docs: make delete examples consistent with other languages

README.md

@@ -504,9 +504,10 @@ Samples are in the [`samples/`](https://github.com/googleapis/java-bigtable/tree
 | Write Simple | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/WriteSimple.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/WriteSimple.java) |
 | Batch Delete Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/BatchDeleteExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/BatchDeleteExample.java) |
 | Conditional Delete Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/ConditionalDeleteExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/ConditionalDeleteExample.java) |
-| Delete Column Cells Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteColumnCellsExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteColumnCellsExample.java) |
 | Delete Column Family Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteColumnFamilyExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteColumnFamilyExample.java) |
-| Delete Row Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteRowExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteRowExample.java) |
+| Delete From Column Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromColumnExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromColumnExample.java) |
+| Delete From Column Family Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromColumnFamilyExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromColumnFamilyExample.java) |
+| Delete From Row Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromRowExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromRowExample.java) |
 | Delete Table Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteTableExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteTableExample.java) |
 | Drop Row Range Example | [source code](https://github.com/googleapis/java-bigtable/blob/main/samples/snippets/src/main/java/com/example/bigtable/deletes/DropRowRangeExample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-bigtable&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/bigtable/deletes/DropRowRangeExample.java) |
 

samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteColumnFamilyExample.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 Google LLC
+ * Copyright 2023 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,16 +17,18 @@
 package com.example.bigtable.deletes;
 
 // [START bigtable_delete_column_family]
-import com.google.cloud.bigtable.data.v2.BigtableDataClient;
-import com.google.cloud.bigtable.data.v2.models.RowMutation;
+import com.google.cloud.bigtable.admin.v2.BigtableTableAdminClient;
+import com.google.cloud.bigtable.admin.v2.models.ModifyColumnFamiliesRequest;
 import java.io.IOException;
 
 public class DeleteColumnFamilyExample {
-  public void deleteColumnFamily(String projectId, String instanceId, String tableId)
-      throws IOException {
-    try (BigtableDataClient dataClient = BigtableDataClient.create(projectId, instanceId)) {
-      dataClient.mutateRow(
-          RowMutation.create(tableId, "phone#5c10102#20190501").deleteFamily("stats_summary"));
+  public void deleteColumnFamily(
+      String projectId, String instanceId, String tableId, String columnFamily) throws IOException {
+    try (BigtableTableAdminClient tableAdminClient =
+        BigtableTableAdminClient.create(projectId, instanceId)) {
+      ModifyColumnFamiliesRequest modifyColumnFamiliesRequest =
+          ModifyColumnFamiliesRequest.of(tableId).dropFamily(columnFamily);
+      tableAdminClient.modifyFamilies(modifyColumnFamiliesRequest);
     }
   }
 }

samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteColumnCellsExample.java → samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromColumnExample.java

@@ -22,8 +22,8 @@
 import com.google.cloud.bigtable.data.v2.models.RowMutation;
 import java.io.IOException;
 
-public class DeleteColumnCellsExample {
-  public void deleteColumnCells(String projectId, String instanceId, String tableId)
+public class DeleteFromColumnExample {
+  public void deleteFromColumnCells(String projectId, String instanceId, String tableId)
       throws IOException {
     try (BigtableDataClient dataClient = BigtableDataClient.create(projectId, instanceId)) {
       Mutation mutation = Mutation.create().deleteCells("cell_plan", "data_plan_01gb");

samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromColumnFamilyExample.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.bigtable.deletes;
+
+// [START bigtable_delete_from_column_family]
+import com.google.cloud.bigtable.data.v2.BigtableDataClient;
+import com.google.cloud.bigtable.data.v2.models.RowMutation;
+import java.io.IOException;
+
+public class DeleteFromColumnFamilyExample {
+  public void deleteFromColumnFamily(String projectId, String instanceId, String tableId)
+      throws IOException {
+    try (BigtableDataClient dataClient = BigtableDataClient.create(projectId, instanceId)) {
+      dataClient.mutateRow(
+          RowMutation.create(tableId, "phone#5c10102#20190501").deleteFamily("stats_summary"));
+    }
+  }
+}
+// [END bigtable_delete_from_column_family]

samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteRowExample.java → samples/snippets/src/main/java/com/example/bigtable/deletes/DeleteFromRowExample.java

@@ -22,8 +22,9 @@
 import com.google.cloud.bigtable.data.v2.models.RowMutation;
 import java.io.IOException;
 
-public class DeleteRowExample {
-  public void deleteRow(String projectId, String instanceId, String tableId) throws IOException {
+public class DeleteFromRowExample {
+  public void deleteFromRow(String projectId, String instanceId, String tableId)
+      throws IOException {
     try (BigtableDataClient dataClient = BigtableDataClient.create(projectId, instanceId)) {
       Mutation mutation = Mutation.create().deleteRow();
       dataClient.mutateRow(RowMutation.create(tableId, "phone#4c410523#20190501", mutation));

samples/snippets/src/test/java/com/example/bigtable/deletes/DeletesTest.java

@@ -63,8 +63,8 @@ public void test1_testDeleteFromColumn() throws IOException {
 
     Truth.assertThat(cells).isNotEmpty();
 
-    DeleteColumnCellsExample deleteColumnCellsExample = new DeleteColumnCellsExample();
-    deleteColumnCellsExample.deleteColumnCells(projectId, instanceId, TABLE_ID);
+    DeleteFromColumnExample deleteFromColumnExample = new DeleteFromColumnExample();
+    deleteFromColumnExample.deleteFromColumnCells(projectId, instanceId, TABLE_ID);
     row = bigtableDataClient.readRow(TABLE_ID, rowKey);
     List<RowCell> cellsAfterDelete = row.getCells(COLUMN_FAMILY_NAME_PLAN, qualifier);
 
@@ -78,8 +78,8 @@ public void test2_testDeleteFromRow() throws IOException {
 
     Truth.assertThat(row).isNotNull();
 
-    DeleteRowExample deleteRowExample = new DeleteRowExample();
-    deleteRowExample.deleteRow(projectId, instanceId, TABLE_ID);
+    DeleteFromRowExample deleteFromRowExample = new DeleteFromRowExample();
+    deleteFromRowExample.deleteFromRow(projectId, instanceId, TABLE_ID);
     row = bigtableDataClient.readRow(TABLE_ID, rowKey);
 
     Truth.assertThat(row).isNull();
@@ -143,23 +143,38 @@ public void test5_testDropRowRange() throws IOException {
   }
 
   @Test
-  public void test6_testDeleteColumnFamily() throws IOException {
+  public void test6_testDeleteFromColumnFamily() throws IOException {
     String rowKey = "phone#5c10102#20190501";
     Row row = bigtableDataClient.readRow(TABLE_ID, rowKey);
     List<RowCell> cells = row.getCells(COLUMN_FAMILY_NAME_STATS);
 
     Truth.assertThat(cells).isNotEmpty();
 
-    DeleteColumnFamilyExample deleteColumnFamilyExample = new DeleteColumnFamilyExample();
-    deleteColumnFamilyExample.deleteColumnFamily(projectId, instanceId, TABLE_ID);
+    DeleteFromColumnFamilyExample deleteFromColumnFamilyExample =
+        new DeleteFromColumnFamilyExample();
+    deleteFromColumnFamilyExample.deleteFromColumnFamily(projectId, instanceId, TABLE_ID);
     row = bigtableDataClient.readRow(TABLE_ID, rowKey);
     List<RowCell> cellsAfterDelete = row.getCells(COLUMN_FAMILY_NAME_STATS);
 
     Truth.assertThat(cellsAfterDelete).isEmpty();
   }
 
   @Test
-  public void test7_testDeleteTable() throws IOException {
+  public void test7_testDeleteColumnFamily() throws IOException {
+    try (BigtableTableAdminClient tableAdminClient =
+        BigtableTableAdminClient.create(projectId, instanceId)) {
+      Truth.assertThat(tableAdminClient.getTable(TABLE_ID).getColumnFamilies().size()).isEqualTo(2);
+
+      DeleteColumnFamilyExample deleteColumnFamilyExample = new DeleteColumnFamilyExample();
+      deleteColumnFamilyExample.deleteColumnFamily(
+          projectId, instanceId, TABLE_ID, COLUMN_FAMILY_NAME_STATS);
+
+      Truth.assertThat(tableAdminClient.getTable(TABLE_ID).getColumnFamilies().size()).isEqualTo(1);
+    }
+  }
+
+  @Test
+  public void test8_testDeleteTable() throws IOException {
     try (BigtableTableAdminClient tableAdminClient =
         BigtableTableAdminClient.create(projectId, instanceId)) {
       Truth.assertThat(tableAdminClient.exists(TABLE_ID)).isTrue();