CreateCourse.java

// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// [START classroom_create_course]

import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.googleapis.json.GoogleJsonError;
import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.classroom.Classroom;
import com.google.api.services.classroom.ClassroomScopes;
import com.google.api.services.classroom.model.Course;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.ArrayList;
import java.util.Arrays;

/* Class to demonstrate the use of Classroom Create Course API */
public class CreateCourse {
  /* Scopes required by this API call. If modifying these scopes, delete your previously saved
  tokens/ folder. */
  static ArrayList<String> SCOPES =
      new ArrayList<>(Arrays.asList(ClassroomScopes.CLASSROOM_COURSES));

  /**
   * Creates a course
   *
   * @return newly created course
   * @throws IOException - if credentials file not found.
   * @throws GeneralSecurityException - if a new instance of NetHttpTransport was not created.
   */
  public static Course createCourse() throws GeneralSecurityException, IOException {

    // Create the classroom API client.
    final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
    Classroom service =
        new Classroom.Builder(
                HTTP_TRANSPORT,
                GsonFactory.getDefaultInstance(),
                ClassroomCredentials.getCredentials(HTTP_TRANSPORT, SCOPES))
            .setApplicationName("Classroom samples")
            .build();

    Course course = null;
    try {
      // Adding a new course with description. Set CourseState to `ACTIVE`. Possible values of
      // CourseState can be found here:
      // https://developers.google.com/classroom/reference/rest/v1/courses#coursestate
      course =
          new Course()
              .setName("10th Grade Biology")
              .setSection("Period 2")
              .setDescriptionHeading("Welcome to 10th Grade Biology")
              .setDescription(
                  "We'll be learning about about the structure of living creatures "
                      + "from a combination of textbooks, guest lectures, and lab work. Expect "
                      + "to be excited!")
              .setRoom("301")
              .setOwnerId("me")
              .setCourseState("ACTIVE");
      course = service.courses().create(course).execute();
      // Prints the new created course Id and name
      System.out.printf("Course created: %s (%s)\n", course.getName(), course.getId());
    } catch (GoogleJsonResponseException e) {
      GoogleJsonError error = e.getDetails();
      if (error.getCode() == 400) {
        System.err.println("Unable to create course, ownerId not specified.\n");
      } else {
        throw e;
      }
    }
    return course;
  }
}
// [END classroom_create_course]