Ask about problem of OpenNLP tool lib

[Dinh Tu Vu]

Dear Everybody

I'm a Vietnamese. This time, I'm researching tool of OpenNLP to process
Vietnamese language. I found some example code on this link
http://incubator.apache.org/opennlp/documentation/manual/opennlp.html.
But, when I parsed to get the grammar structure of the sentence, the
application show the notice as: Exception in thread "main"
java.lang.OutOfMemoryError: Java heap space
My code is very simple as follows:
=================================================================
        InputStream modelInParser =
            new FileInputStream(HOME_DIR +
"resources/model/en-parser-chunking.bin");
        try {
            ParserModel modelParser = new ParserModel(modelInParser);

            Parser parser = ParserFactory.create(modelParser);

//            String sentenceTest =
//                "The quick brown fox jumps over the lazy dog .";
            Parse topParses[] = ParserTool.parseLine(this.sentence, parser,
1);
            System.out.println("******Ket thuc******");
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (modelInParser != null) {
                try {
                    modelInParser.close();
                } catch (IOException e) {
                }
            }
        }

================================================================
Is there any idea to resovle this problem?

Thanks and best regards