Computes and returns the byte content length for a streaming content by calling StreamingContent#writeTo(OutputStream) on a fake output stream that only counts bytes written.
[[["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."],[],[],null,["# Class IOUtils (2.0.0)\n\nVersion latestkeyboard_arrow_down\n\n- [2.0.0 (latest)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.IOUtils)\n- [1.47.1](/java/docs/reference/google-http-client/1.47.1/com.google.api.client.util.IOUtils)\n- [1.46.3](/java/docs/reference/google-http-client/1.46.3/com.google.api.client.util.IOUtils)\n- [1.45.3](/java/docs/reference/google-http-client/1.45.3/com.google.api.client.util.IOUtils)\n- [1.44.2](/java/docs/reference/google-http-client/1.44.2/com.google.api.client.util.IOUtils)\n- [1.43.2](/java/docs/reference/google-http-client/1.43.2/com.google.api.client.util.IOUtils)\n- [1.42.3](/java/docs/reference/google-http-client/1.42.3/com.google.api.client.util.IOUtils)\n- [1.41.8](/java/docs/reference/google-http-client/1.41.8/com.google.api.client.util.IOUtils) \n\n public class IOUtils\n\nUtilities for I/O streams. \n\nInheritance\n-----------\n\n[Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \\\u003e IOUtils \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\nStatic Methods\n--------------\n\n### \\\u003cS\\\u003edeserialize(byte\\[\\] bytes)\n\n public static S \u003cS\u003edeserialize(byte[] bytes)\n\nDeserializes the given byte array into to a newly allocated object.\n\n### \\\u003cS\\\u003edeserialize(InputStream inputStream)\n\n public static S \u003cS\u003edeserialize(InputStream inputStream)\n\nDeserializes the given input stream into to a newly allocated object, and close the input\nstream.\n\n### computeLength(StreamingContent content)\n\n public static long computeLength(StreamingContent content)\n\nComputes and returns the byte content length for a streaming content by calling [StreamingContent#writeTo(OutputStream)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.StreamingContent#com_google_api_client_util_StreamingContent_writeTo_java_io_OutputStream_) on a fake output stream that only counts bytes written.\n\n### copy(InputStream inputStream, OutputStream outputStream) (deprecated)\n\n public static void copy(InputStream inputStream, OutputStream outputStream)\n\n**Deprecated.** *use [com.google.common.io.ByteStreams#copy(InputStream, OutputStream)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.ByteStreams#com_google_api_client_util_ByteStreams_copy_)*\n\nWrites the content provided by the given source input stream into the given destination output\nstream.\n\nThe input stream is guaranteed to be closed at the end of this method.\n\nSample use:\n\nstatic void copy(InputStream inputStream, File file) throws IOException {\nFileOutputStream out = new FileOutputStream(file);\ntry {\nIOUtils.copy(inputStream, out);\n} finally {\nout.close();\n}\n}\n\n### copy(InputStream inputStream, OutputStream outputStream, boolean closeInputStream) (deprecated)\n\n public static void copy(InputStream inputStream, OutputStream outputStream, boolean closeInputStream)\n\n**Deprecated.** *use [com.google.common.io.ByteStreams#copy(InputStream, OutputStream)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.ByteStreams#com_google_api_client_util_ByteStreams_copy_)*\n\nWrites the content provided by the given source input stream into the given destination output\nstream, optionally closing the input stream.\n\nSample use:\n\nstatic void copy(InputStream inputStream, File file) throws IOException {\nFileOutputStream out = new FileOutputStream(file);\ntry {\nIOUtils.copy(inputStream, out, true);\n} finally {\nout.close();\n}\n}\n\n### isSymbolicLink(File file) (deprecated)\n\n public static boolean isSymbolicLink(File file)\n\n**Deprecated.** *use java.nio.file.Path#isSymbolicLink*\n\nReturns whether the given file is a symbolic link.\n\n### serialize(Object value)\n\n public static byte[] serialize(Object value)\n\nSerializes the given object value to a newly allocated byte array.\n\n### serialize(Object value, OutputStream outputStream)\n\n public static void serialize(Object value, OutputStream outputStream)\n\nSerializes the given object value to an output stream, and close the output stream.\n\nConstructors\n------------\n\n### IOUtils()\n\n public IOUtils()"]]
