Three ways to Display Java Magic code

First method to disaply cafebabe

     give any class you will get the corresponding magic code

import java.io.*;
import java.util.*;
class Converter
{
public static void main(String ...args)
{
FileInputStream fis=null;
Scanner sc=null;
PrintWriter pw=null;
try
{
sc=new Scanner(System.in);
System.out.println("enter class file namefollowed by .class");
String s=sc.next();
fis=new FileInputStream(s);
pw=new PrintWriter(new FileOutputStream("ram.txt"));
int k;
while((k=fis.read())!=-1)
{
if(k==10)
pw.println();
pw.write(Integer.toHexString(k));
}
}
catch(Exception e)
{
}
pw.flush();
}
}

Second Method:

Using debug command in windows

debug command is there in c:\windows\system32

check once wheather you system having it or not

if it is not there then download it

debug has two basic options

d-display

q-quit

when ever we enter command an - symbol come which indicates that debug command is there in your system

for

unix system

use

grep command

ex: grep -d test.class 

Third way

edit plus 3.0 have feature of displaying the code in hex decimal form

so

first open the class file with edit plus 3.0

and then select

hexa decimal view