How to avoid OutOfMemoryError

In my information retrieval project, I have to build a vector space model. So there are three arrays, i.e. a string array IndexTerm, a string array FileName[j], and a double array weight[j]. The total number of the files is about ten thousand, while the number of index terms might be twenty thousand. This causes a serious problem, i.e. java.lang.OutOfMemoryError

Could anybody tell me how to avoid this without reducing the number of files and index terms?

[485 byte] By [Wenxiaoa] at [2007-10-2 10:24:40]