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Old 11-09-2004, 11:23 PM   #1
zeviddalop
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java - how do you input from the command line


i'm kinda perplexed, i've got a project for school where we're supposed to write a driver to allow piped input/output : for ex, driver < inputFile1 > outputFile but for a variety of input files. i can't figure out how to code this without specifically including the input file in the driver. can anyone help?
 
Old 11-10-2004, 12:02 AM   #2
zeviddalop
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no worries, got it figured out.
 
Old 11-10-2004, 06:26 AM   #3
rjlee
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The answer to the question is to use the System.in and System.out streams.

Please post the answers to your questions if you find out what they are; that way other people can benefit from your insight.

Well done on fixing it, though
 
Old 11-10-2004, 07:29 AM   #4
ta0kira
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I think zeviddalop meant take arguments when calling 'java' to exec the program. If that is the case, it is almost like C++:

class App
{
public static void main(String[] args)
{
//all command line arguments are stored in 'args'; just use it like a normal array
//(the exec name isn't given in [0], unlike C++)
}
}
 
Old 11-10-2004, 11:59 AM   #5
eantoranz
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If i were to read by lines, I would do:
Code:
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
keyboard.readLine();
 
  


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