/* ConsoleInput.java        Authors: Koffman & Wolz
 * Demonstrates reading data from the console.
 * Uses InputStreamReader, BufferedReader,
 * FileWriter, and PrintWriter.
 */
import java.io.*;

public class ConsoleInput {

   public static void main(String[] args) {
 
      try {
        // Create object ins and connect it to the console
        InputStreamReader inStream = new InputStreamReader(System.in);
        BufferedReader ins = new BufferedReader(inStream);
        
        // Read name of output file
        System.out.print("Enter output file name: ");
        String outFileName = ins.readLine();

        // Create object outs - the output file
        FileWriter outStream = new FileWriter(outFileName);
        PrintWriter outs = new PrintWriter(outStream);

        // Get the number of data lines.
        System.out.println("How many data lines?");
        int numLines = Integer.parseInt(ins.readLine());

        // Read the data lines from the console
        //   and write them to the output file
        System.out.println("Type " + numLines + " lines:");
        for (int lineCount = 0; lineCount < numLines; lineCount++)  {
           String dataLine = ins.readLine();
           outs.println(dataLine);
        }

        // Write message to console and close files.
        System.out.println(numLines + " data lines written to file " +
                           outFileName);
        ins.close();
        outs.close();
      }
      catch (IOException ex) {
        System.err.println("i/o error" + ex.getMessage());
        ex.printStackTrace();
      }
      catch (NumberFormatException ex) {
        System.err.println(ex.getMessage());
        ex.printStackTrace();
      }
   }
}