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Test Stdin Java code example - Click here to copy ->>>

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package com.ronsoft.books.nio.channels;

import java.nio.ByteBuffer;
import java.nio.channels.Selector;
import java.nio.channels.SelectionKey;
import java.nio.channels.SelectableChannel;
import java.nio.channels.ReadableByteChannel;
import java.util.Iterator;

public class TestStdin
   public static void main (String [] argv)
      throws Exception
      Selector selector = Selector.open();
      SystemInPipe stdinPipe = new SystemInPipe();
      SelectableChannel stdin = stdinPipe.getStdinChannel();
      ByteBuffer buffer = ByteBuffer.allocate (32);

      stdin.register (selector, SelectionKey.OP_READ);

      System.out.println ("Entering select(), type something:");

      while (true) {
         selector.select (2000);

         Iterator it = selector.selectedKeys().iterator();

         if ( ! it.hasNext()) {
            System.out.println ("I'm waiting");

         SelectionKey key = (SelectionKey) it.next();


         ReadableByteChannel channel =
            (ReadableByteChannel) key.channel();
         int count = channel.read (buffer);

         if (count < 0) {
            System.out.println ("EOF, bye");



         System.out.println ("Hey, read " + count + " chars:");

         while (buffer.hasRemaining()) {
            System.out.print ((char) buffer.get());




The list of classes which were used on this page you can find below. The links to Java API contain official SUN documentation about all used classes.








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