Build Your Own AI App Using OpenAI Java API

OpenAI Java API Demo 1. In this demo, we will download openai api for Java 2. Build our own app by calling api

Java api web site: https://github.com/TheoKanning/openai-java What is GPT? Generative Pre-trained Transformers, commonly known as GPT, are a family of neural network models that uses the transformer architecture and is a key advancement in artificial intelligence (AI) powering generative AI applications such as ChatGPT. GPT models give applications the ability to create human-like text and content (images, music, and more), and answer questions in a conversational manner. Organizations across industries are using GPT models and generative AI for Q&A bots, text summarization, content generation, and search.

Step 1 Create folder and download the code: git clone https://github.com/TheoKanning/openai-java.git

Step 2 Create api Key

Step 3 Build api Check binary is generated.

Step 4 Use openai API

Create a OpenAI Service Create a Java class and copy/paste next code OpenAiService service = new OpenAiService("your_token"); CompletionRequest completionRequest = CompletionRequest.builder() .prompt("Somebody once told me the world is gonna roll me") .model("ada") .echo(true) .build(); service.createCompletion(completionRequest).getChoices().forEach(System.out::println);

It has some error shows, because we need tell the Jdeveloper which library to use to refer those opanapi Java library.

Right click the project and go to the project properties.

Select the User group and click New button

Give a library name, here is openai_api, and select classpath, and click AddEntry to add those jars we buit previously.

Make sure select the right library, and click OK.

The library is added to the project and click OK.

The whole Java code is as follows, you can compile success after adding the openai api library. package com.david.openai; import com.theokanning.openai.completion.CompletionChoice; import com.theokanning.openai.completion.CompletionRequest; import com.theokanning.openai.completion.CompletionResult; import com.theokanning.openai.service.OpenAiService; import java.util.List; public class DemoService { public DemoService() { super(); } // Copy and Paste the code at here. private static final String myToken = "sk-****The Token Need be Yours *****x"; public void test() { OpenAiService service = new OpenAiService(myToken); CompletionRequest completionRequest = CompletionRequest.builder() .prompt("Somebody once told me the world is gonna roll me") .model("ada") .echo(true) .build(); CompletionResult result = service.createCompletion(completionRequest); List<CompletionChoice> choices = result.getChoices(); for (CompletionChoice choice : choices) { String choiceText = choice.getText(); System.out.println(choiceText); } } public static void main(String[] args) { DemoService demo = new DemoService(); demo.test(); } }

In the next we will use maven to download the required Java run time library Create a maven file as follows:

We need add dependencys of te retrofit: The latest version of these libraries can be found via https://mvnrepository.com/artifact/com.squareup.retrofit2 Let s adding the next dependencys to the pom file: <dependency> <groupId>com.squareup.retrofit2</groupId> <artifactId>retrofit</artifactId> <version>2.9.0</version> </dependency> <dependency> <groupId>com.squareup.retrofit2</groupId> <artifactId>converter-jackson</artifactId> <version>2.9.0</version> </dependency> <dependency> <groupId>com.squareup.retrofit2</groupId> <artifactId>adapter-rxjava2</artifactId> <version>2.9.0</version> </dependency>

Now lets run a maven clean or compile to download the library.

Open the pom file and go to overview, add the src folder as Test Resource

Lets run maven test

When do the test, we need fix the code to limit a few results, otherwise we are over the limit. Also need to setup a payment method in the openAI.

Lets do some runs, and the output is different.