The differences between C++ and Java are given in the following
table.
Comparison
Index
|
C++
|
Java
|
Platform-independent
|
C++ is
platform-dependent.
|
Java is
platform-independent.
|
Mainly
used for
|
C++
is mainly used for system programming.
|
Java
is mainly used for application programming. It is widely used in window,
web-based, enterprise and mobile applications.
|
Design
Goal
|
C++ was
designed for systems and applications programming. It was an
extension of C programming language.
|
Java
was designed and created as an interpreter for printing systems but later
extended as a support network computing. It was designed with a goal of being
easy to use and accessible to a broader audience.
|
Goto
|
C++
supports the goto statement.
|
Java doesn't
support the goto statement.
|
Multiple
inheritance
|
C++
supports multiple inheritance.
|
|
Operator
Overloading
|
C++
supports operator overloading.
|
Java
doesn't support operator overloading.
|
Pointers
|
Java
supports pointer internally. However, you can't write the pointer program in
java. It means java has restricted pointer support in java.
|
|
Compiler
and Interpreter
|
C++
uses compiler only. C++ is compiled and run using the compiler which converts
source code into machine code so, C++ is platform dependent.
|
Java
uses compiler and interpreter both. Java source code is converted into
bytecode at compilation time. The interpreter executes this bytecode at
runtime and produces output. Java is interpreted that is why it is platform
independent.
|
Call
by Value and Call by reference
|
C++
supports both call by value and call by reference.
|
Java
supports call by value only. There is no call by reference in java.
|
Structure
and Union
|
C++
supports structures and unions.
|
Java
doesn't support structures and unions.
|
Thread
Support
|
C++
doesn't have built-in support for threads. It relies on third-party libraries
for thread support.
|
Java
has built-in thread support.
|
Documentation
comment
|
C++ doesn't
support documentation comment.
|
Java
supports documentation comment (/** ... */) to create documentation for java
source code.
|
Virtual
Keyword
|
C++ supports
virtual keyword so that we can decide whether or not override a function.
|
Java
has no virtual keyword. We can override all non-static methods by default. In
other words, non-static methods are virtual by default.
|
unsigned
right shift >>>
|
C++
doesn't support >>> operator.
|
Java
supports unsigned right shift >>> operator that fills zero at the
top for the negative numbers. For positive numbers, it works same like
>> operator.
|
Inheritance
Tree
|
C++
creates a new inheritance tree always.
|
Java
uses a single inheritance tree always because all classes are the child of
Object class in java. The object class is the root of the inheritance tree in java.
|
Hardware
|
C++
is nearer to hardware.
|
Java
is not so interactive with hardware.
|
Object-oriented
|
C++
is an object-oriented language. However, in C language, single root hierarchy
is not possible.
|
Java
is also an object-oriented language. However, everything (except
fundamental types) is an object in Java. It is a single root hierarchy as
everything gets derived from java.lang.Object.
|
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