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Mapreduce wordcount java implementation of what is, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Use java to simulate word frequency statistics.

There are three files: text1: hello world

Text2:hello hadoop

Text3:hello mapreduce

Count the word frequency of the above files: the result should be: hello:3; hadoop:1; world:1; mapreduce:1

The code is implemented as follows:

Package count;import java.util.Hashtable;import java.util.Iterator;import java.util.StringTokenizer;public class Count {public static void main (String [] args) {String [] text = new String [] {"hello world", "hello hadoop", "hello mapreduce"}; Hashtable ht = new Hashtable (); for (int iTuno; I

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