I am using preon lib to parse binary data it contain short, int data

The structure as follows

@BoundNumber(size="32", byteOrder=ByteOrder.BigEndian) public int time;//
@BoundString(size="2") public String alphaChar;// 2 byte array
@BoundNumber(size="16", byteOrder=ByteOrder.BigEndian) public int code1;//short

@BoundNumber(size="16", byteOrder=ByteOrder.BigEndian) public int code2;//short
@BoundNumber(size="16", byteOrder=ByteOrder.BigEndian) public int code3;//short
@BoundString(size="8") public String firstName;// 8 byte array
@BoundString(size="8") public String middleName;// 8 byte array
@BoundString(size="8") public String lastName;// 8 byte array

@BoundNumber(size="16", byteOrder=ByteOrder.BigEndian) public int code4;//short

I am getting correct values for code1, code2, code3 but for code4 it not giving me correct value. It always gives me 0(Zero); When I checked with position of byte array; it shows me correct value.

Is there any kind padding require?