Difference between the Java and C language and C ++ language

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How is Java different from C… 

 C Language

  • Major difference is that C is a structure oriented language and 
  • Java is an object oriented language and has mechanism to define classes and objects. 
  • Java does not support pointer type.
  • Java does not have preprocessor, so we cant use #define,#include and #ifdef statements. 
  • Java does not include structures, unions and enum data types. 
  • Java does not include keywords like goto, sizeof and type def. 
  • Java adds labeled break and continue statements. 
  • Java adds many features required for object oriented
    programming.
 How is Java different from C++…

 C++ language 

Features removed in java:
  • Java doesn’t support pointers to avoid unauthorized access
     of memory locations.
  •  Java does not include structures, unions and Enum data
      types.
  •  Java does not support operator over loading.
  •  Pre-processor plays less important role in C++ and so
      eliminated entirely in java.
  •  Java does not perform automatic type conversions that   result in loss of precision.
  •  Java does not support global variables. Every method and variable is declared within a class
     and forms part of that class.
  •  Java does not support inheritance of multiple super classes by a sub class  (i.e., multiple inheritance). This is accomplished by using ‘interface’ concept.
  •  It is not possible to declare unsigned integers(Unsigned can hold a larger positive
      value, and no negative value.
  •  In java objects are passed by reference only. In C++ objects may be passed by value or reference.

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