I have some .class files that I need to convert to .java so I did:
javap -c ClassName.class
and all the time I have the same error
ERROR:Could not find ClassName.class
Do you guys have any idea of what might be the cause? I did man javap and as far as I know, the syntax is correct. If there is another way to convert it to a .java file, I am more than willing to try.
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java
javap to read the bytecodeThe javap command takes class-names without the .class extension. Try
javap -c ClassName
javap will however not give you the implementations of the methods in java-syntax. It will at most give it to you in JVM bytecode format.
To actually decompile (i.e., do the reverse of javac) you will have to use proper decompiler. See for instance the following related question:
I'm guessing that either the class name is wrong - be sure to use the fully-resolved class name, with all packages - or it's not in the CLASSPATH so javap can't find it.
This is for Mac users:
first of all you have to clarify where the class file is... so for example, in 'Terminal' (A Mac Application) you would type:
cd
then wherever you file is e.g:
cd /Users/CollarBlast/Desktop/JavaFiles/
then you would hit enter. After that you would do the command. e.g:
cd /Users/CollarBlast/Desktop/JavaFiles/ (then i would press enter...)
Then i would type the command:
javap -c JavaTestClassFile.class (then i would press enter again...)
and hopefully it should work!
I used the http://www.javadecompilers.com but in some classes it gives you the message "could not load this classes..."
INSTEAD download Android Studio, navigate to the folder containing the java class file and double click it. The code will show in the right pane and I guess you can copy it an save it as a java file from there
Source: Stackoverflow.com