Decompiling Java Class Files

0 votes
What program can I use to decompile a class file? Will I actually get Java code, or is it just JVM assembly code?

On Java performance questions on this site I often see responses from people who have "decompiled" the Java class file to see how the compiler optimizes certain things.
Jun 1, 2018 in Java by developer_1
 • 3,350 points • 1,259 views

1 answer to this question.

0 votes

There are a few decompilers out there... A quick search yields:

  1. Procyon: open-source (Apache 2) and actively developed
  2. Krakatau: open-source (GPLv3) and actively developed
  3. CFR: open-source (MIT) and actively developed
  4. JAD
  5. DJ Java Decompiler

And many more.

These produce Java code. Java comes with something that lets you see JVM byte code (javap).

answered Jun 1, 2018 by Rishabh
 • 3,620 points

Related Questions In Java

0 votes
0 answers

How do I "decompile" Java class files? [closed]

What program can I use to decompile ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 670 views
0 votes
2 answers

How to read the files using Java?

You can use collections. try (Stream<Path> filePathStream=Files.walk(Paths.get("/home/you/Desktop"))) { ...READ MORE

answered Jul 10, 2018 in Java by Sushmita
 • 6,920 points • 1,117 views
0 votes
1 answer

How to read text files from the Classpath in Java?

InputStream in = this.getClass().getClassLoader().getResourceAsStream("TextFile.txt"); InputStream in = this.getClass().getResourceAsStream("/TextFile.txt"); package ...READ MORE

answered May 8, 2018 in Java by Akrati
 • 3,190 points • 2,829 views
0 votes
2 answers

How can we add the local JAR files to the Maven Project in Java?

Firstly I would like to give credit ...READ MORE

answered Nov 5, 2018 in Java by Sushmita
 • 6,920 points • 11,791 views
+1 vote
1 answer

Are arrays equivalent to objects in Java ?

Yes; the Java Language Specification writes: In the Java ...READ MORE

answered May 10, 2018 in Java by Rishabh
 • 3,620 points • 1,326 views
0 votes
2 answers

Array of Objects

You can also do : A[] a = ...READ MORE

answered Aug 3, 2018 in Java by sharth
 • 3,370 points • 812 views
0 votes
2 answers

Does Java allow to create static classes?

Java has "static nested classes", but they ...READ MORE

answered Sep 5, 2018 in Java by Sushmita
 • 6,920 points • 1,147 views
0 votes
1 answer

Does python have an equivalent to Java Class.forName()?

This is found in the python standard ...READ MORE

answered Jun 1, 2018 in Java by Parth
 • 4,640 points • 1,453 views
0 votes
1 answer

Play MP3 files usng Java API

I don't believe the java AudioStream class ...READ MORE

answered May 10, 2018 in Java by Rishabh
 • 3,620 points • 9,469 views
0 votes
2 answers

Determining Class of an Object in Java

You can use: Object instance = new SomeClass(); instance.getClass().getName(); ...READ MORE

answered Nov 26, 2018 in Java by Sushmita
 • 6,920 points • 1,975 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP
"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.