> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-fix-878-websocket-update-format.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ContractFilter

> This class contains utilities to decode a CreatedEvent and create an UpdateFormat, a TransactionFormat or a EventFormat by provided parties. It can only be instantiated with a subtype of ContractCompanion

## ContractFilter

Upstream docs: [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html)

**Signature**

```text theme={"theme":{"light":"github-light","dark":"github-dark"}}
public final class ContractFilter<Ct> extends Object
```

**Members**

| Docs                                                                                                                                                                                                                                   | Member                                                 | Introduced | Deprecated | Removed |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------ | ---------- | ---------- | ------- |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#eventFormat%28java.util.Optional%29)                                                                                       | `eventFormat(Optional<Set<String>>)`                   | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#of%28com.daml.ledger.javaapi.data.codegen.ContractCompanion%29)                                                            | `of(ContractCompanion<Ct, ?, ?>)`                      | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#of%28com.daml.ledger.javaapi.data.codegen.InterfaceCompanion%29)                                                           | `of(InterfaceCompanion<?, Cid, View>)`                 | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#toContract%28com.daml.ledger.javaapi.data.CreatedEvent%29)                                                                 | `toContract(CreatedEvent)`                             | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#toContract%28com.daml.ledger.javaapi.data.CreatedEvent,com.daml.ledger.javaapi.data.codegen.UnknownTrailingFieldPolicy%29) | `toContract(CreatedEvent, UnknownTrailingFieldPolicy)` | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#transactionFormat%28java.util.Optional%29)                                                                                 | `transactionFormat(Optional<Set<String>>)`             | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#updateFormat%28java.util.Optional%29)                                                                                      | `updateFormat(Optional<Set<String>>)`                  | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#withIncludeCreatedEventBlob%28boolean%29)                                                                                  | `withIncludeCreatedEventBlob(boolean)`                 | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#withTransactionShape%28com.daml.ledger.javaapi.data.TransactionShape%29)                                                   | `withTransactionShape(TransactionShape)`               | `3.4.8`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/javaapi/data/ContractFilter.html#withVerbose%28boolean%29)                                                                                                  | `withVerbose(boolean)`                                 | `3.4.8`    | -          | -       |