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StreamingExamples.java
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StreamingExamples.java
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import dev.langchain4j.data.message.AiMessage;
import dev.langchain4j.data.message.ChatMessage;
import dev.langchain4j.model.StreamingResponseHandler;
import dev.langchain4j.model.chat.StreamingChatLanguageModel;
import dev.langchain4j.model.language.StreamingLanguageModel;
import dev.langchain4j.model.openai.OpenAiStreamingChatModel;
import dev.langchain4j.model.openai.OpenAiStreamingLanguageModel;
import dev.langchain4j.model.output.Response;
import java.util.List;
import static dev.langchain4j.data.message.SystemMessage.systemMessage;
import static dev.langchain4j.data.message.UserMessage.userMessage;
import static java.util.Arrays.asList;
public class StreamingExamples {
static class StreamingChatLanguageModel_Example {
public static void main(String[] args) {
// Sorry, "demo" API key does not support streaming (yet). Please use your own key.
StreamingChatLanguageModel model = OpenAiStreamingChatModel.withApiKey(System.getenv("OPENAI_API_KEY"));
List<ChatMessage> messages = asList(
systemMessage("You are a very sarcastic assistant"),
userMessage("Tell me a joke")
);
model.generate(messages, new StreamingResponseHandler<AiMessage>() {
@Override
public void onNext(String token) {
System.out.println("New token: '" + token + "'");
}
@Override
public void onComplete(Response<AiMessage> response) {
System.out.println("Streaming completed: " + response);
}
@Override
public void onError(Throwable error) {
error.printStackTrace();
}
});
}
}
static class StreamingLanguageModel_Example {
public static void main(String[] args) {
// Sorry, "demo" API key does not support streaming (yet). Please use your own key.
StreamingLanguageModel model = OpenAiStreamingLanguageModel.withApiKey(System.getenv("OPENAI_API_KEY"));
model.generate("Tell me a joke", new StreamingResponseHandler<String>() {
@Override
public void onNext(String token) {
System.out.println("New token: '" + token + "'");
}
@Override
public void onComplete(Response<String> response) {
System.out.println("Streaming completed: " + response);
}
@Override
public void onError(Throwable error) {
error.printStackTrace();
}
});
}
}
}