public static byte[] getFourBytes(int i) 
{
    byte[] bytes = new byte[4];
    int i1 = i & 0xffff;
    int i2 = (i & 0xffff0000)  > > 16;
    getTwoBytes(i1, bytes, 0);
    getTwoBytes(i2, bytes, 2);
    return bytes;
}

Gets a four byte array from an integer

 public static  void getFourBytes(int i,
    byte[] target,
    int pos) 
{
    byte[] bytes = getFourBytes(i);
    target[pos]     = bytes[0];
    target[pos + 1] = bytes[1];
    target[pos + 2] = bytes[2];
    target[pos + 3] = bytes[3];
}

Converts an integer into four bytes, and places it in the array at the specified position

 public static int getInt(byte b1,
    byte b2) 
{
    int i1 = b1 & 0xff;
    int i2 = b2 & 0xff;
    int val = i2 < <  8 | i1;
    return val;
}

Gets an int from two bytes

 public static int getInt(byte b1,
    byte b2,
    byte b3,
    byte b4) 
{
    int i1 = getInt(b1, b2);
    int i2 = getInt(b3, b4);
    int val = i2 < <  16 | i1;
    return val;
}

Gets an int from four bytes, doing all the necessary swapping

 public static short getShort(byte b1,
    byte b2) 
{
    short i1  = (short) (b1 & 0xff);
    short i2  = (short) (b2 & 0xff);
    short val = (short) (i2 < <  8 | i1);
    return val;
}

Gets an short from two bytes

 public static byte[] getTwoBytes(int i) 
{
    byte[] bytes = new byte[2];
    bytes[0] = (byte) (i & 0xff);
    bytes[1] = (byte) ((i & 0xff00)  > > 8);
    return bytes;
}

Gets a two byte array from an integer

 public static  void getTwoBytes(int i,
    byte[] target,
    int pos) 
{
    target[pos] = (byte) (i & 0xff);
    target[pos + 1] = (byte) ((i & 0xff00)  > > 8);
}

Converts an integer into two bytes, and places it in the array at the specified position