elharo opened a new issue, #1648:
URL: https://github.com/apache/maven-dependency-plugin/issues/1648
`BuildClasspathMojo.execute()` at line 199-205:
```java
Set<Artifact> artifacts = getResolvedDependencies(true);
if (artifacts == null || artifacts.isEmpty()) {
getLog().info("No dependencies found.");
}
List<Artifact> artList = new ArrayList<>(artifacts); // NPE if null
```
When `getResolvedDependencies()` returns `null`, the code logs "No
dependencies found." but then falls through to `new ArrayList<>(null)`, which
throws NullPointerException. There is no `return` statement after the
null/empty check.
If `artifacts` is empty (not null), execution continues normally and
produces an empty classpath string, which is harmless but inconsistent.
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