请在下面程序的下划线中补充完整程序（共8处）。public class WordCount {publicstatic class TokenizerMapper extendsMapper {private final static IntWritable one = newIntWritable(1);private Text word = new Text();public void map(LongWritable key, Text value,Context context){StringTokenizeritr = new StringTokenizer(value.toString());while (itr.hasMoreTokens()) {word.set(itr.nextToken());context.write(word, one);}}}public static class IntSumReducer extendsReducer {private IntWritable result = newIntWritable();public void reduce(Texykey, Iterable values, Context context) {int sum = 0;for (IntWritable val : values) {sum += val.get();}result.set(sum);context.write(key, result);}}public static void main(String[] args) throws Exception {略……}}