How to set upperbound key to a max value ?

Hello,
I use TreeMap.subMap() method as below:
entrySet = iCumTotalsTree.subMap(iCumTotalsKey,iCumTotalsUpperKey).entrySet();
The class of the key parameters of this subMap is as below:
class:
{ int lineNumber
int dep
I want to get a sub map. So that the "dep" field of higher bound has always to be greater than or equal to "dep" field of lower bound.
is it possible to return this sub map without identifying a value for the "dep" value of higher bound. I mean can I derive it from the "dep" value of lower bound ?
thanks in advance...
I need that dep field of second key should

Hi,
Thanks for the reply.
I mean
Lower bound should be:
(<x1>,<y1>)
Upper bound should be:
(<x2>,<y2>)
I can not pass a value to <y2>. But, I'm sure it's always greater than, or equal to <y1>. So, I need to derive <y2> from <y1>.
I can use max value of integer for <y2>. But, is there a better way ? For example, does <y1+"\0"> work ?
thanks in advance...

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Edited by: Leong Pui Kee on Feb 25, 2011 5:25 AM
Edited by: Leong Pui Kee on Feb 25, 2011 5:36 AM

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