A Simple Java program?

class Sample
public  static void main (String args[] )

{

  System . out .println (“ java  is better  than  c++);

}

Class  declaration:

The first  line

class  Sample

  • Declaration   a class  which  are  an object  oriented construct.
  • Java  is  true  object   oriented language  and   there fore  every thing  must be placed  in side  class
  • Class  is  a  keyboard  declares  that  a new class  definition  follows. Simple  is  a  java  identifies  that specific the no of  the  class  to be  defined.

Opening  brace :-

Every  class  definition  in  java  beginnings  with  an opening   brace ( ) and  ends  with    a  matching brace(}), appening   in the  last line.

The main line :-
                        The  third  line 
  public  static void  main (String args[])
Defines  a  method name main. This   is similar to  the  main function  in  c  language. Every  java application  program    must  be  include   the  main method. This   is  the starting point  for the  interpreter  to  begin  the   execution  of  the  program.  A  java  application can  have  any  number  of  classes  but  only  one  of  them  must   include  a  main  method, to  initiate  the execution.

This   line  contains  a number  of keywords  public, static, void

Public:-
 The keyboard  public  is  an  axis specifics   that declares  the  main  method  has  un  protected  and  there  fore  making  it  accessible   to all other  classes.

Static:-
Next  appears   the keyboard  static. Which  declares  this  method  as  one  that  belongs  to  the  entire  class, and not 4 part of any  objects  of  the class. The main  must  always  be  declared  as static since  the  interpreter uses  this  method before  any objects  are  created.

Void:-
The  type  modifier  void  states  that  the main method  doesn’t  return  any value.

The output  line :-
The  only  executable  statement  in  the  above program is
System. out. println
This  is  similar  to the  printing  statement in since  java  is a  true object  oriented   package , every method must be  a  part  of  an  object. the  println   method  is  a member  of  the out object, which is  a  data member  of  system  class. This  line prints  the scan.

Java   is  better  than  C ++ 

The  method  print  is  always  appends  a new line  character.
This  means  any  sub request  output  will  start  on  a  new line.


Related

Java 2934619997327260981

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