docs: add missing product READMEs and fix two doc inaccuracies

CONTRIBUTING.md

@@ -24,6 +24,28 @@ again.
 
 All code should follow the [Sample Format Guidelines](SAMPLE_FORMAT.md)
 
+## Documentation-only contributions
+
+If you are contributing documentation such as a README, keep the change small
+and reviewable.
+
+For missing product-level READMEs:
+
+- Use an existing product README in the repo as a template, such as
+  `secretmanager/README.md`, when one exists.
+- Do not invent sample entrypoints, class names, or product descriptions that
+  are not supported by the actual folder contents.
+- Prefer to add one product README at a time, or a small set of related ones,
+  rather than creating READMEs for every missing directory at once.
+- When a product folder already has good subdirectory READMEs, decide whether
+  a top-level README adds value before creating one.
+
+Before opening a pull request:
+
+- Verify the README matches the repo's current style.
+- If the repo has a docs or lint check, run it on the affected directories.
+- Make sure any links, badges, and exec examples are accurate.
+
 ## Code reviews
 
 Change to samples should be reviewed by both a product stakeholder for accuracy as well as a member

auth/README.md

@@ -15,11 +15,10 @@ Build your project with:
 
 	mvn clean package -DskipTests
 
-You can then run a given `ClassName` via:
+You can then run a given class via:
 
-	mvn exec:java -Dexec.mainClass=com.example.storage.ClassName \
-	    -DpropertyName=propertyValue \
-		-Dexec.args="any arguments to the app"
+	mvn exec:java -Dexec.mainClass=com.google.cloud.auth.samples.ClassName \
+	    -Dexec.args="any arguments to the app"
 
 ### Listing buckets with default credentials
 

bigquery/README.md

@@ -0,0 +1,50 @@
+# Google BigQuery
+
+<a href="https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=bigquery/README.md">
+<img alt="Open in Cloud Shell" src="https://gstatic.com/cloudssh/images/open-btn.png"></a>
+
+Google [BigQuery](https://cloud.google.com/bigquery/) is a serverless data warehouse
+for analytics over massive datasets. These sample Java applications demonstrate how to
+access the BigQuery API using the Google Java client libraries and REST-based samples.
+
+## Prerequisites
+
+### Enable the API
+
+You must [enable the BigQuery API](https://console.cloud.google.com/flows/enableapi?apiid=bigquery.googleapis.com)
+for your project in order to use these samples.
+
+### Set Environment Variables
+
+You must set your project ID in order to run the samples.
+
+```text
+$ export GOOGLE_CLOUD_PROJECT=<your-project-id-here>
+```
+
+### Authentication
+
+See the [authentication documentation](https://cloud.google.com/docs/authentication/production)
+for more information about authenticating for Google Cloud APIs.
+
+## Samples
+
+Samples are organized by client library and usage pattern:
+
+- [Cloud Client samples](cloud-client/)
+- [REST samples](rest/)
+- [BigQuery Storage samples](bigquerystorage/)
+
+Additional BigQuery-related samples may be located in nested subdirectories.
+
+## Tests
+
+Run all tests in a sample directory with Maven:
+
+```
+mvn clean verify
+```
+
+## Contributing
+
+See the [contributor guide](../CONTRIBUTING.md) for this repository.

bigtable/README.md

@@ -0,0 +1,55 @@
+# Google Cloud Bigtable
+
+<a href="https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=bigtable/README.md">
+<img alt="Open in Cloud Shell" src="https://gstatic.com/cloudssh/images/open-btn.png"></a>
+
+Google [Bigtable](https://cloud.google.com/bigtable/) is a scalable NoSQL
+wide-column database for large analytical and operational workloads. These sample
+Java applications demonstrate how to access the Bigtable API using the Google Java
+client libraries and related integration patterns.
+
+## Prerequisites
+
+### Enable the API
+
+You must [enable the Cloud Bigtable API](https://console.cloud.google.com/flows/enableapi?apiid=bigtable.googleapis.com)
+for your project in order to use these samples.
+
+### Set Environment Variables
+
+You must set your project ID in order to run the samples.
+
+```text
+$ export GOOGLE_CLOUD_PROJECT=<your-project-id-here>
+```
+
+### Authentication
+
+See the [authentication documentation](https://cloud.google.com/docs/authentication/production)
+for more information about authenticating for Google Cloud APIs.
+
+## Samples
+
+Samples are organized by client library, framework, and usage pattern:
+
+- [Apache Beam samples](beam/)
+- [Spark samples](spark/)
+- [HBase migration samples](hbase/)
+- [Bigtable Proxy samples](bigtable-proxy/)
+- [Scheduled backup samples](scheduled-backups/)
+- [Memorystore samples](memorystore/)
+- [Use case samples](use-cases/)
+
+Additional samples may be located in nested subdirectories.
+
+## Tests
+
+Run all tests in a sample directory with Maven:
+
+```
+mvn clean verify
+```
+
+## Contributing
+
+See the [contributor guide](../CONTRIBUTING.md) for this repository.

dialogflow-cx/README.md

@@ -0,0 +1,45 @@
+# Dialogflow CX
+
+<a href="https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=dialogflow-cx/README.md">
+<img alt="Open in Cloud Shell" src="https://gstatic.com/cloudssh/images/open-btn.png"></a>
+
+[Dialogflow CX](https://cloud.google.com/dialogflow/cx/docs) is a conversational
+AI platform for building advanced virtual agents with flows and pages. These sample
+Java applications demonstrate how to access the Dialogflow CX API using the Google
+Java client libraries.
+
+## Prerequisites
+
+### Enable the API
+
+You must [enable the Dialogflow CX API](https://console.cloud.google.com/flows/enableapi?apiid=dialogflow.googleapis.com)
+for your project in order to use these samples.
+
+### Set Environment Variables
+
+You must set your project ID in order to run the samples.
+
+```text
+$ export GOOGLE_CLOUD_PROJECT=<your-project-id-here>
+```
+
+### Authentication
+
+See the [authentication documentation](https://cloud.google.com/docs/authentication/production)
+for more information about authenticating for Google Cloud APIs.
+
+## Samples
+
+Samples in this directory use the Dialogflow CX Java client library.
+
+## Tests
+
+Run all tests in a sample directory with Maven:
+
+```
+mvn clean verify
+```
+
+## Contributing
+
+See the [contributor guide](../CONTRIBUTING.md) for this repository.

dialogflow/README.md

@@ -0,0 +1,40 @@
+# Dialogflow
+
+<a href="https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=dialogflow/README.md">
+<img alt="Open in Cloud Shell" src="https://gstatic.com/cloudssh/images/open-btn.png"></a>
+
+[Dialogflow](https://cloud.google.com/dialogflow/) helps you build conversational
+interfaces for websites, mobile applications, and other platforms. These sample
+Java applications demonstrate how to access the Dialogflow API using the Google
+Java client libraries.
+
+## Prerequisites
+
+### Enable the API
+
+You must [enable the Dialogflow API](https://console.cloud.google.com/flows/enableapi?apiid=dialogflow.googleapis.com)
+for your project in order to use these samples.
+
+### Authentication
+
+See the [authentication documentation](https://cloud.google.com/docs/authentication/production)
+for more information about authenticating for Google Cloud APIs.
+
+## Samples
+
+Samples are organized by usage pattern:
+
+- [Snippet samples](snippets/)
+- [Basic webhook samples](basic-webhook/)
+
+## Tests
+
+Run all tests in a sample directory with Maven:
+
+```
+mvn clean verify
+```
+
+## Contributing
+
+See the [contributor guide](../CONTRIBUTING.md) for this repository.

firestore/README.md

@@ -0,0 +1,45 @@
+# Cloud Firestore
+
+<a href="https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=firestore/README.md">
+<img alt="Open in Cloud Shell" src="https://gstatic.com/cloudssh/images/open-btn.png"></a>
+
+[Cloud Firestore](https://cloud.google.com/firestore/) is a flexible, scalable
+NoSQL document database for mobile, web, and server development. These sample
+Java applications demonstrate how to access the Firestore API using the Google
+Java client libraries.
+
+## Prerequisites
+
+### Enable the API
+
+You must [enable the Cloud Firestore API](https://console.cloud.google.com/flows/enableapi?apiid=firestore.googleapis.com)
+for your project in order to use these samples.
+
+### Set Environment Variables
+
+You must set your project ID in order to run the samples.
+
+```text
+$ export GOOGLE_CLOUD_PROJECT=<your-project-id-here>
+```
+
+### Authentication
+
+See the [authentication documentation](https://cloud.google.com/docs/authentication/production)
+for more information about authenticating for Google Cloud APIs.
+
+## Samples
+
+Samples are organized in the [samples](samples/) subdirectory.
+
+## Tests
+
+Run all tests in a sample directory with Maven:
+
+```
+mvn clean verify
+```
+
+## Contributing
+
+See the [contributor guide](../CONTRIBUTING.md) for this repository.

pubsub/README.md

@@ -0,0 +1,41 @@
+# Google Cloud Pub/Sub
+
+<a href="https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=pubsub/README.md">
+<img alt="Open in Cloud Shell" src="https://gstatic.com/cloudssh/images/open-btn.png"></a>
+
+Google [Cloud Pub/Sub](https://cloud.google.com/pubsub/) is a messaging and
+event-streaming service for asynchronous communication between independent
+applications. These sample Java applications demonstrate how to access the
+Pub/Sub API using the Google Java client libraries and related integration patterns.
+
+## Prerequisites
+
+### Enable the API
+
+You must [enable the Cloud Pub/Sub API](https://console.cloud.google.com/flows/enableapi?apiid=pubsub.googleapis.com)
+for your project in order to use these samples.
+
+### Authentication
+
+See the [authentication documentation](https://cloud.google.com/docs/authentication/production)
+for more information about authenticating for Google Cloud APIs.
+
+## Samples
+
+Samples are organized by client library and integration pattern:
+
+- [Cloud Client samples](cloud-client/)
+- [Spring integration samples](spring/)
+- [Streaming analytics samples](streaming-analytics/)
+
+## Tests
+
+Run all tests in a sample directory with Maven:
+
+```
+mvn clean verify
+```
+
+## Contributing
+
+See the [contributor guide](../CONTRIBUTING.md) for this repository.

run/README.md

@@ -3,7 +3,7 @@
 [![Open in Cloud Shell][shell_img]][shell_link]
 
 [shell_img]: http://gstatic.com/cloudssh/images/open-btn.png
-[shell_link]: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=blog/README.md
+[shell_link]: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=run/README.md
 
 This directory contains samples for [Google Cloud Run](https://cloud.run). [Cloud Run][run_docs] runs stateless [containers](https://cloud.google.com/containers/) on a fully managed environment or in your own GKE cluster.
 

storage/README.md

@@ -0,0 +1,48 @@
+# Google Cloud Storage
+
+<a href="https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/java-docs-samples&page=editor&open_in_editor=storage/README.md">
+<img alt="Open in Cloud Shell" src="https://gstatic.com/cloudssh/images/open-btn.png"></a>
+
+Google [Cloud Storage](https://cloud.google.com/storage/) is unified object storage
+for developers and enterprises, from live data serving to data analytics and archival.
+These sample Java applications demonstrate how to access the Cloud Storage API using
+the Google Cloud Java client libraries and related SDK samples.
+
+## Prerequisites
+
+### Enable the API
+
+You must [enable the Cloud Storage API](https://console.cloud.google.com/flows/enableapi?apiid=storage.googleapis.com)
+for your project in order to use these samples.
+
+### Set Environment Variables
+
+You must set your project ID in order to run the samples.
+
+```text
+$ export GOOGLE_CLOUD_PROJECT=<your-project-id-here>
+```
+
+### Authentication
+
+See the [authentication documentation](https://cloud.google.com/docs/authentication/production)
+for more information about authenticating for Google Cloud APIs.
+
+## Samples
+
+Samples are organized by client library and SDK usage:
+
+- [Cloud Client samples](cloud-client/)
+- [AWS S3 compatibility SDK samples](s3-sdk/)
+
+## Tests
+
+Run all tests in a sample directory with Maven:
+
+```
+mvn clean verify
+```
+
+## Contributing
+
+See the [contributor guide](../CONTRIBUTING.md) for this repository.