What are the key differences between Java and C++?

Question

Accepted Answer

Java is platform-independent and object-oriented, while C++ is platform-dependent and supports both procedural and object-oriented programming.

Java is platform-independent due to the Java Virtual Machine (JVM), while C++ is platform-dependent and compiled directly to machine code.
Java uses automatic garbage collection, whereas C++ requires manual memory management using 'new' and 'delete'.
C++ supports multiple inheritance, allowing a class to inherit from multiple base classes, while Java only supports single inheritance.
Java has a rich standard library and built-in support for multithreading, while C++ relies on external libraries for similar functionality.
In Java, everything is an object (except for primitive types), while C++ allows both object-oriented and procedural programming.

Accepted Answer

C++ and Java differ in their platform dependency, memory management, and use of classes. C++ is platform dependent and needs to be compiled on every platform.

Accepted Answer

C++ is platform dependent and needs to be compiled on every platform. Java is platform-independent.

C++ is only a compiled language while Java is both compiled and interpreted.

C++ is a procedural and object-oriented language, whereas Java is only an object-oriented language.

Accepted Answer

java:

Platforms indepentdent
Rus mutiple appliction time
simple programming language
no header file
oops concept

C++:

platforms depentdents
Rus single applications
header file
error completing the whole program

Asked in Cognizant and 14 others

What are the key differences between Java and C++?

Interview Questions from Popular Companies