CopyInt8.java

// CopyInt8.java -- read comma separated ints from the standard input stream

import java.util.Scanner;

/*
 *  System.in  (java.io.InputStream) is the standard input
 *  System.out (java.io.PrintStream) is the standard output
 */

/*
 *  Note the try-resource statement for closing the stream.  Also
 *  note the use of regular expressions.
 */

/*
 *  Note the example of OO method chaining (from SmallTalk, as are many OO
 *  idoms).  Since it only makes sense for mutable objects, it is not
 *  something to emulate.
 */

public final class CopyInt8 {

   public static void main (final String[] args) {

      try (final Scanner stdin =
            new Scanner(System.in, "US-ASCII").useDelimiter("[\\s,]+")) {

         // Read from the standard input stream
         while (stdin.hasNextInt()) {
            final int n = stdin.nextInt(); // get the next int from input
            System.out.println(n);         // write the int to output
         }
      }
   }
}