Relationship Between C, C++ and Java

Difference between C Language and Java

There are many differences and similarities between C and Java language. Some differences between C and Java are mentioned below:

S.No	C Language	Java
	C does not support object-oriented programs concepts. It is a procedural oriented programming language.	Java support object–oriented programming language concepts.
	C uses structure, union and enum data types.	Java does not support data types like structure, union and enum.
	C uses type modifiers keywords like auto, extern, register, signed and unsigned.	Java does not support type modifiers keywords like 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, no call-by-reference concepts.
	In C, we can declare variables outside a main() function for global declaration.	In Java, variables and methods is declared within a class only. Declaration not possible output main() method.
	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 include a header file before using function.	In Java, there is no concept of header files, only packages are used.

There are many differences and similarities between C++ and Java language. Some differences between C++ and Java are mentioned below:

S.No	C++ Language	Java
	C++ is platform dependent.	Java is platform Independent.
	C++ uses compiler only.	Java uses compiler and interpreter both for converting source code into machine code.
	C++ is both a procedural and an object-oriented programming language.	Java is only an object-oriented programming language.
	C++ supports both method overloading & operator overloading concept.	Java supports only method overloading, operator overloading is not allowed.
	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.