public class DataUtil {    public static void main(String[] args) {        int a = 8;        int value = charToInt(byteToChar(intToByte(a)));        int value2 = byteToInt(charToByte(intTochar(a)));        System.out.println(value);        System.out.println(value2);    }    public static byte[] intToByte(int value){        byte[] b = new byte[4];        b[0] = (byte) (value & 0xff);        b[1] = (byte) ((value >> 8) & 0xff);        b[2] = (byte) ((value >> 16) & 0xff);        b[3] = (byte) ((value >> 24) & 0xff);        return b;    }    public static int byteToInt(byte[] bytes){        return  (bytes[0] & 0xff) | ((bytes[1] & 0xff) << 8)                | ((bytes[2] & 0xff) << 16) | ((bytes[3] & 0xff) << 24);    }    public static char[] intTochar(int value){        char[] c = new char[2];        c[0] = (char) (value & 0xffff);        c[1] = (char) ((value >> 16) & 0xffff);        return c;    }    public static int charToInt(char[] chars){        return (chars[0] & 0xffff) | ((chars[1] & 0xffff) << 16);    }    public static char[] byteToChar(byte[] bytes){        char[] v = new char[2];        v[0] = (char) ((bytes[0] & 0xffff) | ((bytes[1] & 0xffff) << 8));        v[1] = (char) ((bytes[2] & 0xffff) | ((bytes[3] & 0xffff) << 8));        return v;    }    public static byte[] charToByte(char[] chars){        byte[] bytes = new byte[4];        bytes[0] = (byte) (chars[0] & 0xff);        bytes[1] = (byte) ((chars[0] >> 8) & 0xff);        bytes[2] = (byte) (chars[1] & 0xff);        bytes[3] = (byte) ((chars[1] >> 8) & 0xff);        return bytes;    }    public static byte[] objectToBytes(Object object) throws IOException{        try(ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();            ObjectOutputStream outputStream = new ObjectOutputStream(arrayOutputStream)){            outputStream.writeObject(object);            outputStream.flush();            return arrayOutputStream.toByteArray();        }    }    public static Object bytesToObject(byte[] bytes) throws IOException,ClassNotFoundException{        try (ByteArrayInputStream arrayInputStream = new ByteArrayInputStream(bytes);            ObjectInputStream objectInputStream = new ObjectInputStream(arrayInputStream)){            return objectInputStream.readObject();        }    }}