dosubot[bot] commented on issue #2743:
URL:
https://github.com/apache/incubator-hugegraph/issues/2743#issuecomment-2709248494
<!-- Answer -->
The `NullPointerException` in the `Version.getVersion` method is likely
caused by the `InputStream` being `null`, which happens if the `/version.txt`
resource is not found in the classpath. To fix this issue, ensure that the
`version.txt` file is correctly placed in the classpath. Additionally, you can
add a null check for the `InputStream` to handle the case where the resource is
not found:
```java
public static String getVersion() {
if (version.isEmpty()) {
try (InputStream is =
Version.class.getResourceAsStream("/version.txt")) {
if (is == null) {
log.error("Resource /version.txt not found");
return "unknown";
}
byte[] buf = new byte[64];
int len = is.read(buf);
version = new String(buf, 0, len);
} catch (Exception e) {
log.error("Version.getVersion exception: ", e);
}
}
return version;
}
```
This modification will log an error message if the resource is not found and
return a default version string, such as "unknown"
<sup>[[1]](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-store/hg-store-core/src/main/java/org/apache/hugegraph/store/util/Version.java)</sup>.
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