/* InOut.java */
import java.io.*;

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

      if(args.length != 2){
         System.out.println("error:usage IoOut infile outfile");
         System.exit(1);
      }
      try{
         BufferedReader in = new BufferedReader(
                          new FileReader(args[0]));
         PrintWriter out = new PrintWriter(
             new BufferedWriter(
                   new FileWriter(args[1])));

         String line;
         while( (line = in.readLine()) != null){
            //do something with input 
            //below is some method of String Object
            //matches(String regex) 
            //replaceFirst(String regex, String replacement) 
            //replaceAll(String regex, String replacement) 

            //output
            out.println(line);
         }
         in.close();
         out.close();
      }
      catch(Exception ex){
         ex.printStackTrace();
      }
   }
}

/* InOut.java */
import java.io.*;

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

      if(args.length != 2){
         System.out.println("error:usage IoOut infile outfile");
         System.exit(1);
      }
      try{
         BufferedReader in = new BufferedReader(
                          new FileReader(args[0]));
         PrintWriter out = new PrintWriter(
             new BufferedWriter(
                   new FileWriter(args[1])));

         String line;
         while( (line = in.readLine()) != null){
            //do something with input 
            //below is some method of String Object
            //matches(String regex) 
            //replaceFirst(String regex, String replacement) 
            //replaceAll(String regex, String replacement) 

            //output
            out.println(line);
         }
         in.close();
         out.close();
      }
      catch(Exception ex){
         ex.printStackTrace();
      }
   }
}

/* InOut.java */
import java.io.*;

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

      if(args.length != 2){
         System.out.println("error:usage IoOut infile outfile");
         System.exit(1);
      }
      try{
         BufferedReader in = new BufferedReader(
                          new FileReader(args[0]));
         PrintWriter out = new PrintWriter(
             new BufferedWriter(
                   new FileWriter(args[1])));

         String line;
         while( (line = in.readLine()) != null){
            //do something with input 
            //below is some method of String Object
            //matches(String regex) 
            //replaceFirst(String regex, String replacement) 
            //replaceAll(String regex, String replacement) 

            //output
            out.println(line);
         }
         in.close();
         out.close();
      }
      catch(Exception ex){
         ex.printStackTrace();
      }
   }
}