(Java) Upload a File to an AI Provider (OpenAI, Google, Antropic, X)

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Note: This example requires Chilkat v11.4.0 or greater.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    CkAi ai = new CkAi();

    // The provider can be "openai", "google", "claude", "grok", or any AI that supports uploading files for later reference by ID.
    ai.put_Provider("openai");
    // Use your provider's API key.
    ai.put_ApiKey("MY_API_KEY");

    // We can upload directly from a file in the filesystem, or from a Chilkat StringBuilder, or from a Chilkat BinData.

    // Some AI providers require a content-type.
    // Also, some AI providers are picky about what content-type's are accepted.
    // Check the AI provider's documentation.
    // "application/json" is generally always acceptable.
    // "text/plain" can be used as a fallback for any text file.
    String contentType = "application/json";
    String localFilePath = "qa_data/hamlet.json";
    String filenameOnServer = "hamlet.json";

    // Upload directly from a file.
    String file_id = ai.uploadFile(localFilePath,contentType);
    if (ai.get_LastMethodSuccess() == false) {
        System.out.println(ai.lastErrorText());
        System.out.println("AI File Upload Failed.");
        }
    else {
        System.out.println("File ID: " + file_id);
        System.out.println("File uploaded.");
        }

    // Upload from the contents of a StringBuilder
    CkStringBuilder sb = new CkStringBuilder();
    success = sb.LoadFile(localFilePath,"utf-8");
    if (success == false) {
        System.out.println(sb.lastErrorText());
        return;
        }

    file_id = ai.uploadFileSb(sb,filenameOnServer,contentType);
    if (ai.get_LastMethodSuccess() == false) {
        System.out.println(ai.lastErrorText());
        System.out.println("AI File Upload Failed.");
        }
    else {
        System.out.println("File ID: " + file_id);
        System.out.println("File uploaded.");
        }

    // Upload from the contents of a BinData
    CkBinData bd = new CkBinData();
    success = bd.LoadFile(localFilePath);
    if (success == false) {
        System.out.println(bd.lastErrorText());
        return;
        }

    file_id = ai.uploadFileBd(bd,filenameOnServer,contentType);
    if (ai.get_LastMethodSuccess() == false) {
        System.out.println(ai.lastErrorText());
        System.out.println("AI File Upload Failed.");
        }
    else {
        System.out.println("File ID: " + file_id);
        System.out.println("File uploaded.");
        }
  }
}