DJ Java Decompiler is Windows XP, Windows 2003, Windows Vista, Windows 7, Windows 8, 8.1 and 10 decompiler and disassembler for Java that reconstructs the original source code from the compiled binary CLASS files (for example Java applets). DJ Java Decompiler is able to decompile complex Java applets and binaries, producing accurate source code. /. Online Java Compiler. Code, Compile, Run and Debug java program online. Write your code in this editor and press 'Run' button to execute it.
Here is a CAP file possible containing a malware code, without source code, and also- Java Applet free download - Java Runtime Environment (JRE), DJ Java Decompiler, Java Runtime Environment (JRE) (64-Bit), and many more programs.
- DJ Java Decompiler can parse complex Java applets and binary files and generate precise source code. This software lets you quickly get general information about class files. It may be easy to compile Java files with the DJ Java Decompiler. DJ Java Decompiler is a standalone Windows application and does not require Java installation.
- To decompile a Java class file, you're going to need some software specially made for decompiling Java class files (also called reverse-engineering). In this article we're going to show you how to decompile Java class files with a software package that goes by the name of Mocha.
It is a CAP file for
I have a big experience Java reverse-engineering in Classic JVM and Dalvik. But Java Card is lesser popular and closer platform. Most tools are for CLASS/JAR or DEX, not CAP.
I found the several tools (including some VMs who simulates the JCOP) which could disassemble a CAP file, but the CAP is quite big, and the working with assembly code is too complex and slow for me.
![Applet Applet](http://3.bp.blogspot.com/-9w0rta1N1y8/T-GGC13ChwI/AAAAAAAAACM/XCfUDLPVMDM/s1600/4.png)
Decompile Java Appleton
Too many differences between CAP bytecode and Java bytecode. Not just method table, it is also a big amount of different opcodes.
Just decompile the converter.jar of a Java Card Kit (it is a tool which converts CLASS -> CAP) and see that conversion is a quite complex process.
I need some automated converter.
Meanwhile, I developing a set of smart card solutions and the 'CAP decompiler' will be a good piece in the list.
Yes, I'm going to write it.
I plan to build it on top of Javassist from one side, some CAP disassembling library from the second one, and some standard Java decompiler(-s) from the third one.
But I should be sure that there are no analogs.
![Java class file decompiler Java class file decompiler](https://www.tech-faq.com/wp-content/uploads/2009/02/Java-Decompiler.jpg)
I have a big experience Java reverse-engineering in Classic JVM and Dalvik. But Java Card is lesser popular and closer platform. Most tools are for CLASS/JAR or DEX, not CAP.
I found the several tools (including some VMs who simulates the JCOP) which could disassemble a CAP file, but the CAP is quite big, and the working with assembly code is too complex and slow for me.
And we cannot simply do 'CAP text bytecode -> Notepad++ --> some Java Bytecode editor -> Java bytecode'.
Decompile Java Appleton
Too many differences between CAP bytecode and Java bytecode. Not just method table, it is also a big amount of different opcodes.
Just decompile the converter.jar of a Java Card Kit (it is a tool which converts CLASS -> CAP) and see that conversion is a quite complex process.
I need some automated converter.
Meanwhile, I developing a set of smart card solutions and the 'CAP decompiler' will be a good piece in the list.
Yes, I'm going to write it.
I plan to build it on top of Javassist from one side, some CAP disassembling library from the second one, and some standard Java decompiler(-s) from the third one.
But I should be sure that there are no analogs.
QUESTION IS HERE:
Is there some tool in the Earth which can convert Java Card *.cap to Java *.class (or decompile *.cap directly) or no?
(Also if you know some pitfalls in this bytecode conversion I will be grateful if you'll describe them to me. Now I saw it as just a copying one opcode list to another one with a giant if..else if..else if..else if.. or switch..case..case..case tree (and some misc staff i.e. conversion of access modifiers, fields, etc).
CAVAJ Java Decompiler is a free open source Java decompiler for Windows that can transform java applets, mobile apps and archives back into human-readable code.
If you've been searching for a Java decompiler for Windows, CAVAJ is worth a look! The first thing we love about this lightweight open source decompiler contains no Java dependent libraries, so you'll be able to work with code even if the machine you're working on doesn't support Java.
Sims 4 woohoo for money mod. As soon as you open the program for the first time you'll notice how clean and simple the interface is – quite notable for a decompiler! It's built on the standard IDE interface that most programmers and reverse engineers have come to know and love, and you even get a nice little status bar at the bottom of the program window that shows how fast/long an operation has until completion.
While you won't need to be an expert to perform basic decompiling functions but you might need some more advanced know-how to decipher more complex archives with this program. This is not like the C decompilers of yore that walked you through what everything did – it simply shows you the compiled byte code, not list everything out for you to reverse engineer for your project.
It's important to note that you can easily run into an info-dump of random variables, operators, and letters when decompiling large or messy archives that can make it hard to decipher what you're looking at. CAVAJ Java Decompiler has a tendency to frontload a lot of code in a way that just won't make sense, and you might need access to more advanced deciphering techniques to really understand what you're looking at on the screen.
Another gripe we have is the fact that there is no syntax highlighting included with the program like you might see in some other comparable decompilers. This means that if you're just trying to find a specific variable or class you might be out of luck, depending on what method the decompiler uses to decipher the data.
If you're looking for a fast and easy way to decompile Java files, archives, applets, etc. CAVAJ Java Decompiler is fantastic – but if you're a newbie to Java looking for syntax highlighting and help, you'll want to find another program.
Java Class File Decompiler
Pros
- Decompile Almost Any Kind of Archive CAVAJ Java Decompiler can decompile virtually any Java applet, app, archive or file within a few minutes.
- Fast and Easy to Use This decompiler works fast and features a clean and stylish IDE interface.
- You Don't Need Java to Run It CAVAJ isn't built on Java so you can run it even if Java isn't installed on your local machine.
Decompile Java Jar
Cons
- Can Require Expertise to Decipher More Complex Archives The default deciphering mechanism can be clunky and frontload variables in a weird way; some expertise may be required for advanced operation.
- Missing Syntax Highlighting You won't be able to highlight by specific syntax or variable.