TL;DR;

ChatGPT Java SDK

Add the dependency

Maven

<dependency>
    <groupId>io.github.kezhenxu94</groupId>
    <artifactId>chatgpt-java-sdk</artifactId>
    <version>${chatgpt-java.version}</version>
</dependency>

Gradle

implementation 'io.github.kezhenxu94:chatgpt-java-sdk:${chatgpt-java.version}'

Usage

public class ChatGPTTest {
    public static void main(String[] args) throws IOException, InterruptedException {
        final var chatGPT = ChatGPT
                .builder()
                .dataPath(Files.createTempDirectory("chatgpt")) // Persist the chat history to a data path
                .build();

        // Start a new conversation
        final var conversation = chatGPT.newConversation();
        System.out.println(conversation.ask("What's your name?").content());
        // Output: I'm an AI language model developed by OpenAI, and I don't have a name. What can I help you with today?
        System.out.println(conversation.ask("What did I ask you?").content());
        // Output: You asked for my name.
        conversation.save(); // Save the history manually, conversations are saved on shutdown by default.

        final var conversation2 = chatGPT.newConversation("You are a software engineer.");
        System.out.println(conversation2.ask("What's your job?").content());
        System.out.println(conversation2.ask("What's your day to day work?").content());

        // Load a conversation by the ID
        final var conversation3 = chatGPT.loadConversation(conversation.id());
        conversation3.ask("What did I ask you?");
        // Should print the same as the first conversation
    }
}

A demo usage of ChatGPT Java SDK is the ChatGPT CLI, built with Spring Shell and Graalvm.

ChatGPT CLI

Who on earth would want to use CLI to interact with ChatGPT? Developers!

Prerequisites

An API key from OpenAI platform is required before using the CLI, head to OpenAI Account to create one.

export CHATGPT_API_KEY=<your-api-key>

Download the CLI

Head to Releases to download the CLI according to your os.

sudo install chatgpt-cli.macos /usr/local/bin/chatgpt

Running the CLI in Docker

docker run -it --rm -e CHATGPT_API_KEY kezhenxu94/chatgpt-cli

Usage

Conversation (Interactive Mode)

chatgpt-cli by default runs in interactive mode and the questions in one session is a conversation, so ChatGPT remembers your previous questions inside a single conversation, you can use ask command to ask ChatGPT any question:

chatgpt
> ask --question 'What is your name?'

Or you can omit --question and simply:

chatgpt
> ask "What is your name?"
> ask "What did I ask you?"
# should reply something like "You asked for my name."

But don't forget to quote the question if it contains spaces.

One-shot (Non-Interactive Mode)

If you want to ask ChatGPT a one-shot question, you can pass the ask command and the question directly, so ChatGPT will exit after it replies your questions:

chatgpt ask "What is your name?"

ChatGPT GitHub Action

Add OpenAI API Key Secret

Add your OpenAI API key as a secret to your repository. Go to https://github.com/<owner>/<repo>/settings/secrets/actions, create "New repository secret" with the name OPENAI_KEY and your API key as the value.

Usage

- name: Setup ChatGPT
  uses: kezhenxu94/chatgpt-java/chatgpt-cli@v0.11.0
- name: Answer the question
  env:
    CHATGPT_API_KEY: ${{ secrets.OPENAI_KEY }}
  run: |
    chatgpt ask "What is your name?"