what the difference betweens java and c++?

Question

JAVA AND C++

Answer 1

They're very different languages, so much so that I wouldn't even compare them. Java is a bytecode language and executed within a virtual environment, while C++ is a language that compiles down to machine code.

Java is a "compile once, run everywhere" language. C++ programs on the other hand need to be compiled seperately for every operating system you want to run it on.

Also, Java is a garbage collected language, which means you don't have to free memory allocated on the heap, but you need to do it yourself in C++ (or maybe not if you use RAII or smart pointers).

There's a ton of other differences between these two, and they're both great for different programs and problems. C++ is very fast and consistent, Java is a bit sluggish but is more high level.

Answer 2

علي بله hi
C++ uses only compiler, whereas Java uses compiler and interpreter both. C++ supports both operator overloading & method overloading whereas Java only supports method overloading. C++ supports manual object management with the help of new and delete keywords whereas Java has built-in automatic garbage collection.

Answer 3

The first C is a compiled language (you need optimize / have a version of your program by SO), and Java is an interpreted language: you write code that is compiled to bytecode and then by each SO you have a JVM interpeting this bycode

With this you can imagine that C is faster than Java when running.

With C you need manage memory, Java has garbage collector

Normally with C you can work at low level to for example develop drivers, exposing a JNI interface and consume it from Java as native methods.