Java Reference
In-Depth Information
in cases in which the controlling data is already in string form. In other words, don't use
strings in a
switch
unnecessarily.
Using Command-Line Arguments
Now that you know about the
String
class, you can understand the
args
parameter to
main( )
that has been in every program shown so far. Many programs accept what are
called
command-line arguments
. A command-line argument is the information that direc-
tly follows the program's name on the command line when it is executed. To access the
command-line arguments inside a Java program is quite easy—they are stored as strings in
the
String
array passed to
main( )
. For example, the following program displays all of the
command-line arguments that it is called with:
If
CLDemo
is executed like this,
you will see the following output:
