> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-generated-references-ledger-bindings-update.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# CommandsOuterClass.ExerciseByKeyCommand.Builder

> Exercise a choice on an existing contract specified by its key. Protobuf type com.daml.ledger.api.v2.ExerciseByKeyCommand

## CommandsOuterClass.ExerciseByKeyCommand.Builder

Upstream docs: [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html)

**Signature**

```text theme={"theme":{"light":"github-light","dark":"github-dark"}}
public static final class CommandsOuterClass.ExerciseByKeyCommand.Builder extends com.google.protobuf.GeneratedMessageV3.Builder<CommandsOuterClass.ExerciseByKeyCommand.Builder> implements CommandsOuterClass.ExerciseByKeyCommandOrBuilder
```

**Members**

| Docs                                                                                                                                                                                                                                  | Member                                                       | Introduced | Deprecated | Removed |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------ | ---------- | ---------- | ------- |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#addRepeatedField%28com.google.protobuf.Descriptors.FieldDescriptor,java.lang.Object%29)        | `addRepeatedField(Descriptors.FieldDescriptor, Object)`      | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#build%28%29)                                                                                   | `build()`                                                    | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#buildPartial%28%29)                                                                            | `buildPartial()`                                             | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clear%28%29)                                                                                   | `clear()`                                                    | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clearChoice%28%29)                                                                             | `clearChoice()`                                              | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clearChoiceArgument%28%29)                                                                     | `clearChoiceArgument()`                                      | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clearContractKey%28%29)                                                                        | `clearContractKey()`                                         | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clearField%28com.google.protobuf.Descriptors.FieldDescriptor%29)                               | `clearField(Descriptors.FieldDescriptor)`                    | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clearOneof%28com.google.protobuf.Descriptors.OneofDescriptor%29)                               | `clearOneof(Descriptors.OneofDescriptor)`                    | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clearTemplateId%28%29)                                                                         | `clearTemplateId()`                                          | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#clone%28%29)                                                                                   | `clone()`                                                    | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getChoice%28%29)                                                                               | `getChoice()`                                                | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getChoiceArgument%28%29)                                                                       | `getChoiceArgument()`                                        | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getChoiceArgumentBuilder%28%29)                                                                | `getChoiceArgumentBuilder()`                                 | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getChoiceArgumentOrBuilder%28%29)                                                              | `getChoiceArgumentOrBuilder()`                               | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getChoiceBytes%28%29)                                                                          | `getChoiceBytes()`                                           | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getContractKey%28%29)                                                                          | `getContractKey()`                                           | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getContractKeyBuilder%28%29)                                                                   | `getContractKeyBuilder()`                                    | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getContractKeyOrBuilder%28%29)                                                                 | `getContractKeyOrBuilder()`                                  | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getDefaultInstanceForType%28%29)                                                               | `getDefaultInstanceForType()`                                | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getDescriptor%28%29)                                                                           | `getDescriptor()`                                            | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getDescriptorForType%28%29)                                                                    | `getDescriptorForType()`                                     | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getTemplateId%28%29)                                                                           | `getTemplateId()`                                            | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getTemplateIdBuilder%28%29)                                                                    | `getTemplateIdBuilder()`                                     | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#getTemplateIdOrBuilder%28%29)                                                                  | `getTemplateIdOrBuilder()`                                   | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#hasChoiceArgument%28%29)                                                                       | `hasChoiceArgument()`                                        | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#hasContractKey%28%29)                                                                          | `hasContractKey()`                                           | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#hasTemplateId%28%29)                                                                           | `hasTemplateId()`                                            | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#internalGetFieldAccessorTable%28%29)                                                           | `internalGetFieldAccessorTable()`                            | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#isInitialized%28%29)                                                                           | `isInitialized()`                                            | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#mergeChoiceArgument%28com.daml.ledger.api.v2.ValueOuterClass.Value%29)                         | `mergeChoiceArgument(ValueOuterClass.Value)`                 | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#mergeContractKey%28com.daml.ledger.api.v2.ValueOuterClass.Value%29)                            | `mergeContractKey(ValueOuterClass.Value)`                    | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#mergeFrom%28com.google.protobuf.CodedInputStream,com.google.protobuf.ExtensionRegistryLite%29) | `mergeFrom(CodedInputStream, ExtensionRegistryLite)`         | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#mergeFrom%28com.daml.ledger.api.v2.CommandsOuterClass.ExerciseByKeyCommand%29)                 | `mergeFrom(CommandsOuterClass.ExerciseByKeyCommand)`         | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#mergeFrom%28com.google.protobuf.Message%29)                                                    | `mergeFrom(Message)`                                         | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#mergeTemplateId%28com.daml.ledger.api.v2.ValueOuterClass.Identifier%29)                        | `mergeTemplateId(ValueOuterClass.Identifier)`                | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#mergeUnknownFields%28com.google.protobuf.UnknownFieldSet%29)                                   | `mergeUnknownFields(UnknownFieldSet)`                        | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setChoice%28java.lang.String%29)                                                               | `setChoice(String)`                                          | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setChoiceArgument%28com.daml.ledger.api.v2.ValueOuterClass.Value%29)                           | `setChoiceArgument(ValueOuterClass.Value)`                   | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setChoiceArgument%28com.daml.ledger.api.v2.ValueOuterClass.Value.Builder%29)                   | `setChoiceArgument(ValueOuterClass.Value.Builder)`           | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setChoiceBytes%28com.google.protobuf.ByteString%29)                                            | `setChoiceBytes(ByteString)`                                 | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setContractKey%28com.daml.ledger.api.v2.ValueOuterClass.Value%29)                              | `setContractKey(ValueOuterClass.Value)`                      | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setContractKey%28com.daml.ledger.api.v2.ValueOuterClass.Value.Builder%29)                      | `setContractKey(ValueOuterClass.Value.Builder)`              | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setField%28com.google.protobuf.Descriptors.FieldDescriptor,java.lang.Object%29)                | `setField(Descriptors.FieldDescriptor, Object)`              | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setRepeatedField%28com.google.protobuf.Descriptors.FieldDescriptor,int,java.lang.Object%29)    | `setRepeatedField(Descriptors.FieldDescriptor, int, Object)` | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setTemplateId%28com.daml.ledger.api.v2.ValueOuterClass.Identifier%29)                          | `setTemplateId(ValueOuterClass.Identifier)`                  | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setTemplateId%28com.daml.ledger.api.v2.ValueOuterClass.Identifier.Builder%29)                  | `setTemplateId(ValueOuterClass.Identifier.Builder)`          | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/CommandsOuterClass.ExerciseByKeyCommand.Builder.html#setUnknownFields%28com.google.protobuf.UnknownFieldSet%29)                                     | `setUnknownFields(UnknownFieldSet)`                          | `3.5.6`    | -          | -       |