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| HDF5 Last Updated on 2026-07-28 The HDF5 Field Guide

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HDFNativeData Class Reference

## Static Public Member Functions
static synchronized byte[] | byteToByte (Byte data)
static synchronized native byte[] | byteToByte (byte data)
static synchronized native double[] | byteToDouble (byte[] data)
static synchronized double | byteToDouble (byte[] data, int start)
static synchronized native double[] | byteToDouble (int start, int len, byte[] data)
static synchronized native float[] | byteToFloat (byte[] data)
static synchronized float | byteToFloat (byte[] data, int start)
static synchronized native float[] | byteToFloat (int start, int len, byte[] data)
static synchronized native int[] | byteToInt (byte[] data)
static synchronized int | byteToInt (byte[] data, int start)
static synchronized native int[] | byteToInt (int start, int len, byte[] data)
static synchronized native long[] | byteToLong (byte[] data)
static synchronized long | byteToLong (byte[] data, int start)
static synchronized native long[] | byteToLong (int start, int len, byte[] data)
static synchronized Object | byteToNumber (byte[] barray, Object obj) throws HDF5Exception
static synchronized native short[] | byteToShort (byte[] data)
static synchronized short | byteToShort (byte[] data, int start)
static synchronized native short[] | byteToShort (int start, int len, byte[] data)
static synchronized byte[] | doubleToByte (Double data)
static synchronized native byte[] | doubleToByte (double data)
static synchronized native byte[] | doubleToByte (int start, int len, double[] data)
static synchronized byte[] | floatToByte (Float data)
static synchronized native byte[] | floatToByte (float data)
static synchronized native byte[] | floatToByte (int start, int len, float[] data)
static synchronized native byte[] | intToByte (int data)
static synchronized native byte[] | intToByte (int start, int len, int[] data)
static synchronized byte[] | intToByte (Integer data)
static synchronized native byte[] | longToByte (int start, int len, long[] data)
static synchronized byte[] | longToByte (Long data)
static synchronized native byte[] | longToByte (long data)
static synchronized native byte[] | shortToByte (int start, int len, short[] data)
static synchronized byte[] | shortToByte (Short data)
static synchronized native byte[] | shortToByte (short data)

## Member Function Documentation

## ◆ byteToByte() [1/2]

synchronized byte[] byteToByte | ( | Byte | data | ) |
| static

Convert a single Byte object into an array of one byte.

(This is an almost trivial method.)

Parameters

  data | The input Byte

Returns
  an array of bytes

## ◆ byteToByte() [2/2]

synchronized native byte[] byteToByte | ( | byte | data | ) |
| static

Convert a single byte into an array of one byte.

(This is a trivial method.)

Parameters

  data | The input byte

Returns
  an array of bytes

## ◆ byteToDouble() [1/3]

synchronized native double[] byteToDouble | ( | byte[] | data | ) |
| static

Convert an array of bytes into an array of double

Parameters

  data | The input array of bytes

Returns
  an array of double

## ◆ byteToDouble() [2/3]

synchronized double byteToDouble | ( | byte[] | data,
|  | int | start )
| static

Convert 8 bytes from an array of bytes into a single double

Parameters

  start | The position in the input array of bytes to start
  data | The input array of bytes

Returns
  The double value of the bytes.

## ◆ byteToDouble() [3/3]

synchronized native double[] byteToDouble | ( | int | start,
|  | int | len,
|  | byte[] | data )
| static

Convert a range from an array of bytes into an array of double

Parameters

  start | The position in the input array of bytes to start
  len | The number of 'double' to convert
  data | The input array of bytes

Returns
  an array of 'len' double

## ◆ byteToFloat() [1/3]

synchronized native float[] byteToFloat | ( | byte[] | data | ) |
| static

Convert an array of bytes into an array of floats

Parameters

  data | The input array of bytes

Returns
  an array of float

## ◆ byteToFloat() [2/3]

synchronized float byteToFloat | ( | byte[] | data,
|  | int | start )
| static

Convert 4 bytes from an array of bytes into a single float

Parameters

  start | The position in the input array of bytes to start
  data | The input array of bytes

Returns
  The float value of the bytes.

## ◆ byteToFloat() [3/3]

synchronized native float[] byteToFloat | ( | int | start,
|  | int | len,
|  | byte[] | data )
| static

Convert a range from an array of bytes into an array of float

Parameters

  start | The position in the input array of bytes to start
  len | The number of 'float' to convert
  data | The input array of bytes

Returns
  an array of 'len' float

## ◆ byteToInt() [1/3]

synchronized native int[] byteToInt | ( | byte[] | data | ) |
| static

Convert an array of bytes into an array of ints

Parameters

  data | The input array of bytes

Returns
  an array of int

## ◆ byteToInt() [2/3]

synchronized int byteToInt | ( | byte[] | data,
|  | int | start )
| static

Convert 4 bytes from an array of bytes into a single int

Parameters

  start | The position in the input array of bytes to start
  data | The input array of bytes

Returns
  The integer value of the bytes.

## ◆ byteToInt() [3/3]

synchronized native int[] byteToInt | ( | int | start,
|  | int | len,
|  | byte[] | data )
| static

Convert a range from an array of bytes into an array of int

Parameters

  start | The position in the input array of bytes to start
  len | The number of 'int' to convert
  data | The input array of bytes

Returns
  an array of 'len' int

## ◆ byteToLong() [1/3]

synchronized native long[] byteToLong | ( | byte[] | data | ) |
| static

Convert an array of bytes into an array of long

Parameters

  data | The input array of bytes

Returns
  an array of long

## ◆ byteToLong() [2/3]

synchronized long byteToLong | ( | byte[] | data,
|  | int | start )
| static

Convert 8 bytes from an array of bytes into a single long

Parameters

  start | The position in the input array of bytes to start
  data | The input array of bytes

Returns
  The long value of the bytes.

## ◆ byteToLong() [3/3]

synchronized native long[] byteToLong | ( | int | start,
|  | int | len,
|  | byte[] | data )
| static

Convert a range from an array of bytes into an array of long

Parameters

  start | The position in the input array of bytes to start
  len | The number of 'long' to convert
  data | The input array of bytes

Returns
  an array of 'len' long

## ◆ byteToNumber()

synchronized Object byteToNumber | ( | byte[] | barray,
|  | Object | obj ) throws HDF5Exception
| static

Create a Number object from an array of bytes.

Parameters

  barray | The bytes to be converted
  obj | Input object of the desired output class. Must be a sub-class of Number.

Returns
  A Object of the type of obj.

Exceptions

  HDF5Exception | Error unsupported type.

## ◆ byteToShort() [1/3]

synchronized native short[] byteToShort | ( | byte[] | data | ) |
| static

Convert an array of bytes into an array of shorts

Parameters

  data | The input array of bytes

Returns
  an array of short

## ◆ byteToShort() [2/3]

synchronized short byteToShort | ( | byte[] | data,
|  | int | start )
| static

Convert 2 bytes from an array of bytes into a single short

Parameters

  start | The position in the input array of bytes to start
  data | The input array of bytes

Returns
  The short value of the bytes.

## ◆ byteToShort() [3/3]

synchronized native short[] byteToShort | ( | int | start,
|  | int | len,
|  | byte[] | data )
| static

Convert a range from an array of bytes into an array of short

Parameters

  start | The position in the input array of bytes to start
  len | The number of 'short' to convert
  data | The input array of bytes

Returns
  an array of 'len' short

## ◆ doubleToByte() [1/3]

synchronized byte[] doubleToByte | ( | Double | data | ) |
| static

Convert a single Double object into an array of 8 bytes.

Parameters

  data | The input Double

Returns
  an array of bytes

## ◆ doubleToByte() [2/3]

synchronized native byte[] doubleToByte | ( | double | data | ) |
| static

Convert a single double into an array of 8 bytes.

Parameters

  data | The input double

Returns
  an array of bytes

## ◆ doubleToByte() [3/3]

synchronized native byte[] doubleToByte | ( | int | start,
|  | int | len,
|  | double[] | data )
| static

Convert a range from an array of double into an array of bytes.

Parameters

  start | The position in the input array of double to start
  len | The number of 'double' to convert
  data | The input array of double

Returns
  an array of bytes

## ◆ floatToByte() [1/3]

synchronized byte[] floatToByte | ( | Float | data | ) |
| static

Convert a single Float object into an array of 4 bytes.

Parameters

  data | The input Float

Returns
  an array of bytes

## ◆ floatToByte() [2/3]

synchronized native byte[] floatToByte | ( | float | data | ) |
| static

Convert a single float into an array of 4 bytes.

Parameters

  data | The input float

Returns
  an array of bytes

## ◆ floatToByte() [3/3]

synchronized native byte[] floatToByte | ( | int | start,
|  | int | len,
|  | float[] | data )
| static

Convert a range from an array of float into an array of bytes.

Parameters

  start | The position in the input array of int to start
  len | The number of 'float' to convert
  data | The input array of float

Returns
  an array of bytes

## ◆ intToByte() [1/3]

synchronized native byte[] intToByte | ( | int | data | ) |
| static

Convert a single int into an array of 4 bytes.

Parameters

  data | The input int

Returns
  an array of bytes

## ◆ intToByte() [2/3]

synchronized native byte[] intToByte | ( | int | start,
|  | int | len,
|  | int[] | data )
| static

Convert a range from an array of int into an array of bytes.

Parameters

  start | The position in the input array of int to start
  len | The number of 'int' to convert
  data | The input array of int

Returns
  an array of bytes

## ◆ intToByte() [3/3]

synchronized byte[] intToByte | ( | Integer | data | ) |
| static

Convert a single Integer object into an array of 4 bytes.

Parameters

  data | The input Integer

Returns
  an array of bytes

## ◆ longToByte() [1/3]

synchronized native byte[] longToByte | ( | int | start,
|  | int | len,
|  | long[] | data )
| static

Convert a range from an array of long into an array of bytes.

Parameters

  start | The position in the input array of int to start
  len | The number of 'long' to convert
  data | The input array of long

Returns
  an array of bytes

## ◆ longToByte() [2/3]

synchronized byte[] longToByte | ( | Long | data | ) |
| static

Convert a single Long object into an array of 8 bytes.

Parameters

  data | The input Long

Returns
  an array of bytes

## ◆ longToByte() [3/3]

synchronized native byte[] longToByte | ( | long | data | ) |
| static

Convert a single long into an array of 8 bytes.

Parameters

  data | The input long

Returns
  an array of bytes

## ◆ shortToByte() [1/3]

synchronized native byte[] shortToByte | ( | int | start,
|  | int | len,
|  | short[] | data )
| static

Convert a range from an array of short into an array of bytes.

Parameters

  start | The position in the input array of int to start
  len | The number of 'short' to convert
  data | The input array of short

Returns
  an array of bytes

## ◆ shortToByte() [2/3]

synchronized byte[] shortToByte | ( | Short | data | ) |
| static

Convert a single Short object into an array of 2 bytes.

Parameters

  data | The input Short

Returns
  an array of bytes

## ◆ shortToByte() [3/3]

synchronized native byte[] shortToByte | ( | short | data | ) |
| static

Convert a single short into an array of 2 bytes.

Parameters

  data | The input short

Returns
  an array of bytes

The documentation for this class was generated from the following file:

- java/src-jni/hdf/hdf5lib/HDFNativeData.java