A ClientStreamingCallable is an immutable object which is capable of making RPC calls to client
streaming API methods. Not all transports support streaming.
It is considered advanced usage for a user to create a ClientStreamingCallable themselves.
This class is intended to be created by a generated client class, and configured by instances of
StreamingCallSettings.Builder which are exposed through the client settings class.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eThis webpage details the \u003ccode\u003eClientStreamingCallable\u003c/code\u003e class in the Google API Client Libraries for Java, designed for client streaming RPC calls.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eClientStreamingCallable\u003c/code\u003e class is typically created by generated client classes and configured via \u003ccode\u003eStreamingCallSettings.Builder\u003c/code\u003e, and is for advanced usage.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of \u003ccode\u003eClientStreamingCallable\u003c/code\u003e is version 2.63.1, and there are multiple other versions available spanning from version 2.62.0 down to version 2.7.1.\u003c/p\u003e\n"],["\u003cp\u003eThe class offers methods to conduct client streaming calls, including \u003ccode\u003eclientStreamingCall\u003c/code\u003e which takes a \u003ccode\u003eApiStreamObserver\u003c/code\u003e to receive responses and an optional \u003ccode\u003eApiCallContext\u003c/code\u003e for providing call-specific context.\u003c/p\u003e\n"],["\u003cp\u003eThere is also a method \u003ccode\u003ewithDefaultCallContext\u003c/code\u003e which can be used to set a default \u003ccode\u003eApiCallContext\u003c/code\u003e that will be applied when no context is supplied during the individual client streaming calls.\u003c/p\u003e\n"]]],[],null,["# Class ClientStreamingCallable<RequestT,ResponseT> (2.69.0)\n\nVersion latestkeyboard_arrow_down\n\n- [2.69.0 (latest)](/java/docs/reference/gax/latest/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.68.2](/java/docs/reference/gax/2.68.2/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.67.0](/java/docs/reference/gax/2.67.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.66.0](/java/docs/reference/gax/2.66.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.65.0](/java/docs/reference/gax/2.65.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.63.1](/java/docs/reference/gax/2.63.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.62.0](/java/docs/reference/gax/2.62.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.61.0](/java/docs/reference/gax/2.61.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.60.0](/java/docs/reference/gax/2.60.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.59.1](/java/docs/reference/gax/2.59.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.58.0](/java/docs/reference/gax/2.58.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.57.0](/java/docs/reference/gax/2.57.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.55.0](/java/docs/reference/gax/2.55.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.54.1](/java/docs/reference/gax/2.54.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.53.0](/java/docs/reference/gax/2.53.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.52.0](/java/docs/reference/gax/2.52.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.51.0](/java/docs/reference/gax/2.51.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.50.0](/java/docs/reference/gax/2.50.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.49.0](/java/docs/reference/gax/2.49.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.48.1](/java/docs/reference/gax/2.48.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.47.0](/java/docs/reference/gax/2.47.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.46.1](/java/docs/reference/gax/2.46.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.45.0](/java/docs/reference/gax/2.45.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.43.0](/java/docs/reference/gax/2.43.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.42.0](/java/docs/reference/gax/2.42.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.41.0](/java/docs/reference/gax/2.41.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.39.0](/java/docs/reference/gax/2.39.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.38.0](/java/docs/reference/gax/2.38.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.37.0](/java/docs/reference/gax/2.37.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.36.0](/java/docs/reference/gax/2.36.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.35.0](/java/docs/reference/gax/2.35.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.34.1](/java/docs/reference/gax/2.34.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.33.0](/java/docs/reference/gax/2.33.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.32.1](/java/docs/reference/gax/2.32.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.31.1](/java/docs/reference/gax/2.31.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.30.1](/java/docs/reference/gax/2.30.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.24.0](/java/docs/reference/gax/2.24.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.23.3](/java/docs/reference/gax/2.23.3/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.22.0](/java/docs/reference/gax/2.22.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.21.0](/java/docs/reference/gax/2.21.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.20.1](/java/docs/reference/gax/2.20.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.19.6](/java/docs/reference/gax/2.19.6/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.18.7](/java/docs/reference/gax/2.18.7/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.17.0](/java/docs/reference/gax/2.17.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.16.0](/java/docs/reference/gax/2.16.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.15.0](/java/docs/reference/gax/2.15.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.14.0](/java/docs/reference/gax/2.14.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.13.0](/java/docs/reference/gax/2.13.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.12.2](/java/docs/reference/gax/2.12.2/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.11.0](/java/docs/reference/gax/2.11.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.10.0](/java/docs/reference/gax/2.10.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.9.0](/java/docs/reference/gax/2.9.0/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.8.1](/java/docs/reference/gax/2.8.1/com.google.api.gax.rpc.ClientStreamingCallable)\n- [2.7.1](/java/docs/reference/gax/2.7.1/com.google.api.gax.rpc.ClientStreamingCallable) \n\n public abstract class ClientStreamingCallable\u003cRequestT,ResponseT\u003e\n\nA ClientStreamingCallable is an immutable object which is capable of making RPC calls to client\nstreaming API methods. Not all transports support streaming.\n\nIt is considered advanced usage for a user to create a ClientStreamingCallable themselves.\nThis class is intended to be created by a generated client class, and configured by instances of\nStreamingCallSettings.Builder which are exposed through the client settings class. \n\nInheritance\n-----------\n\n[java.lang.Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \\\u003e ClientStreamingCallable\\\u003cRequestT,ResponseT\\\u003e \n\nInherited Members\n-----------------\n\n[Object.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--) \n[Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-) \n[Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) \n[Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) \n[Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--) \n[Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) \n[Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) \n[Object.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) \n[Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) \n[Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) \n[Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)\n\nConstructors\n------------\n\n### ClientStreamingCallable()\n\n protected ClientStreamingCallable()\n\nMethods\n-------\n\n### clientStreamingCall(ApiStreamObserver\\\u003cResponseT\\\u003e responseObserver)\n\n public ApiStreamObserver\u003cRequestT\u003e clientStreamingCall(ApiStreamObserver\u003cResponseT\u003e responseObserver)\n\nConduct a client streaming call\n\n### clientStreamingCall(ApiStreamObserver\\\u003cResponseT\\\u003e responseObserver, ApiCallContext context)\n\n public abstract ApiStreamObserver\u003cRequestT\u003e clientStreamingCall(ApiStreamObserver\u003cResponseT\u003e responseObserver, ApiCallContext context)\n\nConduct a client streaming call with the given [ApiCallContext](/java/docs/reference/gax/latest/com.google.api.gax.rpc.ApiCallContext)\n\n### withDefaultCallContext(ApiCallContext defaultCallContext)\n\n public ClientStreamingCallable\u003cRequestT,ResponseT\u003e withDefaultCallContext(ApiCallContext defaultCallContext)\n\nReturns a new `ClientStreamingCallable` with an [ApiCallContext](/java/docs/reference/gax/latest/com.google.api.gax.rpc.ApiCallContext) that is used as a\ndefault when none is supplied in individual calls."]]
