Examples of java.io.DataInputStream.mark()

java.io.DataInputStream.mark()
Marks the current position in this input stream. A subsequent call to the reset method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.
The readlimit argument tells this input stream to allow that many bytes to be read before the mark position gets invalidated.
This method simply performs in.mark(readlimit). @param readlimit the maximum limit of bytes that can be read beforethe mark position becomes invalid.

        out.close();
        DataInputStream in = new DataInputStream(tmp.getInputStream());
        byte[] data1 = new byte[sourceData1.length];
        byte[] data2 = new byte[sourceData2.length];
        in.readFully(data1);
        in.mark(sourceData2.length);
        in.readFully(data2);
        in.reset();
        in.readFully(data2);
        assertTrue(Arrays.equals(sourceData1, data1));
        assertTrue(Arrays.equals(sourceData2, data2));

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      DataInputStream dataIn = new DataInputStream(new ByteBufferInputStream(buffer));


      boolean subPageFormat;
      byte[] header;


      dataIn.mark(0);
      int b0 = dataIn.readUnsignedByte();
      dataIn.reset();


      subPageFormat = ((b0 >>> 6) & 0x01) == 1;

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    long recentOpcodeOffsets[] = new long[4];


    DataInputStream in = new DataInputStream(tracker);
    try {
      // Read log file version. Could be missing. 
      in.mark(4);
      // If edits log is greater than 2G, available method will return negative
      // numbers, so we avoid having to call available
      boolean available = true;
      try {
        logVersion = in.readByte();

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  @Override
  public void readFilter(InputStream input, OutputStream output, String charset, HashMap<String, String> otherParams,
      FilterCallback cb) throws DataFilterException, IOException {
    DataInputStream dis = new DataInputStream(input);
    dis.mark(54);
    byte[] StartWord = new byte[2];
    dis.readFully(StartWord);
    if((!Arrays.equals(StartWord, bmpHeaderwindows)) && (!Arrays.equals(StartWord, bmpHeaderos2bArray)) && (!Arrays.equals(StartWord, bmpHeaderos2cIcon)) && (!Arrays.equals(StartWord, bmpHeaderos2cPointer)) && (!Arrays.equals(StartWord, bmpHeaderos2Icon)) && (!Arrays.equals(StartWord, bmpHeaderos2Pointer))) {  //Checking the first word
      throwHeaderError(l10n("InvalidStartWordT"), l10n("InvalidStartWordD"));
    }

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    if (edits != null) {
      DataInputStream in = new DataInputStream(
                                               new BufferedInputStream(
                                                                       new FileInputStream(edits)));
      // Read log file version. Could be missing. 
      in.mark(4);
      // If edits log is greater than 2G, available method will return negative
      // numbers, so we avoid having to call available
      boolean available = true;
      try {
        logVersion = in.readByte();

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    if (edits != null) {
      DataInputStream in = new DataInputStream(
                                               new BufferedInputStream(
                                                                       new FileInputStream(edits)));
      // Read log file version. Could be missing. 
      in.mark(4);
      // If edits log is greater than 2G, available method will return negative
      // numbers, so we avoid having to call available
      boolean available = true;
      try {
        logVersion = in.readByte();

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    if (edits != null) {
      DataInputStream in = new DataInputStream(
                                               new BufferedInputStream(
                                                                       new FileInputStream(edits)));
      // Read log file version. Could be missing. 
      in.mark(4);
      // If edits log is greater than 2G, available method will return negative
      // numbers, so we avoid having to call available
      boolean available = true;
      try {
        logVersion = in.readByte();

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    long startTime = FSNamesystem.now();


    DataInputStream in = new DataInputStream(new BufferedInputStream(edits));
    try {
      // Read log file version. Could be missing. 
      in.mark(4);
      // If edits log is greater than 2G, available method will return negative
      // numbers, so we avoid having to call available
      boolean available = true;
      try {
        logVersion = in.readByte();

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    long startTime = FSNamesystem.now();


    DataInputStream in = new DataInputStream(new BufferedInputStream(edits));
    try {
      // Read log file version. Could be missing. 
      in.mark(4);
      // If edits log is greater than 2G, available method will return negative
      // numbers, so we avoid having to call available
      boolean available = true;
      try {
        logVersion = in.readByte();

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    if (edits != null) {
      DataInputStream in = new DataInputStream(
                                               new BufferedInputStream(
                                                                       new FileInputStream(edits)));
      // Read log file version. Could be missing. 
      in.mark(4);
      // If edits log is greater than 2G, available method will return negative
      // numbers, so we avoid having to call available
      boolean available = true;
      try {
        logVersion = in.readByte();

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