import java.util.concurrent.StructuredTaskScope;

/** The JDK 25/26 way to catch a failed scope. FailedException is gone in 27. */
public class OldFailedException {
    public static void main(String[] args) throws Exception {
        try (var scope = StructuredTaskScope.open()) {
            scope.fork(() -> { throw new IllegalStateException("boom"); });
            scope.join();
        } catch (StructuredTaskScope.FailedException e) {
            System.out.println("cause: " + e.getCause());
        }
    }
}