How to get children's folder name in google Drive using java

Question

I am working with Google Drive API in java. I got children's Folder Id in my code but I want Children's Folder name. I applied all method to get Children's folder name but I did not get

Drive.Children.List FolderID = service.children().list(child.getId());

from this code I got Folder Id like 0B3-sXIe4DGz1c3RhcnRlcl9.

 Drive.Children.List Foldername = service.children().list(child.getId().getClass().getName());

In this code it returns {folderId=java.lang.String}

How can I get the name of the folder?

Answer 1

In Google drive folders are files. You have the folder id use Files.get to return the FileResource which contains the title of the folder.

Code ripped from documentation for Files.get

import com.google.api.client.http.GenericUrl;
import com.google.api.client.http.HttpResponse;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.model.File;

import java.io.IOException;
import java.io.InputStream;

// ...

public class MyClass {

  // ...

  /**
   * Print a file's metadata.
   *
   * @param service Drive API service instance.
   * @param fileId ID of the file to print metadata for.
   */
  private static void printFile(Drive service, String fileId) {

    try {
      File file = service.files().get(fileId).execute();

      System.out.println("Title: " + file.getTitle());
      System.out.println("Description: " + file.getDescription());
      System.out.println("MIME type: " + file.getMimeType());
    } catch (IOException e) {
      System.out.println("An error occured: " + e);
    }
  }

  /**
   * Download a file's content.
   *
   * @param service Drive API service instance.
   * @param file Drive File instance.
   * @return InputStream containing the file's content if successful,
   *         {@code null} otherwise.
   */
  private static InputStream downloadFile(Drive service, File file) {
    if (file.getDownloadUrl() != null && file.getDownloadUrl().length() > 0) {
      try {
        HttpResponse resp =
            service.getRequestFactory().buildGetRequest(new GenericUrl(file.getDownloadUrl()))
                .execute();
        return resp.getContent();
      } catch (IOException e) {
        // An error occurred.
        e.printStackTrace();
        return null;
      }
    } else {
      // The file doesn't have any content stored on Drive.
      return null;
    }
  }

  // ...
}