Why the Range not find the data

[Lu Qin]

In my accumulo cluster ,the table has this data:
0 cf0:cq0 []    v0
1 cf1:cq1 []    v1

then I use scan to find it like this:
ranges.add(new Range(new Key(new Text("0"), new Text("cf0")), true,
                     new Key(new Text("0"), new Text("cf0")), true));
but it tell me #results=0.

 If i code like this:
ranges.add(new Range(new Key(new Text("0"), new Text("cf0")), true,
                     new Key(new Text("0"), new Text("cf00")), true));
it works OK.


api show me if I set true ,it will include the start and end key.Why I can not 
find the data ?

Thanks.