sszuev opened a new issue, #1990:
URL: https://github.com/apache/jena/issues/1990
### Version
4.9.0
### What happened?
Expect all modify operations are prohibited.
```java
import org.apache.jena.graph.Graph;
import org.apache.jena.graph.NodeFactory;
import org.apache.jena.graph.Triple;
import org.apache.jena.sparql.graph.GraphFactory;
public class TmpUnmodifiableGraph {
public static void main(String[] args) {
Graph graph = new
org.apache.jena.sparql.graph.UnmodifiableGraph(GraphFactory.createGraphMem());
try {
graph.add(Triple.create(NodeFactory.createURI("a"),
NodeFactory.createURI("b"), NodeFactory.createURI("c")));
throw new AssertionError();
} catch (Exception e) {
e.printStackTrace();
}
}
}
```
This is quite an old problem (also in 3.x.x)
So, probably, this is by design. But strange.
### Relevant output and stacktrace
_No response_
### Are you interested in making a pull request?
None
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