edit java class file JAD

Question

i need to change the access modifier of one constructor in a class file... how do i do it with jad..

thanks all...

raj...

JAD is a decompiler, not a classfile modification tool.

skaffman
– skaffman

2010-06-09 11:48:58 +00:00
Commented Jun 9, 2010 at 11:48 — skaffman
– skaffman, Commented Jun 9, 2010 at 11:48

Aaron Digulla · Accepted Answer · 2010-06-09 11:53:03Z

4

Solution with JAD:

Decompile the class with JAD
Edit it with your favorite editor
Save the file
Compile it with javac

More simple solution:

Class<?> c = Class.forName("fully.qualified.name.of.your.Class");
ctor = c.getConstructor(...argument types here...);
ctor.setAccessible(true);

(Your IDE will suggest the type for ctor ... otherwise change it)

Now you can invoke the constructor at runtime.

If you really need to modify the byte code, have a look at the ASM library.

answered Jun 9, 2010 at 11:53

Aaron Digulla

330k111 gold badges626 silver badges840 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Raj Over a year ago

Aaron, it would be so helpul of you, if yu can provide a snippet where i can make the private constructor taking no arguments accessible... i am nt able to get the proper paramater list thanks...

Aaron Digulla Over a year ago

This article should help to get you started with reflection: java.sun.com/developer/technicalArticles/ALT/Reflection

Collectives™ on Stack Overflow

edit java class file JAD

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related