Campbell Ritchie wrote:Who wrote a class with four type parameters?
Don't know. But I think it is this class from hadoop:
Mapper you can found this class' history
here ;).
But if this is the class OP meant then this declaration:
will result in a compile error.
You can't
implement a class. Interface only.
Aftab, is full name of your
Mapper class
org.apache.hadoop.mapreduce.Mapper?