javademos/jep-tour/src/broken/StructuredScope26.java

import java.util.List;
import java.util.concurrent.StructuredTaskScope;
import java.util.concurrent.StructuredTaskScope.Joiner;

/**
 * JDK 26 code for the structured concurrency preview. It compiles on 26 and fails on 27:
 * StructuredTaskScope gained a third type parameter (the exception join() throws), and
 * FailedException / TimeoutException no longer exist. Driven by scripts/broken-on-27.sh.
 */
public class StructuredScope26 {
    public static void main(String[] args) throws Exception {
        try (StructuredTaskScope<String, List<String>> scope =
                     StructuredTaskScope.open(Joiner.<String>allSuccessfulOrThrow())) {
            scope.fork(() -> "price=42");
            List<String> results = scope.join();
            System.out.println(results);
        } catch (StructuredTaskScope.FailedException e) {
            System.out.println("a subtask failed: " + e.getCause());
        } catch (StructuredTaskScope.TimeoutException e) {
            System.out.println("timed out");
        }
    }
}