java.lang.Object
- org.h2.util.Bits

```
public final class Bits
extends java.lang.Object
```
Manipulations with bytes and arrays. This class can be overridden in multi-release JAR with more efficient implementation for a newer versions of Java.

Constructor Summary

Constructors
Modifier Constructor Description

private Bits()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static int`	`compareNotNull(char[] data1, char[] data2)`	Compare the contents of two char arrays.
`static int`	`compareNotNullSigned(byte[] data1, byte[] data2)`	Compare the contents of two byte arrays.
`static int`	`compareNotNullUnsigned(byte[] data1, byte[] data2)`	Compare the contents of two byte arrays.
`static double`	`readDouble(byte[] buff, int pos)`	Reads a double value from the byte array at the given position in big-endian order.
`static double`	`readDoubleLE(byte[] buff, int pos)`	Reads a double value from the byte array at the given position in little-endian order.
`static int`	`readInt(byte[] buff, int pos)`	Reads a int value from the byte array at the given position in big-endian order.
`static int`	`readIntLE(byte[] buff, int pos)`	Reads a int value from the byte array at the given position in little-endian order.
`static long`	`readLong(byte[] buff, int pos)`	Reads a long value from the byte array at the given position in big-endian order.
`static long`	`readLongLE(byte[] buff, int pos)`	Reads a long value from the byte array at the given position in little-endian order.
`static byte[]`	`uuidToBytes(long msb, long lsb)`	Converts UUID value to byte array in big-endian order.
`static byte[]`	`uuidToBytes(java.util.UUID uuid)`	Converts UUID value to byte array in big-endian order.
`static void`	`writeDouble(byte[] buff, int pos, double x)`	Writes a double value to the byte array at the given position in big-endian order.
`static void`	`writeDoubleLE(byte[] buff, int pos, double x)`	Writes a double value to the byte array at the given position in little-endian order.
`static void`	`writeInt(byte[] buff, int pos, int x)`	Writes a int value to the byte array at the given position in big-endian order.
`static void`	`writeIntLE(byte[] buff, int pos, int x)`	Writes a int value to the byte array at the given position in little-endian order.
`static void`	`writeLong(byte[] buff, int pos, long x)`	Writes a long value to the byte array at the given position in big-endian order.
`static void`	`writeLongLE(byte[] buff, int pos, long x)`	Writes a long value to the byte array at the given position in little-endian order.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Bits
```
private Bits()
```
- Method Detail
  - compareNotNull
```
public static int compareNotNull(char[] data1,
                                 char[] data2)
```
    Compare the contents of two char arrays. If the content or length of the first array is smaller than the second array, -1 is returned. If the content or length of the second array is smaller than the first array, 1 is returned. If the contents and lengths are the same, 0 is returned.
    
    Parameters:
    
    data1 - the first char array (must not be null)
    
    data2 - the second char array (must not be null)
    
    Returns:
    
    the result of the comparison (-1, 1 or 0)
  - compareNotNullSigned
```
public static int compareNotNullSigned(byte[] data1,
                                       byte[] data2)
```
    Compare the contents of two byte arrays. If the content or length of the first array is smaller than the second array, -1 is returned. If the content or length of the second array is smaller than the first array, 1 is returned. If the contents and lengths are the same, 0 is returned.
    This method interprets bytes as signed.
    
    Parameters:
    
    data1 - the first byte array (must not be null)
    
    data2 - the second byte array (must not be null)
    
    Returns:
    
    the result of the comparison (-1, 1 or 0)
  - compareNotNullUnsigned
```
public static int compareNotNullUnsigned(byte[] data1,
                                         byte[] data2)
```
    Compare the contents of two byte arrays. If the content or length of the first array is smaller than the second array, -1 is returned. If the content or length of the second array is smaller than the first array, 1 is returned. If the contents and lengths are the same, 0 is returned.
    This method interprets bytes as unsigned.
    
    Parameters:
    
    data1 - the first byte array (must not be null)
    
    data2 - the second byte array (must not be null)
    
    Returns:
    
    the result of the comparison (-1, 1 or 0)
  - readInt
```
public static int readInt(byte[] buff,
                          int pos)
```
    Reads a int value from the byte array at the given position in big-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    Returns:
    
    the value
  - readIntLE
```
public static int readIntLE(byte[] buff,
                            int pos)
```
    Reads a int value from the byte array at the given position in little-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    Returns:
    
    the value
  - readLong
```
public static long readLong(byte[] buff,
                            int pos)
```
    Reads a long value from the byte array at the given position in big-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    Returns:
    
    the value
  - readLongLE
```
public static long readLongLE(byte[] buff,
                              int pos)
```
    Reads a long value from the byte array at the given position in little-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    Returns:
    
    the value
  - readDouble
```
public static double readDouble(byte[] buff,
                                int pos)
```
    Reads a double value from the byte array at the given position in big-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    Returns:
    
    the value
  - readDoubleLE
```
public static double readDoubleLE(byte[] buff,
                                  int pos)
```
    Reads a double value from the byte array at the given position in little-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    Returns:
    
    the value
  - uuidToBytes
```
public static byte[] uuidToBytes(long msb,
                                 long lsb)
```
    Converts UUID value to byte array in big-endian order.
    
    Parameters:
    
    msb - most significant part of UUID
    
    lsb - least significant part of UUID
    
    Returns:
    
    byte array representation
  - uuidToBytes
```
public static byte[] uuidToBytes(java.util.UUID uuid)
```
    Converts UUID value to byte array in big-endian order.
    
    Parameters:
    
    uuid - UUID value
    
    Returns:
    
    byte array representation
  - writeInt
```
public static void writeInt(byte[] buff,
                            int pos,
                            int x)
```
    Writes a int value to the byte array at the given position in big-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    x - the value to write
  - writeIntLE
```
public static void writeIntLE(byte[] buff,
                              int pos,
                              int x)
```
    Writes a int value to the byte array at the given position in little-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    x - the value to write
  - writeLong
```
public static void writeLong(byte[] buff,
                             int pos,
                             long x)
```
    Writes a long value to the byte array at the given position in big-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    x - the value to write
  - writeLongLE
```
public static void writeLongLE(byte[] buff,
                               int pos,
                               long x)
```
    Writes a long value to the byte array at the given position in little-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    x - the value to write
  - writeDouble
```
public static void writeDouble(byte[] buff,
                               int pos,
                               double x)
```
    Writes a double value to the byte array at the given position in big-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    x - the value to write
  - writeDoubleLE
```
public static void writeDoubleLE(byte[] buff,
                                 int pos,
                                 double x)
```
    Writes a double value to the byte array at the given position in little-endian order.
    
    Parameters:
    
    buff - the byte array
    
    pos - the position
    
    x - the value to write

Class Bits

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Bits

Method Detail

compareNotNull

compareNotNullSigned

compareNotNullUnsigned

readInt

readIntLE

readLong

readLongLE

readDouble

readDoubleLE

uuidToBytes

uuidToBytes

writeInt

writeIntLE

writeLong

writeLongLE

writeDouble

writeDoubleLE