OpenAI Chat in Java

This page was automatically generated by AI; not yet reviewed for accuracy...

The content and code samples on this page were generated by using the ai CLI with customized prompts in this repository.

It's cool, but, it's experimental. 😁

Please review the content and code before using it in your application.

This sample demonstrates how to use the OpenAI Chat API in a Java console application.

Main.java
OpenAIChatCompletionsClass.java

How to generate this sample

Command

ai dev new openai-chat --java

Output

AI - Azure AI CLI, Version 1.0.0
Copyright (c) 2024 Microsoft Corporation. All Rights Reserved.

This PUBLIC PREVIEW version may change at any time.
See: https://aka.ms/azure-ai-cli-public-preview

Generating 'openai-chat' in 'openai-chat-java' (3 files)...

pom.xml
src/Main.java
src/OpenAIChatCompletionsClass.java

Generating 'openai-chat' in 'openai-chat-java' (3 files)... DONE!

Main.java

STEP 1: Read the configuration settings from environment variables:

Main.java

String openAIAPIKey = (System.getenv("AZURE_OPENAI_API_KEY") != null) ? System.getenv("AZURE_OPENAI_API_KEY") : "<insert your OpenAI API key here>";
String openAIEndpoint = (System.getenv("AZURE_OPENAI_ENDPOINT") != null) ? System.getenv("AZURE_OPENAI_ENDPOINT") : "<insert your OpenAI endpoint here>";
String openAIChatDeployment = (System.getenv("AZURE_OPENAI_CHAT_DEPLOYMENT") != null) ? System.getenv("AZURE_OPENAI_CHAT_DEPLOYMENT") : "<insert your OpenAI chat deployment name here>";
String openAISystemPrompt = (System.getenv("AZURE_OPENAI_SYSTEM_PROMPT") != null) ? System.getenv("AZURE_OPENAI_SYSTEM_PROMPT") : "You are a helpful AI assistant.";

STEP 2: Initialize the helper class with the configuration settings:

Main.java

OpenAIChatCompletionsClass chat = new OpenAIChatCompletionsClass(openAIAPIKey, openAIEndpoint, openAIChatDeployment, openAISystemPrompt);

STEP 3: Obtain user input, use the helper class to get the assistant's response, and display responses as they are received:

Main.java

Scanner scanner = new Scanner(System.in);
while (true) {
    System.out.print("User: ");
    if (!scanner.hasNextLine()) break;

    String userPrompt = scanner.nextLine();
    if (userPrompt.isEmpty() || "exit".equals(userPrompt)) break;

    String response = chat.getChatCompletion(userPrompt);
    System.out.println("\nAssistant: " + response + "\n");
}
scanner.close();

OpenAIChatCompletionsClass.java

STEP 1: Create the client and initialize chat message history with a system message:

OpenAIChatCompletionsClass.java

public OpenAIChatCompletionsClass (String openAIAPIKey, String openAIEndpoint, String openAIChatDeployment, String openAISystemPrompt) {
    this.openAIChatDeployment = openAIChatDeployment;
    this.openAISystemPrompt = openAISystemPrompt;
    client = new OpenAIClientBuilder()
        .endpoint(openAIEndpoint)
        .credential(new AzureKeyCredential(openAIAPIKey))
        .buildClient();

    List<ChatRequestMessage> chatMessages = new ArrayList<>();
    options = new ChatCompletionsOptions(chatMessages);
    ClearConversation();
}

STEP 2: Clear previous conversation and set the initial system message:

OpenAIChatCompletionsClass.java

public void ClearConversation(){
    List<ChatRequestMessage> chatMessages = options.getMessages();
    chatMessages.clear();
    chatMessages.add(new ChatRequestSystemMessage(this.openAISystemPrompt));
}

STEP 3: When the user provides input, add the user message to the chat message history:

OpenAIChatCompletionsClass.java

public String getChatCompletion(String userPrompt) {
    options.getMessages().add(new ChatRequestUserMessage(userPrompt));

STEP 4: Send the chat message history to the OpenAI Chat API and process the response:

OpenAIChatCompletionsClass.java

    ChatCompletions chatCompletions = client.getChatCompletions(this.openAIChatDeployment, options);
    String responseContent = chatCompletions.getChoices().get(0).getMessage().getContent();
    options.getMessages().add(new ChatRequestAssistantMessage(responseContent.toString()));

    return responseContent;
}