/*
 * Compare two files.
 *
 * To use this program, specify the names
 * of the files to be compared on the command line.
 *
 * java CompFile FIRST.TXT SECOND.TXT
 */

package m3uf3bytestreams;

import java.io.*;

public class CompFiles {

    public static void main(String[] args) {
        int i=0, j=0;

        // First make sure that both files have been specified.
        if(args.length !=2) {
            System.out.println("Usage: CompFiles f1 f2");
            return;
        }

        // Compare the files.
        try (FileInputStream f1 = new FileInputStream(args[0]);
             FileInputStream f2 = new FileInputStream(args[1]))
        {
            // Check the contents of each file.
            do {
                i = f1.read();
                j = f2.read();
                if(i != j) break;
            } while(i != -1 && j != -1);

            if(i != j)
                System.out.println("Files differ.");
            else
                System.out.println("Files are the same.");
        } catch(IOException exc) {
            System.out.println("I/O Error: " + exc);
        }
    }
}