Relationship Between C, C++ and Java

Difference between C Language and Java

There are many differences and similarities between C programming language and Java. A list of top differences between C and Java are given below:

S.No	C Language	Java
	C does not support object-oriented programs. It is a procedural programming language.	Java is pure object–oriented programming language.
	C uses structure, union and enum data types.	Java does not support data types like structure, union and enum.
	C uses type modifiers keywords auto, extern, register, signed and unsigned.	Java does not define the type modifiers keywords auto, extern, register, signed and unsigned.
	C uses preprocessors #define, #include and # ifdef.	Java does not have a preprocessors like #define, #include and #ifdef.
	C uses malloc function to allocate memory at run time.	Java use new operator to allocate memory at run time.
	C supports both call by value and call by reference.	Java supports call by value only. There is no call by reference in Java.
	C support global variables. We can declare variable outside a main function also.	Java does not support global variables. Every variable and method is declared within a class.
	In C, Pointers can be used.	There is no concept of pointers in Java.
	C supports goto statement.	Java doesn't support goto statement.
	In C we must include a header file before using a header file function.	There is no concept of header files in Java. Only packages are used.

Difference between C++ and Java Language

There are many differences and similarities between C++ programming language and Java. A list of top differences between C++ and Java are given below:

S.No	C++ Language	Java
	C++ is Platform dependent.	Java is Platform Independent.
	C++ uses compiler only.	Java uses compiler and interpreter both.
	C++ is basically a C language with object-oriented extension.	Java is pure object – oriented language.
	C++ uses operator overloading concept to overload operator.	Java doesn't support operator overloading.
	C++ uses template classes.	Java does not have template classes.
	C++ support multiple inheritance.	Java doesn't support multiple inheritance through class. It can be achieved by interfaces in Java.
	C++ uses destructor to destroy allocated memory.	Java has replaced destructor with finalize() method.
	C++ uses virtual function and virtual classes.	In Java, there is no concept of virtual keyword.
	Multi-threading programming cannot be possible in C++.	Java supports multi-threading programming.
	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.