Number of people died or survived in each class their genders and their ages in tatnic

import java.io.IOException;

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.conf.*;
import org.apache.hadoop.io.*;
import org.apache.hadoop.mapreduce.*;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
           
   public class Female_survived {
           
    public static class Map extends Mapper<LongWritable, Text, Text, IntWritable> {
       
       private Text people = new Text();
       private final static IntWritable one = new IntWritable(1);    
       public void map(LongWritable key, Text value, Context context ) throws IOException, InterruptedException {
           String line = value.toString();
           String str[]=line.split(",");
            if(str.length>6){
                String survived=str[1]+" "+str[4]+" "+str[5];
                people.set(survived);
              context.write(people, one);
           
     }
      }       
               
    } 
           
    public static class Reduce extends Reducer<Text,IntWritable, Text, IntWritable> {
   
       public void reduce(Text key, Iterable<IntWritable> values, Context context) 
         throws IOException, InterruptedException {
           int sum = 0;
           for (IntWritable val : values) {
               
               sum += val.get();
           }
           context.write(key, new IntWritable(sum));
       }
    }
           
    public static void main(String[] args) throws Exception {
       Configuration conf = new Configuration();
           
           @SuppressWarnings("deprecation")
        Job job = new Job(conf, "females_survived");
           job.setJarByClass(Female_survived.class);
       
           job.setMapOutputKeyClass(Text.class);
           job.setMapOutputValueClass(IntWritable.class);
          // job.setNumReduceTasks(0);
       job.setOutputKeyClass(Text.class);
       job.setOutputValueClass(IntWritable.class);
           
       job.setMapperClass(Map.class);
       job.setReducerClass(Reduce.class);
           
       job.setInputFormatClass(TextInputFormat.class);
       job.setOutputFormatClass(TextOutputFormat.class);
           
       FileInputFormat.addInputPath(job, new Path(args[0]));
       FileOutputFormat.setOutputPath(job, new Path(args[1]));
        Path out=new Path(args[1]);
        out.getFileSystem(conf).delete(out);
       job.waitForCompletion(true);
    }
           
  }