India Broadband Forum

newprouser

1.

What is the purpose of using Strings [] args in the following statement, considering that no value is being returned to the main function.

public static void main (String[] args )

and then string [] means a string is being returned, so why the statement args, that too without being separated by comma ?


2. is it possible to have the following for loop like in C/C++


for ( ; condition ; )
{ ..
.. };

nandini

1. public static void main(String[] args) is the method from where your java application begins.
We can have multiple main method but the signature exactly matching to the above method, is recognised by jvm and it starts by calling that main method.
It's like entry point.

The purpose of using String[] args is that, you can provide inputs to your application before actually running it.

String[] args means array of String. Hope you know what array is.

2. Better to check for yourself. In my opinion it should run.

Luke Skywalker

String args[] also.
String... args also. This is called var args.
What nandini had said is right? rep+ to her for beating me to answer.

newprouser

well I have used C/C++ and OOPS in it too.

are you talking about operator overloading in the first para ??


not running. thats why i was wondering if there's any other alternative statement for that.

Punch Farce

NPU,

that's the equivalent of main (argc, argv) in C and C++

"String [] args" is the same as "char **argv" or "char *argv[]" for
all practical purposes.

they are the command line parameters when you run the program.

-F

what exactly is not working in your program?

nandini

1. It's not operator overloading. in fact java doesn't support operator overloading.

you can declare an array of String in two ways.

String[] arr=null; //more readable
String arr[]=null;

2.I think in for loop initialization is a must. So you can write like
for(int i=0;condition; ) //it should work.
by the way why the hell do you want to write it? Do you want to create infinite loop?

PS: Farce is right,as usual.

newprouser

Sorry can't rep now, will rep ya ASAIC

nandini

It doesn't matter anything to me. What really important is that whether you got your doubt cleared.

Punch Farce

break;
goto
return
exit

;-)

and what's wrong with infinite loops?
this is the program that NPU is writing

login to IBF
for ( ;forever; ) {
post
}


my online reputation is much better than my domestic one ;-)
I wish you could tell that to my wife ;-)

newprouser

thanks both of you , got the first one cleared.


well i'm not able to create a loop like this in java, atho it will work in C

for ((blank) ; condition ;(blank) )

even god won't know why i'm doing what i'm doing



nice idea farce, maybe i should use Fx and use a macro with it

---



i'd guess her reply to be "the boss is always right "

Luke Skywalker

It is working for me:-
class Main {

public static void main(String[] args)
{ int i=1 ;
for ( ;i >0 ; )
{
i=1;
}
}
}

newprouser

My bad, i had initialized ch1 as zero, so that was the problem.

Luke Skywalker

That is also a valid program but it print character upto 127

newprouser

yes, i was trying to print ASCII values, since its from 0-127, i initialized ch1 as 0., which seems to be the cause of the problem.

Luke Skywalker

Post the exception & error you get. They are your best teachers.

newprouser

well well it was for a reason u guys asked me not to use an ide in the beginning, coz the original program (with ch1=0) is working fine in CMD, but in IDE , no output was displayed (except process completed).

Luke Skywalker

Yes it will work. Don't use IDE now. Use cmd only.

nandini

it can't be.
post your code.

newprouser

I use Jcreator Pro IDE. v4.5

matrix

Simple suggestion. Can't this be written as follows:

public class chaz
{
public static void main (String[] args )
{
for (ch1=1;ch1<127; ch1++)
{
System.out.println(ch1);
}

}
}

This will be proper and clear way of coding as per the standard followed by many java developers.