Pls Help, NumberFormatException.

I have used below stmt in my code.None of the value is empty.I m using j2me toolkit 2.3.This code is giving NumberFormatException.

Hashtable appToRmsIdMap = new Hashtable();

int recordId;

int rmsRecordId = Integer.parseInt((String)appToRmsIdMap.get(String.valueOf(recordId)));

[301 byte] By [David_bourne5a] at [2007-10-3 4:46:00]