hadoop writable

类型

BooleanWritable、IntWritable、Text等

#方法

public class VIntWritable implements WritableComparable {
   private int value;
   ……
   // 设置VIntWritable的值
   public void set(int value) { this.value = value; }

   // 获取VIntWritable的值
   public int get() { return value; }

   public void readFields(DataInput in) throws IOException {
      value = WritableUtils.readVInt(in);
   }

   public void write(DataOutput out) throws IOException {
      WritableUtils.writeVInt(out, value);
   }
   ……
}