Saturday, 5 January 2013

Defination of API

An API is a collection of packages. A packages is a collection of classes , interface and sub packages. A sub package is a collection of classes , interfaces , and sub packages e.t.c .

D.  Java programing environment contains user friendly syn taxes so that one can develop effective applications compared to all the programing languages Java syn taxes are so easy .

2. Platform Independent :-

A language or Technology is said to be platform independent if and only if whole applications must run on every operating system without considering their vendors . To say a language / Technology is platform independent then it has to satisfy two properties . They are

a. The language data types " Must take " same amount of memory space on every operating system .

b. the language must contains some special programs which will convert from one understanding form of one as to another understanding form of another OS.


The C, C++ applications are platform dependent because

- The C , C ++ data types will take different memory spaces on different O.S.

- The C , C++ software are not containing any special programs to convert from one understanding form of one O.S to another understanding form of another O.S .

     The Language like Java and their applications are treated as platform independent, because of

- Java language  data types will take same amount of memory space on every O.S .

- Java software ( JDK ) contains some special programs for converting one format of one O.S to another format of another O.S.




 

 

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