Connect open Java to open AI

 Create maven project:

mvn archetype:generate -DgroupId=com.openai.test -DartifactId=openAIBanking -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false;

Apps.java

package com.openai.test;

public class App

{

public static void main( String[] args )

{

Connection connection = new Connection();

connection.connect();

}

}

Connection.java

package com.openai.test;

import java.io.OutputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.Scanner;

import org.json.JSONObject;

import org.json.JSONArray;

public class Connection {

public void connect() {

try {

System.out.println("testing");

// 1. Set the endpoint URL for ChatGPT (gpt-3.5 or gpt-4)

URL url = new URL("https://api.openai.com/v1/chat/completions");

// 2. Open HTTP connection

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.setRequestMethod("POST");

//conn.setRequestProperty("Authorization", "Bearer YOUR_OPENAI_API_KEY");

conn.setRequestProperty("Authorization", "Bearer sk-p");

conn.setRequestProperty("Content-Type", "application/json");

conn.setDoOutput(true);

// 3. Create request body (in JSON format)

//String userQuestion = "What is routing No"; // Variable for the user question

String jsonInputString = "{\n" +

" \"model\": \"gpt-4o-mini\",\n" +

" \"messages\": [\n" +

" {\"role\": \"system\", \"content\": \"You are an expert in banking and finance. ONLY answer questions related to banking and finance in the United States. If a question is outside of this domain, respond with: 'The question is invalid to the banking domain.'\"},\n" +

" {\"role\": \"user\", \"content\": \"" + Question.userQuestion + "\"}\n" +

" ]\n" +

"}";

// 4. Send request

try (OutputStream os = conn.getOutputStream()) {

byte[] input = jsonInputString.getBytes("utf-8");

os.write(input, 0, input.length);

}

// 5. Read response

int responseCode = conn.getResponseCode();

System.out.println("Response Code: " + responseCode);

try (Scanner scanner = new Scanner(conn.getInputStream())) {

StringBuilder response = new StringBuilder();

while (scanner.hasNextLine()) {

response.append(scanner.nextLine());

}

//System.out.println("ChatGPT Response: " + response.toString());

// Parse JSON to extract just the assistant's content

JSONObject jsonResponse = new JSONObject(response.toString());

JSONArray choices = jsonResponse.getJSONArray("choices");

String content = choices.getJSONObject(0).getJSONObject("message").getString("content");

// Print only the actual response from ChatGPT

System.out.println("ChatGPT Answer: " + content);

}

} catch (Exception e) {

e.printStackTrace();

}

}

}

Question.java

package com.openai.test;

public class Question {

public static String userQuestion = "what is current intrest rate";

}

Pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>com.openai.test</groupId>

<artifactId>openAIBanking</artifactId>

<version>1.0-SNAPSHOT</version>

<name>openAIBanking</name>

<!-- FIXME change it to the project's website -->

<url>http://www.example.com</url>

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<maven.compiler.source>1.7</maven.compiler.source>

<maven.compiler.target>1.7</maven.compiler.target>

</properties>

<dependencies>

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.11</version>

<scope>test</scope>

</dependency>

<dependency>

<groupId>org.json</groupId>

<artifactId>json</artifactId>

<version>20230227</version>

</dependency>

</dependencies>

<build>

<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->

<plugins>

<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->

<plugin>

<artifactId>maven-clean-plugin</artifactId>

<version>3.1.0</version>

</plugin>

<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->

<plugin>

<artifactId>maven-resources-plugin</artifactId>

<version>3.0.2</version>

</plugin>

<plugin>

<artifactId>maven-compiler-plugin</artifactId>

<version>3.8.0</version>

</plugin>

<plugin>

<artifactId>maven-surefire-plugin</artifactId>

<version>2.22.1</version>

</plugin>

<plugin>

<artifactId>maven-jar-plugin</artifactId>

<version>3.0.2</version>

</plugin>

<plugin>

<artifactId>maven-install-plugin</artifactId>

<version>2.5.2</version>

</plugin>

<plugin>

<artifactId>maven-deploy-plugin</artifactId>

<version>2.8.2</version>

</plugin>

<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->

<plugin>

<artifactId>maven-site-plugin</artifactId>

<version>3.7.1</version>

</plugin>

<plugin>

<artifactId>maven-project-info-reports-plugin</artifactId>

<version>3.0.0</version>

</plugin>

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<version>3.8.1</version> <configuration>

<source>1.8</source>

<target>1.8</target>

</configuration>

</plugin>

</plugins>

</pluginManagement>

</build>

</project>