# Class Key.Builder (3.1.0)

3.1.0 (latest) 2.40.0 2.37.0 2.36.0 2.34.0 2.33.3 2.32.3 2.31.4 2.30.0 2.29.1 2.28.2 2.27.1 2.26.4 2.25.2 2.24.3 2.23.0 2.22.0 2.21.3 2.20.2 2.19.2 2.18.5 2.17.6

    public static final class Key.Builder extends BaseKey.Builder<Key.Builder>

## Inheritance

[java.lang.Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \> [BaseKey.Builder](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder) \> Key.Builder

## Inherited Members

[BaseKey.Builder.addAncestor(PathElement)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_addAncestor_com_google_cloud_datastore_PathElement_) [BaseKey.Builder.addAncestors(PathElement,PathElement)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_addAncestors_com_google_cloud_datastore_PathElement_com_google_cloud_datastore_PathElement____) [BaseKey.Builder.addAncestors(Iterable\<PathElement\>)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_addAncestors_java_lang_Iterable_com_google_cloud_datastore_PathElement__) [BaseKey.Builder.build()](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_build__) [BaseKey.Builder.setDatabaseId(String)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_setDatabaseId_java_lang_String_) [BaseKey.Builder.setKind(String)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_setKind_java_lang_String_) [BaseKey.Builder.setNamespace(String)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_setNamespace_java_lang_String_) [BaseKey.Builder.setProjectId(String)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_setProjectId_java_lang_String_) [Object.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--) [Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-) [Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) [Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) [Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--) [Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) [Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) [Object.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) [Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) [Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) [Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)

## Methods

### build()

    public Key build()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.Key` |   |

**Overrides** [BaseKey.Builder\<B\>.build()](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.BaseKey.Builder#com_google_cloud_datastore_BaseKey_Builder_build__)

### setId(long id)

    public Key.Builder setId(long id)

Sets the ID of this key.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `id` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.Key.Builder` |   |

### setName(String name)

    public Key.Builder setName(String name)

Sets the name of this key.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `name` | `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.Key.Builder` |   |