Method toByteArray

guava/src/com/google/common/io/ByteStreams.java:240–243

Reads all bytes from an input stream into a byte array. Does not close the stream. <p><b>Java 9+ users:</b> use {@code in#readAllBytes()} instead. @param in the input stream to read from @return a byte array containing all the bytes from the stream @throws IOException if an I/O error occurs

(InputStream in)

   * @throws IOException if an I/O error occurs
   */
  public static byte[] toByteArray(InputStream in) throws IOException {
    checkNotNull(in);
    return toByteArrayInternal(in, new ArrayDeque<byte[]>(TO_BYTE_ARRAY_DEQUE_SIZE), 0);
  }

  /**
   * Reads all bytes from an input stream into a byte array. The given expected size is used to