C++ is one of the most powerful
language and will be used for a long time in the future inspite of emergence of
Java. C++ runs extremely fast and is in fact 10 to 20 times FASTER than Java.
Java runs very slow because it is a byte-code-interpreted language running on
top of "virtual machine". Java runs faster with JIT (Just-In-Time) compiler,
but it is still slower than C++. And optimized C++ program is about 3 to 4
times faster than Java (with JIT compiler).
Then, why do people use Java?
Because it is pure object oriented and is easier to program in Java, as Java
automates memory management, and programmers do not directly deal with memory
allocations. Because of manual memory
allocations, debugging the C++ programs consumes a major portion of time.
Since C++ programmers are abundant, it
is recommended you do programming in object-oriented "C++" for all your
application programming or general purpose programming. You can take full
advantage of object oriented facilities of C++. The C++ compiler is lot more
complex than "C" compiler and C++ programs may run bit slower than "C"
programs. But speed difference between "C" and "C++" is very minute - it could
be few milli-seconds which may have little impact for real-time programming.
Since computer hardware is becoming
cheaper and faster and memory 'RAM' is getting faster and cheaper, it is worth
doing code in C++ rather than "C" as time saved in clarity and re-usability of
C++ code offsets the slow speed. Compiler optimizer options like -O or -O3 can
speed up C++/C which is not available in Java. Nowadays, "C" language is
primarily used for "systems programming" to develop operating systems, device
Prefer to use web-server-side
programing "Fast-CGI" with C++ and HTML, DHTML, XML to get better performance.
Hence, the golden rule is "Web-server side programming use C++ and web-client
side (browser) programming use Java applets". The reason is - the server-side
OS (Linux) is under your control and never changes, but you will never know
what the client side web-browser OS is. It can be Internet appliance device
(embedded linux+netscape) or computers running Windows 95/98/NT/2000 or Linux,
Apple Mac, OS/2, Netware, Solaris etc.. The advantage of Java language is that
you can create "Applets (GUI)" which can run on any client OS platform.
Java was created to replace the
Microsoft Windows 95/NT GUI APIs like MS Visual Basic or MS Visual C++. In
other words - "Java is the cross-platform Windows-GUI Api language of next
century". Many web-browsers like Netscape supports Java applets and web-browser
like Hot Java is written in java itself. But the price you pay for
cross-platform portability is the performance, applications written in Java run
Hence, java runs on
"client" and c++ runs on servers.
Some facts: The usage of char *
and strcpy causes horrible memory problems due to "overflow", "fence past
errors", "memory corruption", "step-on-others-toe" (hurting other variable's
memory locations) or "memory leaks". The memory problems are extremely hard to
debug and are very time consuming to fix and trouble-shoot.
Memory problems bring down the
productivity of programers. Memory related bugs are very tough to crack, and
even experienced programmers take several days or weeks to debug memory related
problems. Memory bogs may be hide inside the code for several months and can
cause unexpected program crashes.
The memory bugs due to usage of char *
and pointers in c/c++ is costing $2 billion every year in time lost due to
debugging and downtime of programs. If you use char * and pointers in c++ then
it is a very costly affair, especially if your program size is greater than
10,000 lines of code.