Class file to java file conversion

is it possible to convert .class file into .java file & if yes
then how to convert .class file into .java file.
plz. mail me ans. on [email protected] | [email protected]

Yes there are many Java Decompilers which converts the Java bytecode class files to Source files, You may find the follwing URLs helpful:
http://www.brouhaha.com/~eric/computers/mocha.html
http://members.fortunecity.com/neshkov/dj.html

Similar Messages

How to convert a .class file into .java file without .jad using DeJDecompil

Hi all,
I am using DeJDecompiler and working with swing applications.If I try to convert a .class file into .java file,it is converting into .jad file only.Fine but if I try to save that file into .java file,It is giving lot of errors in that program.When I went into that program the total style of the program is changed and TRY-CATCH block is not recognised by the dejdecompiler,hence If I try to include some methods in the existing .java file thus got,I could not do.Kindly help me.
If I get the .java file without error then I can process the rest of the functionality.
Thanks in advance
With kind Regs
Satheesh.K

Not so urgent today then!
http://forum.java.sun.com/thread.jsp?thread=553576&forum=31&message=2709757
I'm still not going to help you to steal someone�s code.

How to convert .class files to .java files

Hi,
I want to convert .class files to .java files. Is there is any software for that doing except Dj DCompiler? Because if i am using this i am not getting proper code i mean as it is available in the file.
I tried by writing simple java file and i compiled Sample.java file and i got a .class file then i converted this Sample.class to Sample.java file by using DjDcompiler but i was missing some statements i need entire code that is available in Sample.java file. Please tell me any other software for that doing.
Thank you in advance

I want to convert .class files to .java files.
iles. Is there is any software for that doing except
Dj DCompiler? Because if i am using this i am nothttp://www.google.com/search?hl=en&q=java+decompiler&meta=
getting proper code i mean as it is available in the
file.I doubt you ever will.
I tried by writing simple java file and i compiled
Sample.java file and i got a .class file then i
converted this Sample.class to Sample.java file by
using DjDcompiler but i was missing some statements i
need entire code that is available in Sample.java
file. Please tell me any other software for that
doing.Did you hear about "compiler opimizations"?

How many classes should a .java file contain?

Are there any general guidelines on how many Java classes should be contained in a single .java file? I've been creating a new .java file for each class I write but see examples in Sun's Java tutorial where there are at least two classes in a single .java file. One such case is the TableDemo example at
http://java.sun.com/docs/books/tutorial/uiswing/components/example-swing/TableDemo.java
Thanks.

The example you point to isn't really more the one class in one java file. It makes use of an inner class. An inner class is something different! As far as I understand it, it is mainly used to implement some behaviour (in this case AbstractTableModel behaviour). If the MyTableModel was in a separate class file, it couldn't access the variable of the main TableDemo class. So they use an inner class.
So unless you need inner classes, this example is no reason to put more than one class in a .java file. In general, just put one class in a .java file. It's easier for everybody.

How to convert class files into java files??

Hey Guys,
I need a little help.
I want to know wheather we can view .class files as .java files or convert the .class to .java files.Is ther any tool or software for doing that.
Or in other words can i see the source code of any .class file..??
Plz do tell me if we can do that or any other way we can do that.
Regds,
Gokul

Sort of. A "decompiler" will take a class file and generate a source code file of source code that could be compiled to get the class file you started out with. However, it won't be the same source code that was originally used to create the class. Most notably, comments will be missing, and variable names will probably be meaningless.
And before you say "java is bad because you can decompile it", note that any language that you can execute you can theoretically decompile.
Also, you can view the raw byte codes. If you're familiar with assembly language, or better yet familar with java bytecodes and the JVM in particular, you can often find out what a particular method does just by viewing the byte codes.

How to decode java class file to java file

hi
how to decode java class file into java file
regards
kedar

Its really.......... really BAD.
Write ur own code... or use open source code..
Its a bad practice...
however i am telling u ..there is DJ java decompiler.
but mind it there are Obfuscator also....like codeshield and others
take care...
Alok

If you have two public class in a java file what will be the error ?

Q:If you have two public class in a java file what will be the error and how will you remove that.?

Kannan_S wrote:
I dont want you to be on that list . Here goes my explanation..
A class is well defined with members and functions
An abstract class is not defined well as compared to a full fledged class (talking more generically)
An interface is more abstract.
I was asking the author who has posted this question to be like a class(very clear)
and not either as an abstract class or an interface
Hope i have made it clear..Not in the slightest. This has absolutely no bearing whatsoever on the question asked. Not to mention that classes are classes, and all equal in the eyes of the compiler, be they abstract, concrete or interfaces. It's difficult to see what your point is, to be honest, but I suspect it wouldn't be worth seeing anyway

How to decompile a .class file into .java file using DEJDecompiler?

Hi all,
I am using DeJDecompiler and working with swing applications.If I try to convert a .class file into .java file,it is converting into .jad file only.Fine but if I try to save that file into .java file,It is giving lot of errors in that program.When I went into that program the total style of the program is changed and TRY-CATCH block is not recognised by the dejdecompiler,hence If I try to include some methods in the existing .java file thus got,I could not do.Kindly help me.
If I get the .java file without error then I can process the rest of the functionality.
Thanks in advance
With kind Regs
Satheesh.K

Not so urgent today then!
http://forum.java.sun.com/thread.jsp?thread=553576&forum=31&message=2709757
I'm still not going to help you to steal someone�s code.

Decoding .class file into .java file

How can i decode .class file into .java file?
can any one suggest the same?

sekhar145 wrote:
How can i decode .class file into .java file?by using a decompiler
JAD is a known one , i am sure there are other on the internet, use you favourite search engine on Java Decompiler
can any one suggest the same?by using a decompiler
JAD is a known one , i am sure there are other on the internet, use you favourite search engine on Java Decompiler

PROBLEM IN SAVING A FILE AS JAVA FILE

PLEASE TELL ME ANYBODY RELATED TO THIS TOPIC,
I WANT TO SAVE MY FILE AS .JAVA FILE ,BUT IT SAVES AS .TXT FILE.

Man!! Looks like I'm thinking of everything from a develpment point of view!! Need to go out and smell the air!! ;O))
Doing it by placing the file name in quotations is the best way to go about it, what I also do is that I set my windows to show me extentions for all files as well so that I know whats happening.
Tools -> Folder Options [View Tab]
Un-check "Hide extentions for known file types"
then your file name will appear as abcd.java.txt, which you can rename removing the .txt part from it.... :O)
Regards
Omer

How to run perl file from java file..???

Hi All,
How to run a perl file from java file.I know that there is one JPL(Java-Perl Library) preprocessor which can be used to do this,but no idea of how to do it..
Any help is appreciated.
Thanks in advance.

viswa07 wrote:
Ok and any idea regarding JPL..????I don't know it and the first few posts that I found mentioned it using Java 1.1-style JNI calls, which hints at a dead project. And you don't want to use a dead project.

Convert .class files into .java files???

Does anybody know how to convert x.class file back to a x.java file. Or in other terms, extract .java files from a jarfile??
Thanks for any help
/carlos

Does anybody know how to convert x.class file back to a x.java file.As Dr.Clap said, that's decompiling.
Or in other terms, extract .java files from a jarfile??That isn't quite the same thing. You can decompile a .class that's in a jar, but a .class file doesn't have to be in a jar and a file in a jar isn't necessarily a .class.

Can you have multiple classes in one .java file ?

or am I being dumb ;-)
I'm guessing not because the filename has to match the classname but maybe you can ... ?
C

To elaborate a bit more. The public class must match the filename, however you can declare "inner" classes.
An inner class can be declared inside another class, or even inside another method. Where you declare that class dictates the scope it will have. However, the lack of an ability to declare these classes public (a public class must be declared inside a java file with the same name), means that they are not visible anywhere else. However, they do still have plenty of uses.
Declaring a class inside a method is used rarely, but would look something like
public void foo(Bar myBar = new Bar
        private String baz = "Hello";
        public String doSomething()
             return baz;
     myBar.doSomething()
}This declares and implements the class Bar inside the method header. Sure, this is a pretty useless example, but you could put any methods or variables inside your inner class, and they would be available only during execution of that method. (ie. only have method scope).
}

How to decode .class files to .java files?

I just want to know that how can I decode .class files back to .java files?
If anybody can tell, it will be of great help.

On a related note, how can I make it such that this cannot be done?
I understand the format is not private so it's not impossible for someone to go backwards.
I'm also aware of some programs that alter your source to make it more difficult for people to understand after decompiling it.
Regards,
Nick G.

Is there only a class in a .java file?

Can a .java file include more than one class?

mostly the others R inner classes but it doesn't have to be like that...
Take a look @ Thinking in Jave 2 by Bruce Eckel is good explanaition about that topic

Class file to java file conversion

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