import java.io.*;

/**
  *    This program will read a sequential file ("javaapp.dat") which
  *    was created by WriteFile.java
  *    @author Ron Zucker;  modified slightly by Bob Roggio
  */


public class ReadFile
{

	/**
          *   This is an application that reads data from a sequential file
          *   and outputs the data to the screen
          *   @param  String containing name of file to be read
          */
        
	public static void main(String[] args) throws IOException
        {
           String outString;
           BufferedReader input;
           DataOutputStream output;

           /*
              this code assigns the file javaapp.dat to a datastream
              which is roughly equivalent to an open...
           */
           input= new BufferedReader(new FileReader("javaapp.dat"));

           /*
            this is the loop to continue until an eof is found
            note: that this is the equivalent of a priming and a loop read
                  The file is read and the data read is placed in outstring
                  As long as outstring is not null the loop will continue!
           */
           while ((outString=getData(input))!=null)
           {
                System.out.println("value read was:"+ outString);
           }

           //   close the input file...
           input.close();

           System.out.println("all done");
        }// end main()



        /**
          *  This function receives data from a sequential file
          *  @return a string containing the data read from the file
          *  @param  infile BufferedReader with the name of file to be read
          */
        public static String getData(BufferedReader infile) throws IOException
        {
           String readdata;
           try
           {
              readdata=infile.readLine();
           }
           catch (EOFException e)
           {
              System.out.println("end of file" +e.toString());
              readdata=String.valueOf("");
           }
           return readdata;
        } // end getData ()

        
} // end class ReadFile