import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Intwritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.File0utputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
public class Wordcount {
	public static void main(string[] args)throws Exception {
		Configuration conf=new configuration();
		String[] otherArgs =new GenericOptionsParser(conf, args).getRemainingArgs();
	if(otherArgs.length<2){
		System.err.println("Usage: wordcount <in>[<in>...] <out>");
		System.exit(2);
	}
	Job job =Job.getInstance(conf, "word count");
	job.setJarByclass(Wordcount.class);
	job.setMapperclass(WordcountMapper.class);
	job.setReducerclass(WordcountReducer.class);
	job.setOutputKeyclass(Text.class);
	job.setoutputValueclass(IntWritable.class);
	for(int i e;i<otherArgs.length-1;++i){
		FileInputFormat.addInputPath(job, new Path(otherArgs[i]));
	}
	FileOutputFormat.setOutputPath(job, new Path(otherArgs[otherArgs.length - 1]));
	System.exit(job.waitForcompletion(true)?0:1);}
}