Sunday, 15 January 2012
JAVA : public static void main(String args[]) - Explanation.
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static - Java environment should be able to call this method without creating an instance of the class , so this method must be declared as static.
void - the return type of this method is void means there's no return value.
String args[] - arguments to this method. This method must be given an array of Strings, and the array will be called 'args'.
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84 Responses to “ JAVA : public static void main(String args[]) - Explanation. ”
14 April 2012 at 13:00
thanx
15 April 2012 at 08:49
@Mubarok
you r welcome my friend!!
thanks for commenting!! :)
18 April 2012 at 15:10
Good explanation. Why main is made public static in Java is also a popular question where this explanation can be used.
15 July 2012 at 22:42
excellent explanation about usage of static in main method......
15 July 2012 at 23:15
@Bharath....
...Thanks a lot my friend!!
19 July 2012 at 18:54
THNX..
27 July 2012 at 11:59
shukriya boss...really worthy explanation
1 September 2012 at 13:50
it was helpful
5 September 2012 at 14:57
i not satisfy with the main() explanation , pls give clearly
14 September 2012 at 06:17
thanks ,it is really helpful............
15 September 2012 at 00:17
We can also use
public static void main(String ...args) instead of
public static void main(String args[])
3 October 2012 at 13:41
yeas Sudhanshu (String args[]) is as same as (String...args)
11 October 2012 at 12:22
thanks friend,very useful info..
public static void main(String []args) this is also one of the method to declare string array.
12 October 2012 at 18:49
Than,s FRND
30 October 2012 at 22:55
what if declare main() as private or protected ?????
5 December 2012 at 08:44
super explain
16 December 2012 at 22:16
can we define main as private or protected?
19 February 2013 at 20:05
main() method tell us the begin of the program execution
17 March 2013 at 17:18
we can define main() as private or protected and ofcourse The program compiles properly but at runtime it will give “Main method not public.” message.
23 March 2013 at 10:23
why should "s" be capitals in "String args[]" ?
6 April 2013 at 21:41
instead of String can we use datatypes like int,char....???
23 April 2013 at 12:39
's' in "String agrs[]" is capital beacause String is the name of class we are using and it should be capital
18 July 2013 at 10:33
What do you mean by public-every one can access it
9 August 2013 at 09:08
can i use private instead of using public
9 August 2013 at 23:16
No!
Main is call by JVM [Java Virtual Machine],
which is actually outside the project,
so, the access specifier of this method must be public.
8 September 2013 at 19:36
Main - JVM has to know the name of the method it is going to run. It could have been called "lollipop"for all the JVM cares as long as it is known and constant.
String[] - running a program from the command line means you can pass arguments to it. This is where those arguments get placed so that your program can handle them.
8 September 2013 at 23:10
Hi, Have one question..
Why the parameter of String[] needs to be passed in the main method, do we use it by somehow?
Please reply.. waiting to hear you soon..
8 September 2013 at 23:40
The parameter of String[] is for for command-line arguments in Java.
Check this link for command-line arguments : http://docs.oracle.com/javase/tutorial/essential/environment/cmdLineArgs.html
Or, in Eclipse also, you can simply try this:
Code:
public class TestMain {
public static void main(String[] args) {
for (int i = 0; i < args.length; i++) {
System.err.println(args[i]);
}
}
}
and now -> Right click -> run as -> run configurations -> select this class -> go to Arguments tab -> write some thing on Program arguments text area -> click apply -> clcik run
your inputs will be printed on eclipse console
3 July 2014 at 21:01
how can jvm enter in default class
in packages if a class is default its public methods cant be acccessed from outside
so if our class is default and we have public static void main(String arg[]){} in it how does jvm accesses this method
26 March 2017 at 12:52
Awesome article thanks a lot for this
23 May 2017 at 15:00
The main() method is the starting point of an application. When a program starts running, it has to start execution from somewhere. That somewhere is called main. Without it, there is no place to start running a Java program.
How the main Method Gets Called?
When the Java interpreter executes an application, it starts by calling the class's main() method. The main method then calls all the other methods required to run your application.
More...Java Interview Questions
Ling
31 May 2017 at 17:05
Welcome Post very usefull informatation.and iam expecting more posts like this please keep updating us........
7 September 2017 at 18:58
thanks for sharing this information Java main method .
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Hi Mate,
Love it absolutely! So crystalline. No mumbo jumbo. No non-sense. Straight and simple. You guys need a standing ovation for your good work.
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What is the reason the program does not work after the final step? Is this surprising?
But nice Article Mate! Great Information! Keep up the good work!
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