The below function is to convert an int to byte. You have to pass a int value and receive the byte in a byte array

 

 

public byte[] ToByte(int a) throws IOException

{

ByteArrayOutputStream bos=new ByteArrayOutputStream();

                DataOutputStream dos=new DataOutputStream(bos);

                dos.writeInt(a);

                dos.flush();

                byte[] b1=bos.toByteArray();

                return b1;

        }

 

 The below function is to convert an byte to int. You have to pass a byte array and receive the int value

 

One int value = 4 byte as int size is 4 byte

 

public int ToInt(byte[] b) throws IOException

{

ByteArrayInputStream bis=new ByteArrayInputStream(b);

                DataInputStream in=new DataInputStream(bis);

                int a=in.readInt();

                return a;

        }