import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.Job;
public class WordCountDriver {
public static void main(String[] args) throws Exception {
if (args.length != 2) {
System.out.printf("Usage : WordCountDriver <inputdir> <outputdir>\n");
System.exit(-1);
}
Job job = new Job();
job.setJarByClass(WordCountDriver.class);
job.setJobName("Word Count");
FileInputFormat.setInputPaths(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
job.setMapperClass(WordCountMapper.class);
job.setReducerClass(WordCountReducer.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(IntWritable.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(IntWritable.class);
boolean success = job.waitForCompletion(true);
System.exit(success ? 0 : 1);
}
}

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.Job;
public class WordCountDriver {
public static void main(String[] args) throws Exception {
if (args.length != 2) {
System.out.printf("Format de la ligne de commande : WordCount <input dir> <outputdir>\n");
System.exit(-1);
}
Job job = new Job();
job.setJarByClass(WordCountDriver.class);
job.setJobName("Word Count");
FileInputFormat.setInputPaths(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
job.setMapperClass(WordCountMapper.class);
job.setReducerClass(WordCountReducer.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(IntWritable.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(IntWritable.class);
boolean success = job.waitForCompletion(true);
System.exit(success ? 0 : 1);
}
}

--- 
+++ 
@@ -7,7 +7,7 @@
 public class WordCountDriver {
 public static void main(String[] args) throws Exception {
 if (args.length != 2) {
-System.out.printf("Format de la ligne de commande : WordCount <input dir> <outputdir>\n");
+System.out.printf("Usage : WordCountDriver <inputdir> <outputdir>\n");
 System.exit(-1);
 }
 Job job = new Job();
Change the usage sentence to be EN