// load Java's I/O facilities:
import java.io.*;

public class FileIO {
    
    // $main$ must "throw" an exception if input is illegal:
    public static void main(String[] args) throws IOException {

	// create object $in$ that allows you to prompt user for input:
	   BufferedReader in = new BufferedReader
	       (new InputStreamReader(System.in)); 
	
	// read strings:
 	   System.out.print("Enter file name to read: ");
	   String inFileName  = in.readLine();
	   System.out.print("Enter file name for output: ");
	   String outFileName = in.readLine();

	// ensure that the input file exists:
  	   while (!new File(inFileName).exists()) {
	      System.out.println("No such file !");
	      System.out.print("Enter file name to read: ");
	      inFileName  = in.readLine();
	   }	

	// generate an input stream to read from the file:
	   BufferedReader inFile = new BufferedReader
	       (new FileReader(inFileName));

	// generate: an output stream to write to the output file:
	   PrintWriter outFile=new PrintWriter
	       (new FileWriter(new File(outFileName)));
	   
	// read strings from input file and write to output file:
	   String s = inFile.readLine();
	   while (s != null) {
	       System.out.println("Here is the string I read: "+s);
	       outFile.println("Recording the string I read: "+s);
	       s = inFile.readLine(); // get next string
	   }

	// close files when finished:
	   inFile.close();
	   outFile.close();
    }
}