diff --git a/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/BigQuery.java b/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/BigQuery.java
index d229a26b5bae..bab3d3370518 100644
--- a/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/BigQuery.java
+++ b/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/BigQuery.java
@@ -671,7 +671,7 @@ public int hashCode() {
    * <p>Example of deleting a dataset from its id, even if non-empty.
    * <pre> {@code
    * String datasetName = "my_dataset_name";
-   * Boolean deleted = bigquery.delete(datasetName, DatasetDeleteOption.deleteContents());
+   * boolean deleted = bigquery.delete(datasetName, DatasetDeleteOption.deleteContents());
    * if (deleted) {
    *   // the dataset was deleted
    * } else {
@@ -692,7 +692,7 @@ public int hashCode() {
    * String projectId = "my_project_id";
    * String datasetName = "my_dataset_name";
    * DatasetId datasetId = DatasetId.of(projectId, datasetName);
-   * Boolean deleted = bigquery.delete(datasetId, DatasetDeleteOption.deleteContents());
+   * boolean deleted = bigquery.delete(datasetId, DatasetDeleteOption.deleteContents());
    * if (deleted) {
    *   // the dataset was deleted
    * } else {
@@ -712,7 +712,7 @@ public int hashCode() {
    * <pre> {@code
    * String datasetName = "my_dataset_name";
    * String tableName = "my_table_name";
-   * Boolean deleted = bigquery.delete(datasetName, tableName);
+   * boolean deleted = bigquery.delete(datasetName, tableName);
    * if (deleted) {
    *   // the table was deleted
    * } else {
@@ -734,7 +734,7 @@ public int hashCode() {
    * String datasetName = "my_dataset_name";
    * String tableName = "my_table_name";
    * TableId tableId = TableId.of(projectId, datasetName, tableName);
-   * Boolean deleted = bigquery.delete(tableId);
+   * boolean deleted = bigquery.delete(tableId);
    * if (deleted) {
    *   // the table was deleted
    * } else {
diff --git a/google-cloud-examples/src/main/java/com/google/cloud/examples/bigquery/snippets/BigQuerySnippets.java b/google-cloud-examples/src/main/java/com/google/cloud/examples/bigquery/snippets/BigQuerySnippets.java
index 2763493c1a3a..ab491ff2a5e3 100644
--- a/google-cloud-examples/src/main/java/com/google/cloud/examples/bigquery/snippets/BigQuerySnippets.java
+++ b/google-cloud-examples/src/main/java/com/google/cloud/examples/bigquery/snippets/BigQuerySnippets.java
@@ -168,9 +168,9 @@ public Page<Dataset> listDatasets(String projectId) {
    */
   // [TARGET delete(String, DatasetDeleteOption...)]
   // [VARIABLE "my_dataset_name"]
-  public Boolean deleteDataset(String datasetName) {
+  public boolean deleteDataset(String datasetName) {
     // [START ]
-    Boolean deleted = bigquery.delete(datasetName, DatasetDeleteOption.deleteContents());
+    boolean deleted = bigquery.delete(datasetName, DatasetDeleteOption.deleteContents());
     if (deleted) {
       // the dataset was deleted
     } else {
@@ -186,10 +186,10 @@ public Boolean deleteDataset(String datasetName) {
   // [TARGET delete(DatasetId, DatasetDeleteOption...)]
   // [VARIABLE "my_project_id"]
   // [VARIABLE "my_dataset_name"]
-  public Boolean deleteDatasetFromId(String projectId, String datasetName) {
+  public boolean deleteDatasetFromId(String projectId, String datasetName) {
     // [START bigquery_delete_dataset]
     DatasetId datasetId = DatasetId.of(projectId, datasetName);
-    Boolean deleted = bigquery.delete(datasetId, DatasetDeleteOption.deleteContents());
+    boolean deleted = bigquery.delete(datasetId, DatasetDeleteOption.deleteContents());
     if (deleted) {
       // the dataset was deleted
     } else {
@@ -205,9 +205,9 @@ public Boolean deleteDatasetFromId(String projectId, String datasetName) {
   // [TARGET delete(String, String)]
   // [VARIABLE "my_dataset_name"]
   // [VARIABLE "my_table_name"]
-  public Boolean deleteTable(String datasetName, String tableName) {
+  public boolean deleteTable(String datasetName, String tableName) {
     // [START ]
-    Boolean deleted = bigquery.delete(datasetName, tableName);
+    boolean deleted = bigquery.delete(datasetName, tableName);
     if (deleted) {
       // the table was deleted
     } else {
@@ -224,10 +224,10 @@ public Boolean deleteTable(String datasetName, String tableName) {
   // [VARIABLE "my_project_id"]
   // [VARIABLE "my_dataset_name"]
   // [VARIABLE "my_table_name"]
-  public Boolean deleteTableFromId(String projectId, String datasetName, String tableName) {
+  public boolean deleteTableFromId(String projectId, String datasetName, String tableName) {
     // [START bigquery_delete_table]
     TableId tableId = TableId.of(projectId, datasetName, tableName);
-    Boolean deleted = bigquery.delete(tableId);
+    boolean deleted = bigquery.delete(tableId);
     if (deleted) {
       // the table was deleted
     } else {