Skip to main content

Small concept about OOPs

Some small concept about OOPs:-In many books and website write about OOPs concepts as hundred percent object oriented, pure object oriented and partial object oriented language.

Hundred percent object oriented:-In the hundred percent object oriented movie hero is object, without object program is incomplete that means can not execute program without object. Without class and object programming or application development is not possible.

Example of hundred percent object oriented language is Smalltalk.

Pure object oriented:-In the object oriented cinema obviously object is the hero. In pure object oriented language object having same importance but in this having some relax that is without creating object we can successfully execute our application. So in the object oriented programming without class we cannot create or run our application, class is must.

Example of pure object oriented language is Java.

Partial object oriented:-In this type of language classes and objects both are not compulsory for creating and running of application. That means we can write a program without using class and we can write classes in our program.


Example of partial object oriented language is C++.


Properties of java
Why java is famous:-java language having some properties that‘s why java is famous.

·         Java is a platform independent:-this is one of the greatest features of java. Java is developed for this feature because before development of java, James gosling and team want to develop a platform independent language for communication of electronic devices that should be control remotely.
Here platform means hard ware and operating system (Software) where application run. Due to this feature java application run on any hardware configuration and any operating system.
Platform independent is also known as compile once and run where, it means if we compile our java source code (.java file) on windows (OS) machine then after compilation it produce byte code (.class file).this byte code can run on any other machine like Solaris (OS) or any other operating system.java is a platform independent due to only byte code, that means java byte code is platform independent.
Java uses both language translator compiler and interpreter, java compiler (javac.exe) is responsible for generating byte code and java interpreter (java.exe) is responsible to execute this byte code.

·         Java is secure:-if any language directly uses operating system libraries for execution then those languages having security issues, but java uses own libraries for execution known as java runtime environment (JRE).


·         Java is portable:-portability means shifting or distributing applications onto different machines it is not a major issue but on every machine application should be run and produce unique output so java is a portable language.


Labels:

Comments

Post a Comment

Popular posts from this blog

Introduction of Java

Java is a high level programming language which is used for creating various types of software's or applications. Types of java applications:- 1)     Stand alone application 2)     Desktop based application          3)     Web based application 4)     Enterprise application etc. Stand alone application:- Stand alone application run on single machine without user interface and every stand alone application having main method. Desktop based application:- Desktop based application also run on single machine with user interface and every Desktop based application having main method. Web based application:- Web based application run on web, web based application not required main method but for such types of application need server. Enterprise application:- Enterprise application is category of web application where doing some business or involve some money related issues. Java Editions: - There are four Java platforms. ·       
2 comments
Read more

java print

Syntax of main method in java is    public static void main(String[]args)  before understanding about main method we have to understand that who is responsible for main method.if we write a simple program or write a simple java class without main method like      Test.java           class Test      {      } above program will compile successfully.for compilation of  java file use  javac tool  or  javac.exe  file. javac Test.java it means compiler checks only syntax of class that means compiler does not check the main method in the file or program,so that compiler is not responsible for main method in java. After successfully compilation of above program we have to run the generated byte code. java Test Error: Main method not found in class Test, please define the main method as:    public static void main(String[] args) So JVM (java virtual machine) or java interpreter is responsible for main method,first jvm check that the main method is pres
Post a Comment
Read more