class file reading itself

[oll3i]

How do i make a .class file read itself ? i need to display its code from .class file (not .java file)

when i try ti simply read the file compiler says it can not find the file or that it can not find the given path
thank You

[oll3i]

okey i had to provide the full path ... but what if i don't want to give the full path because it will be dependent on the path on my system

[JosAH]

If that class is in your classpath you can use the Class.getResourseAsStream() method.

kind regards,

Jos

[oll3i]

hmm how do i get the length of the InputStream?

[JosAH]

@oll3i
What do you need it for?

kind regards,

Jos

[oll3i]

i need to load it into bytes array

and this.getClass().getClassLoader().getResourceAsStre am("nameOfTheFile.class");
throws NullPointerException ?

[oll3i]

i added py package name in the path "\\pd15\\nameodtheclass.class"
and now i get
java.io.IOException: Could not completely read file "

[JosAH]

@oll3i
Can you show us some code? It is quite easy to read everything in a byte array (write the bytes to a ByteArrayOutputStream). Are you trying to read too many bytes?

kind regards,

Jos

[oll3i]

there were 1778 bytes when i used ->InputStream is = new FileInputStream(file);

when i use InputStream is = this.getClass().getClassLoader().getResourceAsStre am("\\pd15\\nameOfTheClass.class"); it has less bytes seems like it

// Ensure all the bytes have been read in
        if (offset < bytes.length) {
            throw new IOException("Could not completely read file ");
        }
 
 

[JosAH]

@oll3i
You either have to show a bit more of your code or simply use that output stream I mentioned in my previous reply. Those streams don't lie to you.

kind regards,

Jos

[oll3i]

thank You Jos i read it :)

[JosAH]

@oll3i
So does it work now? What was the mistake?

kind regards,

Jos

[oll3i]

it works fine and converting bytes works too
the mistake i just left the length of the byte array from the previous code and the array was too big that's all

[oll3i]

now i will get to the CAFEBABE part