adam bien's blog

import javax.json.Json;
import javax.json.JsonArray;
import javax.json.stream.JsonCollectors;
import org.junit.jupiter.api.Test;

public class StringListToJsonArrayTest {

    @Test
    public void conversion() {
        
        JsonArray jsonStringArray = Arrays.asList("duke", "duchess").
                stream().
                map(Json::createValue).
                collect(JsonCollectors.toJsonArray());
                        
        System.out.println(jsonStringArray);
    }
}    

...and the result is: ["duke","duchess"]