO: improve error handling
    throw new MojoException("Error assembling JAR", e);
}

Problem

Catching Exception will also catch unchecked runtime exceptions (e.g. NullPointerException, ArrayIndexOutOfBoundsException) and even Throwable subtypes like Error (though Error is not a subclass of Exception). The existing // TODO: improve error handling comment acknowledges this. Consider narrowing the catch clause to the specific exception types thrown by the operations in the try block.

Suggested fix

Catch IOException and MavenArchiverException (or other specific exception types from the archiver API) instead of the generic Exception.