Invitationinvitation=null;try{/* Set the role the user is invited to have in the course. Possible values of CourseRole can be found here: https://developers.google.com/classroom/reference/rest/v1/invitations#courserole.*/Invitationcontent=newInvitation().setCourseId(courseId).setUserId(userId).setRole("TEACHER");invitation=service.invitations().create(content).execute();System.out.printf("User (%s) has been invited to course (%s).\n",invitation.getUserId(),invitation.getCourseId());}catch(GoogleJsonResponseExceptione){// TODO (developer) - handle error appropriatelyGoogleJsonErrorerror=e.getDetails();if(error.getCode()==404){System.out.printf("The course or user does not exist.\n");}throwe;}catch(Exceptione){throwe;}returninvitation;
Invitationinvitation=null;try{invitation=service.invitations().get(id).execute();System.out.printf("Invitation (%s) for user (%s) in course (%s) retrieved.\n",invitation.getId(),invitation.getUserId(),invitation.getCourseId());}catch(GoogleJsonResponseExceptione){GoogleJsonErrorerror=e.getDetails();if(error.getCode()==404){System.out.printf("The invitation id (%s) does not exist.\n",id);}throwe;}catch(Exceptione){throwe;}returninvitation;
招待を承諾する
招待を承諾すると、招待が削除され、招待されたユーザーが招待で指定されたロールでコースに追加されます。招待を承諾するには、invitations.accept() メソッドを呼び出し、招待の id を指定します。
try{service.invitations().accept(id).execute();System.out.printf("Invitation (%s) was accepted.\n",id);}catch(GoogleJsonResponseExceptione){GoogleJsonErrorerror=e.getDetails();if(error.getCode()==404){System.out.printf("The invitation id (%s) does not exist.\n",id);}throwe;}catch(Exceptione){throwe;}
招待を削除する
招待状を更新するには、招待状を削除して新しい招待状を作成するしかありません。招待を削除するには、invitations.delete() メソッドを呼び出して id を指定します。
try{service.invitations().delete(id).execute();System.out.printf("Invitation (%s) was deleted.\n",id);}catch(GoogleJsonResponseExceptione){GoogleJsonErrorerror=e.getDetails();if(error.getCode()==404){System.out.printf("The invitation id (%s) does not exist.\n",id);}throwe;}catch(Exceptione){throwe;}
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-08-01 UTC。"],[],[],null,["# Manage Course Invitations\n\nAn [`Invitation` resource](/workspace/classroom/reference/rest/v1/invitations) in Classroom represents an invitation\nfor a user to join a course with a specific [course role](/workspace/classroom/reference/rest/v1/invitations#courserole): student, teacher,\nor owner.\n\nEach `Invitation` resource contains the following fields:\n\n- `id`: Classroom-assigned identifier for the invitation.\n- `userId`: The ID of the user that has been invited to the course.\n- `courseId`: The course that the user is being invited to.\n- `role`: The [course role](/workspace/classroom/reference/rest/v1/invitations#courserole) that the invited user will have in the course.\n\nCreate an Invitation\n--------------------\n\nThe [`invitations.create()`](/workspace/classroom/reference/rest/v1/invitations/create) method can be used to invite a user to a course\nwith a specific role. Include the [`Invitation` resource](/workspace/classroom/reference/rest/v1/invitations) in the request body\nand specify the `courseId`, `userId`, and `role`. \n\n### Java\n\nclassroom/snippets/src/main/java/CreateInvitation.java \n[View on GitHub](https://github.com/googleworkspace/java-samples/blob/main/classroom/snippets/src/main/java/CreateInvitation.java) \n\n```java\nInvitation invitation = null;\ntry {\n /* Set the role the user is invited to have in the course. Possible values of CourseRole can be\n found here: https://developers.google.com/classroom/reference/rest/v1/invitations#courserole.*/\n Invitation content =\n new Invitation().setCourseId(courseId).setUserId(userId).setRole(\"TEACHER\");\n\n invitation = service.invitations().create(content).execute();\n\n System.out.printf(\n \"User (%s) has been invited to course (%s).\\n\",\n invitation.getUserId(), invitation.getCourseId());\n} catch (GoogleJsonResponseException e) {\n // TODO (developer) - handle error appropriately\n GoogleJsonError error = e.getDetails();\n if (error.getCode() == 404) {\n System.out.printf(\"The course or user does not exist.\\n\");\n }\n throw e;\n} catch (Exception e) {\n throw e;\n}\nreturn invitation;\n```\n\nRetrieve an Invitation\n----------------------\n\nRetrieve a specific invitation by calling the [`invitations.get()`](/workspace/classroom/reference/rest/v1/invitations/get) method\nand specifying the `id` of the invitation. \n\n### Java\n\nclassroom/snippets/src/main/java/GetInvitation.java \n[View on GitHub](https://github.com/googleworkspace/java-samples/blob/main/classroom/snippets/src/main/java/GetInvitation.java) \n\n```java\nInvitation invitation = null;\ntry {\n invitation = service.invitations().get(id).execute();\n System.out.printf(\n \"Invitation (%s) for user (%s) in course (%s) retrieved.\\n\",\n invitation.getId(), invitation.getUserId(), invitation.getCourseId());\n} catch (GoogleJsonResponseException e) {\n GoogleJsonError error = e.getDetails();\n if (error.getCode() == 404) {\n System.out.printf(\"The invitation id (%s) does not exist.\\n\", id);\n }\n throw e;\n} catch (Exception e) {\n throw e;\n}\nreturn invitation;\n```\n\nAccept an Invitation\n--------------------\n\nAccepting an invitation deletes the invitation and adds the invited\nuser to the course with the role specified in the invitation. Accept an\ninvitation by calling the [`invitations.accept()`](/workspace/classroom/reference/rest/v1/invitations/accept) method and specifying the\n`id` of the invitation. \n\n### Java\n\nclassroom/snippets/src/main/java/AcceptInvitation.java \n[View on GitHub](https://github.com/googleworkspace/java-samples/blob/main/classroom/snippets/src/main/java/AcceptInvitation.java) \n\n```java\ntry {\n service.invitations().accept(id).execute();\n System.out.printf(\"Invitation (%s) was accepted.\\n\", id);\n} catch (GoogleJsonResponseException e) {\n GoogleJsonError error = e.getDetails();\n if (error.getCode() == 404) {\n System.out.printf(\"The invitation id (%s) does not exist.\\n\", id);\n }\n throw e;\n} catch (Exception e) {\n throw e;\n}\n```\n\nDelete an Invitation\n--------------------\n\nThe only way to update an invitation is to delete it and create a new\ninvitation. To delete the invitation, call the [`invitations.delete()`](/workspace/classroom/reference/rest/v1/invitations/delete) method\nand specify the `id`. \n\n### Java\n\nclassroom/snippets/src/main/java/DeleteInvitation.java \n[View on GitHub](https://github.com/googleworkspace/java-samples/blob/main/classroom/snippets/src/main/java/DeleteInvitation.java) \n\n```java\ntry {\n service.invitations().delete(id).execute();\n System.out.printf(\"Invitation (%s) was deleted.\\n\", id);\n} catch (GoogleJsonResponseException e) {\n GoogleJsonError error = e.getDetails();\n if (error.getCode() == 404) {\n System.out.printf(\"The invitation id (%s) does not exist.\\n\", id);\n }\n throw e;\n} catch (Exception e) {\n throw e;\n}\n```"]]