How do i view java bytecode

Programming in Java bytecode. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 11 years, 3 months ago. Active 5 years, 3 months ago. Viewed 79k times. Community Bot 1 1 1 silver badge. Abhishek Jain Abhishek Jain 6, 7 7 gold badges 23 23 silver badges 34 34 bronze badges. Check out this question for java byte code editors.

What is the underlying problem you need to solve? Abhishek What information are you seeking in the class file? I found a website which allows you to input java code and get the bytecode as the output. I had this need for creating a forked java process which could delegate to the class loader in this process without having to override it. If you implement your own classloader, you get to load the bytecode into a class.

But, if you start with a class you can't convert it to bytecode for shipping to an external process. Add a comment. Active Oldest Votes.

For example: javap -c com. Jesper Jesper k 44 44 gold badges silver badges bronze badges. By default private methods are not included. Use -p to include them as well. For me only worked with the file name extension seems to be optional though , but not with the fully qualified class name: javap -c -p MyClass. It is powered by the Java Bytecode Decompiler plugin, which is bundled and enabled by default.

So if you already have the IDE, give it a try and let us know what you think in the comment section. Thanks for the article. I have been using this feature of InteillJ for many years, and find it invaluable. There is one slight annoyance with it though, which might just be me not having things configured correctly.

Sometimes when I stepping through code in the debugger, I will hit a class that I do not have the source code for, and the class will be seamlessly de-compiled and I will step into it. Many times this is not what I want. I would like to be able to flag a class or set of classes to be stepped over and not de-compiled so that I can step through just the classes I am actively working on.

Is that possible? Thanks again. If you already did that, please let me know its ID so that we could take a closer look. Thanks a lot! Sometimes I would like to see what the compiler does with my classes. Java Basics. Many times, we need to understand what a compiler is doing under the hood.

How java statements we are writing, will be reordered and executed. Also, we need to see the byte code for learning purpose also, I do it seldom. In this tutorial, I am giving an example of how to generate the byte code for a class file in java.

To demonstrate the example, I am using the java file created for the my other tutorial related to automatic resource management in java 7. Subscribe to get new post notifications, industry updates, best practices, and much more. Directly into your inbox, for free.