docs(samples): add finalize call to our samples

README.md

@@ -49,7 +49,7 @@ If you are using Maven without BOM, add this to your dependencies:
 If you are using Gradle 5.x or later, add this to your dependencies
 
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:24.1.2')
+implementation platform('com.google.cloud:libraries-bom:24.2.0')
 
 implementation 'com.google.cloud:google-cloud-bigquerystorage'
 ```

samples/snippets/src/main/java/com/example/bigquerystorage/WriteBufferedStream.java

@@ -21,6 +21,7 @@
 import com.google.cloud.bigquery.storage.v1.AppendRowsResponse;
 import com.google.cloud.bigquery.storage.v1.BigQueryWriteClient;
 import com.google.cloud.bigquery.storage.v1.CreateWriteStreamRequest;
+import com.google.cloud.bigquery.storage.v1.FinalizeWriteStreamRequest;
 import com.google.cloud.bigquery.storage.v1.FlushRowsRequest;
 import com.google.cloud.bigquery.storage.v1.FlushRowsResponse;
 import com.google.cloud.bigquery.storage.v1.JsonStreamWriter;
@@ -78,7 +79,6 @@ public static void writeBufferedStream(String projectId, String datasetName, Str
           ApiFuture<AppendRowsResponse> future = writer.append(jsonArr);
           AppendRowsResponse response = future.get();
         }
-
         // Flush the buffer.
         FlushRowsRequest flushRowsRequest =
             FlushRowsRequest.newBuilder()
@@ -88,6 +88,10 @@ public static void writeBufferedStream(String projectId, String datasetName, Str
         FlushRowsResponse flushRowsResponse = client.flushRows(flushRowsRequest);
         // You can continue to write to the stream after flushing the buffer.
       }
+      // Finalize the stream after use.
+      FinalizeWriteStreamRequest finalizeWriteStreamRequest =
+          FinalizeWriteStreamRequest.newBuilder().setName(writeStream.getName()).build();
+      client.finalizeWriteStream(finalizeWriteStreamRequest);
       System.out.println("Appended and committed records successfully.");
     } catch (ExecutionException e) {
       // If the wrapped exception is a StatusRuntimeException, check the state of the operation.

samples/snippets/src/main/java/com/example/bigquerystorage/WriteCommittedStream.java

@@ -21,6 +21,7 @@
 import com.google.cloud.bigquery.storage.v1.AppendRowsResponse;
 import com.google.cloud.bigquery.storage.v1.BigQueryWriteClient;
 import com.google.cloud.bigquery.storage.v1.CreateWriteStreamRequest;
+import com.google.cloud.bigquery.storage.v1.FinalizeWriteStreamRequest;
 import com.google.cloud.bigquery.storage.v1.JsonStreamWriter;
 import com.google.cloud.bigquery.storage.v1.TableName;
 import com.google.cloud.bigquery.storage.v1.WriteStream;
@@ -64,7 +65,9 @@ public static void writeCommittedStream(String projectId, String datasetName, St
       try (JsonStreamWriter writer =
           JsonStreamWriter.newBuilder(writeStream.getName(), writeStream.getTableSchema())
               .build()) {
-        // Write two batches to the stream, each with 10 JSON records.
+        // Write two batches to the stream, each with 10 JSON records. A writer should be
+        // used for as much writes as possible. Creating a writer for just one write is an
+        // antipattern.
         for (int i = 0; i < 2; i++) {
           // Create a JSON object that is compatible with the table schema.
           JSONArray jsonArr = new JSONArray();
@@ -79,6 +82,10 @@ public static void writeCommittedStream(String projectId, String datasetName, St
           ApiFuture<AppendRowsResponse> future = writer.append(jsonArr, /*offset=*/ i * 10);
           AppendRowsResponse response = future.get();
         }
+        // Finalize the stream after use.
+        FinalizeWriteStreamRequest finalizeWriteStreamRequest =
+            FinalizeWriteStreamRequest.newBuilder().setName(writeStream.getName()).build();
+        client.finalizeWriteStream(finalizeWriteStreamRequest);
       }
       System.out.println("Appended records successfully.");
     } catch (ExecutionException e) {

samples/snippets/src/main/java/com/example/bigquerystorage/WriteToDefaultStream.java

@@ -56,7 +56,8 @@ public static void writeToDefaultStream(String projectId, String datasetName, St
     // https://googleapis.dev/java/google-cloud-bigquerystorage/latest/com/google/cloud/bigquery/storage/v1beta2/JsonStreamWriter.html
     try (JsonStreamWriter writer =
         JsonStreamWriter.newBuilder(parentTable.toString(), tableSchema).build()) {
-      // Write two batches to the stream, each with 10 JSON records.
+      // Write two batches to the stream, each with 10 JSON records. A writer should be used for as
+      // much writes as possible. Creating a writer for just one write is an antipattern.
       for (int i = 0; i < 2; i++) {
         // Create a JSON object that is compatible with the table schema.
         JSONArray jsonArr = new JSONArray();