Re: Command-line arg

joe wrote:
I was wondering if there is a way to check if there is a command line
argument (arg[0]) and not throw indexouofboundsException

Thanks


If your main method is declared:

public static void main ( String [] arg )
{
...
}

Then "arg" is an array (of Strings) object. All array
objects support a ".length" property (really a final int field)
that contains the number of elements in the array. So you can
write code similar to the following to avoid that exception:

...
if ( arg.length > 0 ) {
... // do something with arg[0]
}

or:
...
if ( arg.length == 0 ) {
// do error handling here
return;
}
.

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