Q:    Are the original C++ files altered in any way?

A:    Your existing code is left completely intact.  The new Java files are written to the new location that you specify.

Q:    What is the conversion accuracy?

A:    Our accuracy is the highest in the industry, but there will be significant adjustments required for all but the most trivial conversions.  C++ code is much more complex than Java code, so there are no direct equivalents for many aspects of C++.  Read the rest of the FAQ to get an idea of a few things that are not converted.  C++ to Java Converter is intended to reduce the amount of work you'll have to do to convert code to Java, but it is just the first step.  Code that is heavily dependent on pointer manipulation is better left in C++.

 

Q:    What type of code can be converted?

A:    C, C++, Managed C++ (VC++ 2003), and C++/CLI (VC++ 2005 and above).

 

Q:    What about MFC and ATL resources?

A:    C++ to Java Converter does not convert MFC or ATL resources. 

 

Q:    What about STL Containers?

A:    C++ to Java Converter converts most references to std::vector, std::list, std::queue, and std::stack.  A few methods of these containers that have no equivalent are not converted.

 

Q:    What are the most common adjustments necessary after conversion?

A:

●  Most C/C++ library function calls are not converted.  However, we do convert a subset of the C-based string, keyboard I/O, math, and utility function calls, and some of the C++ keyboard I/O methods (cout and cin), STL-based string class methods, and STL containers (vector, list, queue, and stack).

 

●  Some pointer and address manipulation may remain in the converted code.

●  There are no simple equivalents to C++/CLI delegates and events in Java, so these must be refactored.

●  Multiple inheritance is not converted since it is not available in Java.

●  Operator overloading is not available in Java. These methods are marked with a comment.

●  Function pointers cannot be converted to Java since Java lacks true delegates.

●  Since Java lacks a preprocessor, all code dependent on conditional compilation needs to be refactored so that the functionality can be achieved in other ways.  You can avoid this if you choose to target the NetBeans preprocessor (C++ to Java Converter includes an option for this).

●  C++ templates are converted to, but are only roughly equivalent to, Java generics.  These will likely require further attention.

●  Bit-by-bit copying of objects via the assignment operator is not the default in Java.  We attempt to detect these cases and convert the assignment to a call to either the copy constructor (if used in a variable initialization) or the converted assignment operator overload (which is converted to a 'CopyFrom' method) and also provide a 'Warning' comment.

●  Java does not allow embedded assembly instructions.  These are marked with a comment.

●  Types cannot be declared with methods in Java.  These are marked with a comment.

●  There is no equivalent to friend functions or friend classes in Java.  These are marked with a comment.

●  Unions and bit fields have no elegant equivalent in Java.  Unions are converted to classes and marked with a comment.