<%@ page import="java.io.*" %> 
<%@ page import="java.util.Collections" %> 
<%@ page import="java.util.Comparator" %> 
<%@ page import="java.util.ArrayList" %> 
<%@ page import="AlphanumComparator.*" %> 









Welcome to map/reduced Newsticker!

        What are the most used words today: 
        

        

        <%

        String file = "/tmp/output/part-00000";
        BufferedReader br = new BufferedReader(new FileReader( file));
        String zeile;
	ArrayList Stuff = new ArrayList();
	
 	AlphanumComparator ac = new AlphanumComparator();

        while ((zeile = br.readLine()) != null) {

	 String [] splitupText = zeile.split("\t");
         String a1 = splitupText[1] + " : " + splitupText[0];
	 Stuff.add(a1);
        }
			  Collections.sort(Stuff, ac);
			  Collections.reverse(Stuff);
    for(int j=0; j < Stuff.size(); j++) {
	out.println(Stuff.get(j));
        out.println("
");
   }

        %>




	How it works:


 We need Java JRE and JDK for Java Developement from  http://java.sun.com/javase/downloads/index.jsp
 We need Apache Tomcat from http://tomcat.apache.org/
 Unzip the software and start Apache Tomcat
/usr/local/apache-tomcat-6.0.26/bin/startup.sh 
(Listen default on port 8080)
Set JAVA_HOME in bin/catalina.sh if the system has no defaults

JAVA_HOME=/usr/local/jre1.6.0_18

 Additional Software is needed: GNU JavaMail and GNU JAF and GNU inetlib
 The first java app  is a NNTP Client (look at http://blog.jservlet.com/post/2007/06/29/first or download it). Configure news account and newsgroup name.
Compile the java to a class:

/usr/local/jdk1.6.0_18/bin/javac -cp gnumail.jar:gnumail-providers.jar NNTP.java

 Download and install Hadoop from http://hadoop.apache.org
 Compile the WordCount.java example from hadoop sources

/usr/local/jdk1.6.0_18/bin/javac  -cp hadoop-0.20.2-core.jar -d wordcount_classes WordCount.java


/usr/local/jdk1.6.0_18/bin/jar -cvf wordcount.jar -C wordcount_classes/ .

 Fetching all article bodies from the selected newsgroup:

cd /usr/local/cloudcomputing/mail-1.1.2/

/usr/local/jre1.6.0_18/bin/java NNTP gnu.mail.providers.nntp.NNTPStore > ../hadoop-0.20.2/input/001



 Starting hadoop in single mode or server or use AWS:


cd /usr/local/cloudcomputing/hadoop-0.20.2/

bin/hadoop jar wordcount.jar org.myorg.WordCount  input output

cp /usr/local/cloudcomputing/hadoop-0.20.2/output/part-00000 /usr/local/apache-tomcat-6.0.26/webapps/cloud/



 Download AlphanumComparator from here and install it in the class directory from your webapp
 Write