| AndroidConfig | Represents the Android-specific options that can be included in a Message. |
| AndroidConfig.Builder | |
| AndroidConfig.Priority | Priority levels that can be set on an AndroidConfig. |
| AndroidNotification | Represents the Android-specific notification options that can be included in a Message. |
| AndroidNotification.Builder | |
| ApnsConfig | Represents the APNS-specific options that can be included in a Message. |
| ApnsConfig.Builder | |
| Aps | Represents the aps dictionary that is part of every APNS message. |
| Aps.Builder | |
| ApsAlert | Represents the alert property that can be included in the aps dictionary of an APNS payload. |
| ApsAlert.Builder |
| ChildEventListener | Classes implementing this interface can be used to receive events about changes in the child
locations of a given DatabaseReference ref. |
| DatabaseError | Instances of DatabaseError are passed to callbacks when an operation failed. |
| DatabaseException | This error is thrown when the Firebase Database library is unable to operate on the input it has been given. |
| DatabaseReference | A Firebase reference represents a particular location in your Database and can be used for reading or writing data to that Database location. |
| DatabaseReference.CompletionListener | This interface is used as a method of being notified when an operation has been acknowledged by the Database servers and can be considered complete |
| DataSnapshot | A DataSnapshot instance contains data from a Firebase Database location. |
| Exclude | Marks a field as excluded from the Database. |
| ExportedUserRecord | Contains metadata associated with a Firebase user account, along with password hash and salt. |
| FirebaseApp | The entry point of Firebase SDKs. |
| FirebaseAuth | This class is the entry point for all server-side Firebase Authentication actions. |
| FirebaseAuthException | Generic exception related to Firebase Authentication. |
| FirebaseDatabase | The entry point for accessing a Firebase Database. |
| FirebaseException | Base class for all Firebase exceptions. |
| FirebaseInstanceId | This class is the entry point for all server-side Firebase Instance ID actions. |
| FirebaseInstanceIdException | Represents an exception encountered while interacting with the Firebase instance ID service. |
| FirebaseMessaging | This class is the entry point for all server-side Firebase Cloud Messaging actions. |
| FirebaseMessagingException | |
| FirebaseOptions | Configurable Firebase options. |
| FirebaseOptions.Builder | Builder for constructing FirebaseOptions. |
| FirebaseToken | Implementation of a Parsed Firebase Token returned by verifyIdToken(String). |
| FirestoreClient | FirestoreClient provides access to Google Cloud Firestore. |
| GenericTypeIndicator<T> | Due to the way that Java implements generics (type-erasure), it is necessary to use a slightly more complicated method to properly resolve types for generic collections at runtime. |
| IgnoreExtraProperties | Properties that don't map to class fields are ignored when serializing to a class annotated with this annotation. |
| ListUsersPage | Represents a page of ExportedUserRecord instances. |
| Logger | This interface is deprecated. Use SLF4J-based logging |
| Logger.Level | This enum is deprecated. Use SLF4J-based logging |
| Message | Represents a message that can be sent via Firebase Cloud Messaging (FCM). |
| Message.Builder | |
| MutableData | Instances of this class encapsulate the data and priority at a location. |
| Notification | Represents the notification parameters that can be included in a Message. |
| OnDisconnect | The OnDisconnect class is used to manage operations that will be run on the server when this client disconnects. |
| PropertyName | Marks a field to be renamed when serialized. |
| Query | The Query class (and its subclass, DatabaseReference) are used for reading data. |
| ServerValue | Contains placeholder values to use when writing data to the Firebase Database. |
| SessionCookieOptions | A set of additional options that can be passed to
createSessionCookieAsync(String, SessionCookieOptions). |
| SessionCookieOptions.Builder | |
| StorageClient | StorageClient provides access to Google Cloud Storage APIs. |
| ThreadManager | An interface that controls the thread pools and thread factories used by the Admin SDK. |
| ThrowOnExtraProperties | Properties that don't map to class fields when serializing to a class annotated with this annotation cause an exception to be thrown. |
| TopicManagementResponse | The response produced by FCM topic management operations. |
| TopicManagementResponse.Error | A topic management error. |
| Transaction | The Transaction class encapsulates the functionality needed to perform a transaction on the data at a location. |
| Transaction.Handler | An object implementing this interface is used to run a transaction, and will be notified of the results of the transaction. |
| Transaction.Result | Instances of this class represent the desired outcome of a single run of a Transaction.Handler's
doTransaction method. |
| UserInfo | A collection of standard profile information for a user. |
| UserMetadata | Contains additional metadata associated with a user account. |
| UserRecord | Contains metadata associated with a Firebase user account. |
| UserRecord.CreateRequest | A specification class for creating new user accounts. |
| UserRecord.UpdateRequest | A class for updating the attributes of an existing user. |
| ValueEventListener | Classes implementing this interface can be used to receive events about data changes at a location. |
| WebpushConfig | Represents the Webpush protocol options that can be included in a Message. |
| WebpushConfig.Builder | |
| WebpushNotification | Represents the Webpush-specific notification options that can be included in a Message. |