Examples of java.io.DataInputStream.readDouble()

java.io.DataInputStream.readDouble()
See the general contract of the readDouble method of DataInput.
Bytes for this operation are read from the contained input stream. @return the next eight bytes of this input stream, interpreted as adouble. @exception EOFException if this input stream reaches the end beforereading eight bytes. @exception IOException the stream has been closed and the containedinput stream does not support reading after close, or another I/O error occurs. @see java.io.DataInputStream#readLong() @see java.lang.Double#longBitsToDouble(long)

  public static double[] readDouble(String file, int first, int skipBytes, int length) throws IOException{
    double[] data = new double[length];
    DataInputStream in = new DataInputStream(new FileInputStream(file));
    //find the first double to read in
    in.skipBytes(first);
    data[0] = in.readDouble();
    for(int i=1; i<length; ++i){
      in.skipBytes(skipBytes);
      data[i] = in.readDouble();
    }
    in.close();

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    //find the first double to read in
    in.skipBytes(first);
    data[0] = in.readDouble();
    for(int i=1; i<length; ++i){
      in.skipBytes(skipBytes);
      data[i] = in.readDouble();
    }
    in.close();
    return data;
  }

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   */
  public static double[] readDouble(String file) throws IOException{
    ArrayList<Double> data = new ArrayList<Double>(1000);
    DataInputStream in = new DataInputStream(new FileInputStream(file));
    while(in.available()>0){
      data.add(in.readDouble());
    }
    in.close();
    double[] doubleData = new double[data.size()];
    for(int i=0; i<doubleData.length; ++i){
      doubleData[i] = data.get(i);

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  private static double[][] readDoubleByRow(String file, int first, int skipBytes,int rowNumber, int columnNumber) throws IOException{
    DataInputStream in = new DataInputStream(new FileInputStream(file));
    double[][] data = new double[rowNumber][columnNumber];
    in.skipBytes(first);
    data[0][0] = in.readDouble();
    for(int colIndex=1; colIndex<columnNumber; ++colIndex){
      in.skipBytes(skipBytes);
      data[0][colIndex] = in.readDouble();
    }
    for(int rowIndex=1; rowIndex<rowNumber; ++rowIndex){

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    double[][] data = new double[rowNumber][columnNumber];
    in.skipBytes(first);
    data[0][0] = in.readDouble();
    for(int colIndex=1; colIndex<columnNumber; ++colIndex){
      in.skipBytes(skipBytes);
      data[0][colIndex] = in.readDouble();
    }
    for(int rowIndex=1; rowIndex<rowNumber; ++rowIndex){
      for(int colIndex=0; colIndex<columnNumber; ++colIndex){
        in.skipBytes(skipBytes);
        data[rowIndex][colIndex] = in.readDouble();

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      data[0][colIndex] = in.readDouble();
    }
    for(int rowIndex=1; rowIndex<rowNumber; ++rowIndex){
      for(int colIndex=0; colIndex<columnNumber; ++colIndex){
        in.skipBytes(skipBytes);
        data[rowIndex][colIndex] = in.readDouble();
      }
    }
    in.close();
    return data;
  }

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  private static double[][] readDoubleByColumn(String file, int first, int skipBytes,int rowNumber, int columnNumber) throws IOException{
    DataInputStream in = new DataInputStream(new FileInputStream(file));
    double[][] data = new double[rowNumber][columnNumber];
    in.skipBytes(first);
    data[0][0] = in.readDouble();
    for(int rowIndex=1; rowIndex<rowNumber; ++rowIndex){
      in.skipBytes(skipBytes);
      data[rowIndex][0] = in.readDouble();
    }
    for(int colIndex=1; colIndex<columnNumber; ++colIndex){

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    double[][] data = new double[rowNumber][columnNumber];
    in.skipBytes(first);
    data[0][0] = in.readDouble();
    for(int rowIndex=1; rowIndex<rowNumber; ++rowIndex){
      in.skipBytes(skipBytes);
      data[rowIndex][0] = in.readDouble();
    }
    for(int colIndex=1; colIndex<columnNumber; ++colIndex){
      for(int rowIndex=0; rowIndex<rowNumber; ++rowIndex){
        in.skipBytes(skipBytes);
        data[rowIndex][colIndex] = in.readDouble();

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      data[rowIndex][0] = in.readDouble();
    }
    for(int colIndex=1; colIndex<columnNumber; ++colIndex){
      for(int rowIndex=0; rowIndex<rowNumber; ++rowIndex){
        in.skipBytes(skipBytes);
        data[rowIndex][colIndex] = in.readDouble();
      }
    }
    in.close();
    return data;
  }

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        DataInputStream input = null;
        try {
          String name = removeSuffix(child);
          input = new DataInputStream(new ByteArrayInputStream(dataInBytes));
          if ("d".equals(dataType)) {
            double dv = input.readDouble();
            LOG.info("metrics " + name + " value:" + dv);
            record.add(new Metric<Double>(name, dv));
          } else if ("f".equals(dataType)) {
            float fv = input.readFloat();
            LOG.info("metrics " + name + " value:" + fv);

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