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Command Line Arguments

Posted on 2003-02-23
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Last Modified: 2010-03-31
here is my code.
What I am trying to do is check for command line arguements passed the program. Just wondered if I was going about it the right way.

I want to have the arguements
-t
-b
-s
and a no arguements method.

Also If I want to output my above Address to a text file do i need to attach a DataOutputSteam to it here or in my Main Address.java! I am new to I/O

Thanlks





import java.io.*;
import javabook.*;


class AddressMaker
{
   public static void main (String[] args)
   {

Address address = new Address( My House, A Road,
           The Town, UK, POST CODE);

   if (args.length > 0) // Check to see if a parameter is passed
    {
     for (int argNo = 0; argNo < args.length; argNo ++) // Look at parameters passed
     {
      if (args[argNo].startsWith("-t")
      {
      }
      else
        if (args[argNo].startsWith("-b")
        {
        }
        else
          if (args[argNo].startsWith("-s")
          {
          }
          else // If no argument passed
          {
         System.out.println(":"+ address.toString());
          }
   }
}
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Question by:welsh_boy
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1 Comment
 
LVL 5

Accepted Solution

by:
vemul earned 240 total points
ID: 8003074
yes, this looks fine. About writing to a file, u can put it in this class itself as it looks like your Address class is used basically to store/manipulate values with its variables

PrintWriter printWriter1;
     try
         {
              printWriter1   = new PrintWriter(new BufferedWriter(new FileWriter(outFile1)));
              printWriter1.flush();
              printWriter1.println(address);
              printWriter1.close();
         }
         catch(Exception e)
         {
              e.printStackTrace();
         }


also do note that when u write address as an object into the file, you may want to define your own toString() method in your address class to make it readable in your txt file or you can store the names, city etc by saying
              printWriter1.println(address.getName());
              printWriter1.println(address.getPostCode());

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