Examples of java.io.InputStream.mark()

java.io.InputStream.mark()
Set a Mark position in this InputStream. The parameter readLimit indicates how many bytes can be read before a mark is invalidated. Sending reset() will reposition the Stream back to the marked position provided readLimit has not been surpassed.
This default implementation does nothing and concrete subclasses must provide their own implementations. @param readlimit the number of bytes to be able to read before invalidating the mark.

        }
    InputStream in = new BufferedInputStream(
        new ByteArrayInputStream(bytes), 12);
    try {
      in.skip(6);
      in.mark(14);
      in.read(new byte[14], 0, 14);
      in.reset();
      assertTrue("Wrong bytes", in.read() == 6 && in.read() == 7);
    } catch (IOException e) {
      fail("Exception during mark test 2");

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    }


    in = new BufferedInputStream(new ByteArrayInputStream(bytes), 12);
    try {
      in.skip(6);
      in.mark(8);
      in.skip(7);
      in.reset();
      assertTrue("Wrong bytes 2", in.read() == 6 && in.read() == 7);
    } catch (IOException e) {
      fail("Exception during mark test 3");

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    private static String getMessage(ClientResponse clientResponse) {
        String message;
        clientResponse.bufferEntity();
        InputStream in = clientResponse.getEntityInputStream();
        try {
            in.mark(MB);
            try {
                message = clientResponse.getEntity(APIResult.class).getMessage();
            } catch (Throwable e) {
                in.reset();
                message = clientResponse.getEntity(InstancesResult.class).getMessage();

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                    // we have to copy the classfile, because if it won't be
                    // enhanced, the OutputStream is empty and we have to
                    // re-read the InputStream, which is impossible with a
                    // ZipInputStream (no mark/reset)
                    in = openZipEntry(zip_in);
                    in.mark(Integer.MAX_VALUE);
                    final ByteArrayOutputStream tmp
                        = new ByteArrayOutputStream();
                    if (enhancer.enhanceClassFile(in, tmp)) {
                        enhanced = true;
                        final byte[] bytes = tmp.toByteArray();

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            InputStream in = httpRequest.getInputStream();
            if (in != null) {
                // use a buffered input stream to find out whether there actually
                // is a request body
                InputStream bin = new BufferedInputStream(in);
                bin.mark(1);
                boolean isEmpty = -1 == bin.read();
                bin.reset();
                if (!isEmpty) {
                    DocumentBuilder docBuilder = DomUtil.BUILDER_FACTORY.newDocumentBuilder();
                    requestDocument = docBuilder.parse(bin);

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        try {
            // test whether mark and reset works
            assertTrue(in instanceof DbInputStream);
            in = new BufferedInputStream(in);
            assertTrue(in.markSupported());
            in.mark(data.length);
            while (-1 != in.read()) {
                // loop
            }
            assertTrue(in.markSupported());
            try {

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  public void testMarkAndReset() throws IOException
  {
    InputStream data = new ByteArrayInputStream(DATA);
    InputStream in = new LimitInputStream(data, 10);
    assertTrue(in.available() > 0);
    in.mark(100);
    in.read(new byte[20]);
    in.reset();
    assertTrue(in.available() > 0);
  }

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            try {
                while (true) {
                    synchronized (is) {
                        // Mark the stream position so that other threads can
                        // reread the strea
                        is.mark(buf.length);
                        // Read one more byte than has already been read to
                        // force the stream to wait for input
                        bytesAvailable = is.available();
                        if (bytesAvailable < buf.length) {
                            bytesRead = is.read(buf, 0, bytesAvailable + 1);

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        } catch (RuntimeException e) {
            LOGGER.error(e.getMessage());
            throw e;
        }
        try {
            is.mark(256 * 1024);
            JarInputStream jar = new JarInputStream(is);
            Manifest m = jar.getManifest();
            if(m == null) {
                throw new BundleException("Manifest not present in the first entry of the zip " + bundleLocation);
            }

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        throws IOException, FalconException {


        EntityParser<?> entityParser = EntityParserFactory.getParser(entityType);
        InputStream xmlStream = request.getInputStream();
        if (xmlStream.markSupported()) {
            xmlStream.mark(XML_DEBUG_LEN); // mark up to debug len
        }
        try {
            return entityParser.parse(xmlStream);
        } catch (FalconException e) {
            if (LOG.isDebugEnabled() && xmlStream.markSupported()) {

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