import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
public class MyOD {
    public static String format(byte []bt){

        int line=0 ;

        StringBuilder buf=new StringBuilder() ;

        for(byte d:bt){

            if(line%16==0)

                buf.append(String.format("%05x: ", line)) ;

            buf.append(String.format("%02x  ", d)) ;

            line++ ;

            if(line%16==0)

                buf.append("\n");

        }

       // buf.append("\n") ;

        return buf.toString();

    }

    public static byte[] readFile(String file) throws IOException{

        InputStream is=new FileInputStream(file) ;

        int length=is.available() ;

        byte bt[]=new byte[length] ;

        is.read(bt) ;

        return bt;

    }

    public static  void main(String[]agrs) throws IOException{

        byte []bt=MyOD.readFile("C:\\Users\\23321\\20165305zhenlong\\java\\123.txt");

        //String hexData=MyOD.format(bt) ;

        System.out.println(MyOD.format(bt));

    }

}