docs(samples): fix checkstyle errors (#682)

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- [X] Code coverage does not decrease (if any source code was changed)
- [X] Appropriate docs were updated (if necessary)

Fixes #681

samples/snippets/src/main/java/com/example/bigquery/AuthorizedViewTutorial.java

@@ -57,9 +57,8 @@ public static void authorizedViewTutorial(
       // [START bigquery_authorized_view_tutorial]
       // [START bigquery_avt_create_source_dataset]
       // Create a source dataset to store your table.
-      Dataset sourceDataset = bigquery.create(DatasetInfo.of(sourceDatasetId));
+      final Dataset sourceDataset = bigquery.create(DatasetInfo.of(sourceDatasetId));
       // [END bigquery_avt_create_source_dataset]
-
       // [START bigquery_avt_create_source_table]
       // Populate a source table
       String tableQuery =
@@ -72,32 +71,27 @@ public static void authorizedViewTutorial(
               .build();
       bigquery.query(queryConfig);
       // [END bigquery_avt_create_source_table]
-
       // [START bigquery_avt_create_shared_dataset]
       // Create a separate dataset to store your view
       Dataset sharedDataset = bigquery.create(DatasetInfo.of(sharedDatasetId));
       // [END bigquery_avt_create_shared_dataset]
-
       // [START bigquery_avt_create_view]
       // Create the view in the new dataset
       String viewQuery =
           String.format(
-              "SELECT commit, author.name as author, committer.name as committer, repo_name FROM %s.%s.%s",
+              "SELECT commit, author.name as author, "
+                  + "committer.name as committer, repo_name FROM %s.%s.%s",
               projectId, sourceDatasetId, sourceTableId);
-
       ViewDefinition viewDefinition = ViewDefinition.of(viewQuery);
-
       Table view =
           bigquery.create(TableInfo.of(TableId.of(sharedDatasetId, sharedViewId), viewDefinition));
       // [END bigquery_avt_create_view]
-
       // [START bigquery_avt_shared_dataset_access]
       // Assign access controls to the dataset containing the view
       List<Acl> viewAcl = new ArrayList<>(sharedDataset.getAcl());
       viewAcl.add(Acl.of(new Acl.Group("example-analyst-group@google.com"), Acl.Role.READER));
       sharedDataset.toBuilder().setAcl(viewAcl).build().update();
       // [END bigquery_avt_shared_dataset_access]
-
       // [START bigquery_avt_source_dataset_access]
       // Authorize the view to access the source dataset
       List<Acl> srcAcl = new ArrayList<>(sourceDataset.getAcl());

samples/snippets/src/main/java/com/example/bigquery/CopyTableCMEK.java → samples/snippets/src/main/java/com/example/bigquery/CopyTableCmek.java

@@ -27,7 +27,7 @@
 import com.google.cloud.bigquery.TableId;
 
 // Sample to copy a cmek table
-public class CopyTableCMEK {
+public class CopyTableCmek {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
@@ -38,11 +38,11 @@ public static void main(String[] args) {
     String kmsKeyName = "MY_KMS_KEY_NAME";
     EncryptionConfiguration encryption =
         EncryptionConfiguration.newBuilder().setKmsKeyName(kmsKeyName).build();
-    copyTableCMEK(
+    copyTableCmek(
         sourceDatasetName, sourceTableId, destinationDatasetName, destinationTableId, encryption);
   }
 
-  public static void copyTableCMEK(
+  public static void copyTableCmek(
       String sourceDatasetName,
       String sourceTableId,
       String destinationDatasetName,

samples/snippets/src/main/java/com/example/bigquery/CreateModel.java

@@ -43,7 +43,7 @@ public static void main(String[] args) {
             + "learn_rate=0.4, "
             + "learn_rate_strategy='constant' "
             + ") AS ( "
-            + "	SELECT 'a' AS f1, 2.0 AS label "
+            + "SELECT 'a' AS f1, 2.0 AS label "
             + "UNION ALL "
             + "SELECT 'b' AS f1, 3.8 AS label "
             + ")";

samples/snippets/src/main/java/com/example/bigquery/CreateRoutineDDL.java → samples/snippets/src/main/java/com/example/bigquery/CreateRoutineDdl.java

@@ -25,7 +25,7 @@
 import com.google.cloud.bigquery.QueryJobConfiguration;
 
 // Sample to create a routine using DDL
-public class CreateRoutineDDL {
+public class CreateRoutineDdl {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
@@ -41,11 +41,12 @@ public static void main(String[] args) {
             + "."
             + routineId
             + "`"
-            + "( arr ARRAY<STRUCT<name STRING, val INT64>>) AS ( (SELECT SUM(IF(elem.name = \"foo\",elem.val,null)) FROM UNNEST(arr) AS elem))";
-    createRoutineDDL(sql);
+            + "( arr ARRAY<STRUCT<name STRING, val INT64>>) AS "
+            + "( (SELECT SUM(IF(elem.name = \"foo\",elem.val,null)) FROM UNNEST(arr) AS elem))";
+    createRoutineDdl(sql);
   }
 
-  public static void createRoutineDDL(String sql) {
+  public static void createRoutineDdl(String sql) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests.

samples/snippets/src/main/java/com/example/bigquery/CreateTableCMEK.java → samples/snippets/src/main/java/com/example/bigquery/CreateTableCmek.java

@@ -30,7 +30,7 @@
 import com.google.cloud.bigquery.TableInfo;
 
 // Sample to create a cmek table
-public class CreateTableCMEK {
+public class CreateTableCmek {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
@@ -44,10 +44,10 @@ public static void main(String[] args) {
     // i.e. projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{cryptoKey}
     EncryptionConfiguration encryption =
         EncryptionConfiguration.newBuilder().setKmsKeyName(kmsKeyName).build();
-    createTableCMEK(datasetName, tableName, schema, encryption);
+    createTableCmek(datasetName, tableName, schema, encryption);
   }
 
-  public static void createTableCMEK(
+  public static void createTableCmek(
       String datasetName, String tableName, Schema schema, EncryptionConfiguration configuration) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created

samples/snippets/src/main/java/com/example/bigquery/DDLCreateView.java → samples/snippets/src/main/java/com/example/bigquery/DdlCreateView.java

@@ -25,7 +25,7 @@
 import com.google.cloud.bigquery.QueryJobConfiguration;
 
 // Sample to create a view using DDL
-public class DDLCreateView {
+public class DdlCreateView {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.

samples/snippets/src/main/java/com/example/bigquery/GrantViewAccess.java

@@ -47,21 +47,17 @@ public static void grantViewAccess(String srcDatasetId, String viewDatasetId, St
       Dataset srcDataset = bigquery.getDataset(DatasetId.of(srcDatasetId));
       Dataset viewDataset = bigquery.getDataset(DatasetId.of(viewDatasetId));
       Table view = viewDataset.get(viewId);
-
       // First, we'll add a group to the ACL for the dataset containing the view. This will allow
       // users within that group to query the view, but they must have direct access to any tables
       // referenced by the view.
-      List<Acl> viewAcl = new ArrayList<>();
-      viewAcl.addAll(viewDataset.getAcl());
+      List<Acl> viewAcl = new ArrayList<>(viewDataset.getAcl());
       viewAcl.add(Acl.of(new Acl.Group("example-analyst-group@google.com"), Acl.Role.READER));
       viewDataset.toBuilder().setAcl(viewAcl).build().update();
-
       // Now, we'll authorize a specific view against a source dataset, delegating access
       // enforcement. Once this has been completed, members of the group previously added to the
       // view dataset's ACL no longer require access to the source dataset to successfully query the
       // view
-      List<Acl> srcAcl = new ArrayList<>();
-      srcAcl.addAll(srcDataset.getAcl());
+      List<Acl> srcAcl = new ArrayList<>(srcDataset.getAcl());
       srcAcl.add(Acl.of(new Acl.View(view.getTableId())));
       srcDataset.toBuilder().setAcl(srcAcl).build().update();
       System.out.println("Grant view access successfully");

samples/snippets/src/main/java/com/example/bigquery/InsertingDataTypes.java

@@ -41,56 +41,56 @@ public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
     String datasetName = "MY_DATASET_NAME";
     String tableName = "MY_TABLE_NAME";
-
-    // Inserting data types
-    Field name = Field.of("name", StandardSQLTypeName.STRING);
-    Field age = Field.of("age", StandardSQLTypeName.INT64);
-    Field school =
-        Field.newBuilder("school", StandardSQLTypeName.BYTES).setMode(Field.Mode.REPEATED).build();
-    Field location = Field.of("location", StandardSQLTypeName.GEOGRAPHY);
-    Field measurements =
-        Field.newBuilder("measurements", StandardSQLTypeName.FLOAT64)
-            .setMode(Field.Mode.REPEATED)
-            .build();
-    Field day = Field.of("day", StandardSQLTypeName.DATE);
-    Field firstTime = Field.of("firstTime", StandardSQLTypeName.DATETIME);
-    Field secondTime = Field.of("secondTime", StandardSQLTypeName.TIME);
-    Field thirdTime = Field.of("thirdTime", StandardSQLTypeName.TIMESTAMP);
-    Field datesTime =
-        Field.of("datesTime", StandardSQLTypeName.STRUCT, day, firstTime, secondTime, thirdTime);
-    Schema schema = Schema.of(name, age, school, location, measurements, datesTime);
-
-    // Inserting Sample data
-    Map<String, Object> datesTimeContent = new HashMap<>();
-    datesTimeContent.put("day", "2019-1-12");
-    datesTimeContent.put("firstTime", "2019-02-17 11:24:00.000");
-    datesTimeContent.put("secondTime", "14:00:00");
-    datesTimeContent.put("thirdTime", "2020-04-27T18:07:25.356Z");
-
-    Map<String, Object> rowContent = new HashMap<>();
-    rowContent.put("name", "Tom");
-    rowContent.put("age", 30);
-    rowContent.put("school", "Test University".getBytes());
-    rowContent.put("location", "POINT(1 2)");
-    rowContent.put("measurements", new Float[] {50.05f, 100.5f});
-    rowContent.put("datesTime", datesTimeContent);
-
-    insertingDataTypes(datasetName, tableName, schema, rowContent);
+    insertingDataTypes(datasetName, tableName);
   }
 
-  public static void insertingDataTypes(
-      String datasetName, String tableName, Schema schema, Map<String, Object> rowContent) {
+  public static void insertingDataTypes(String datasetName, String tableName) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests.
       BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();
 
+      // Inserting data types
+      Field name = Field.of("name", StandardSQLTypeName.STRING);
+      Field age = Field.of("age", StandardSQLTypeName.INT64);
+      Field school =
+          Field.newBuilder("school", StandardSQLTypeName.BYTES)
+              .setMode(Field.Mode.REPEATED)
+              .build();
+      Field location = Field.of("location", StandardSQLTypeName.GEOGRAPHY);
+      Field measurements =
+          Field.newBuilder("measurements", StandardSQLTypeName.FLOAT64)
+              .setMode(Field.Mode.REPEATED)
+              .build();
+      Field day = Field.of("day", StandardSQLTypeName.DATE);
+      Field firstTime = Field.of("firstTime", StandardSQLTypeName.DATETIME);
+      Field secondTime = Field.of("secondTime", StandardSQLTypeName.TIME);
+      Field thirdTime = Field.of("thirdTime", StandardSQLTypeName.TIMESTAMP);
+      Field datesTime =
+          Field.of("datesTime", StandardSQLTypeName.STRUCT, day, firstTime, secondTime, thirdTime);
+      Schema schema = Schema.of(name, age, school, location, measurements, datesTime);
+
       TableId tableId = TableId.of(datasetName, tableName);
       TableDefinition tableDefinition = StandardTableDefinition.of(schema);
       TableInfo tableInfo = TableInfo.newBuilder(tableId, tableDefinition).build();
 
       bigquery.create(tableInfo);
 
+      // Inserting Sample data
+      Map<String, Object> datesTimeContent = new HashMap<>();
+      datesTimeContent.put("day", "2019-1-12");
+      datesTimeContent.put("firstTime", "2019-02-17 11:24:00.000");
+      datesTimeContent.put("secondTime", "14:00:00");
+      datesTimeContent.put("thirdTime", "2020-04-27T18:07:25.356Z");
+
+      Map<String, Object> rowContent = new HashMap<>();
+      rowContent.put("name", "Tom");
+      rowContent.put("age", 30);
+      rowContent.put("school", "Test University".getBytes());
+      rowContent.put("location", "POINT(1 2)");
+      rowContent.put("measurements", new Float[] {50.05f, 100.5f});
+      rowContent.put("datesTime", datesTimeContent);
+
       InsertAllResponse response =
           bigquery.insertAll(InsertAllRequest.newBuilder(tableId).addRow(rowContent).build());
 

samples/snippets/src/main/java/com/example/bigquery/LoadAvroFromGCS.java → samples/snippets/src/main/java/com/example/bigquery/LoadAvroFromGcs.java

@@ -27,17 +27,17 @@
 import com.google.cloud.bigquery.TableId;
 
 // Sample to load Avro data from Cloud Storage into a new BigQuery table
-public class LoadAvroFromGCS {
+public class LoadAvroFromGcs {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
     String datasetName = "MY_DATASET_NAME";
     String tableName = "MY_TABLE_NAME";
     String sourceUri = "gs://cloud-samples-data/bigquery/us-states/us-states.avro";
-    loadAvroFromGCS(datasetName, tableName, sourceUri);
+    loadAvroFromGcs(datasetName, tableName, sourceUri);
   }
 
-  public static void loadAvroFromGCS(String datasetName, String tableName, String sourceUri) {
+  public static void loadAvroFromGcs(String datasetName, String tableName, String sourceUri) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests.

samples/snippets/src/main/java/com/example/bigquery/LoadAvroFromGCSTruncate.java → samples/snippets/src/main/java/com/example/bigquery/LoadAvroFromGcsTruncate.java

@@ -27,17 +27,17 @@
 import com.google.cloud.bigquery.TableId;
 
 // Sample to overwrite the BigQuery table data by loading a AVRO file from GCS
-public class LoadAvroFromGCSTruncate {
+public class LoadAvroFromGcsTruncate {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
     String datasetName = "MY_DATASET_NAME";
     String tableName = "MY_TABLE_NAME";
     String sourceUri = "gs://cloud-samples-data/bigquery/us-states/us-states.avro";
-    loadAvroFromGCSTruncate(datasetName, tableName, sourceUri);
+    loadAvroFromGcsTruncate(datasetName, tableName, sourceUri);
   }
 
-  public static void loadAvroFromGCSTruncate(
+  public static void loadAvroFromGcsTruncate(
       String datasetName, String tableName, String sourceUri) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created

samples/snippets/src/main/java/com/example/bigquery/LoadCsvFromGCSAutodetect.java → samples/snippets/src/main/java/com/example/bigquery/LoadCsvFromGcsAutodetect.java

@@ -27,17 +27,17 @@
 import com.google.cloud.bigquery.TableId;
 
 // Sample to load CSV data with autodetect schema from Cloud Storage into a new BigQuery table
-public class LoadCsvFromGCSAutodetect {
+public class LoadCsvFromGcsAutodetect {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
     String datasetName = "MY_DATASET_NAME";
     String tableName = "MY_TABLE_NAME";
     String sourceUri = "gs://cloud-samples-data/bigquery/us-states/us-states.csv";
-    loadCsvFromGCSAutodetect(datasetName, tableName, sourceUri);
+    loadCsvFromGcsAutodetect(datasetName, tableName, sourceUri);
   }
 
-  public static void loadCsvFromGCSAutodetect(
+  public static void loadCsvFromGcsAutodetect(
       String datasetName, String tableName, String sourceUri) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created

samples/snippets/src/main/java/com/example/bigquery/LoadJsonFromGCS.java → samples/snippets/src/main/java/com/example/bigquery/LoadJsonFromGcs.java

@@ -30,7 +30,7 @@
 import com.google.cloud.bigquery.TableId;
 
 // Sample to load JSON data from Cloud Storage into a new BigQuery table
-public class LoadJsonFromGCS {
+public class LoadJsonFromGcs {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
@@ -41,10 +41,10 @@ public static void main(String[] args) {
         Schema.of(
             Field.of("name", StandardSQLTypeName.STRING),
             Field.of("post_abbr", StandardSQLTypeName.STRING));
-    loadJsonFromGCS(datasetName, tableName, sourceUri, schema);
+    loadJsonFromGcs(datasetName, tableName, sourceUri, schema);
   }
 
-  public static void loadJsonFromGCS(
+  public static void loadJsonFromGcs(
       String datasetName, String tableName, String sourceUri, Schema schema) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created

samples/snippets/src/main/java/com/example/bigquery/LoadJsonFromGCSAutodetect.java → samples/snippets/src/main/java/com/example/bigquery/LoadJsonFromGcsAutodetect.java

@@ -27,17 +27,17 @@
 import com.google.cloud.bigquery.TableId;
 
 // Sample to load JSON data with autodetect schema from Cloud Storage into a new BigQuery table
-public class LoadJsonFromGCSAutodetect {
+public class LoadJsonFromGcsAutodetect {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
     String datasetName = "MY_DATASET_NAME";
     String tableName = "MY_TABLE_NAME";
     String sourceUri = "gs://cloud-samples-data/bigquery/us-states/us-states.json";
-    loadJsonFromGCSAutodetect(datasetName, tableName, sourceUri);
+    loadJsonFromGcsAutodetect(datasetName, tableName, sourceUri);
   }
 
-  public static void loadJsonFromGCSAutodetect(
+  public static void loadJsonFromGcsAutodetect(
       String datasetName, String tableName, String sourceUri) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created

samples/snippets/src/main/java/com/example/bigquery/LoadJsonFromGCSCMEK.java → samples/snippets/src/main/java/com/example/bigquery/LoadJsonFromGcsCmek.java

@@ -28,7 +28,7 @@
 import com.google.cloud.bigquery.TableId;
 
 // Sample to load JSON data with configuration key from Cloud Storage into a new BigQuery table
-public class LoadJsonFromGCSCMEK {
+public class LoadJsonFromGcsCmek {
 
   public static void main(String[] args) {
     // TODO(developer): Replace these variables before running the sample.
@@ -39,10 +39,10 @@ public static void main(String[] args) {
     // i.e. projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{cryptoKey}
     EncryptionConfiguration encryption =
         EncryptionConfiguration.newBuilder().setKmsKeyName(kmsKeyName).build();
-    loadJsonFromGCSCMEK(datasetName, tableName, sourceUri, encryption);
+    loadJsonFromGcsCmek(datasetName, tableName, sourceUri, encryption);
   }
 
-  public static void loadJsonFromGCSCMEK(
+  public static void loadJsonFromGcsCmek(
       String datasetName, String tableName, String sourceUri, EncryptionConfiguration encryption) {
     try {
       // Initialize client that will be used to send requests. This client only needs to be created