Java JSAPI:Central.CreateRecognitizer返回null

我是语音识别方面的新手

所以我想运行这样的代码： （原始链接：）

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照这个做就行了。Sphinx4不再实现Java语音API。

此外，我不想使用ANT。不知何故，Sphinx示例（HelloWorld.jar）运行良好。这能证明我有一个语音引擎吗？

public class HelloWorld extends ResultAdapter {
    static Recognizer rec;

    // Receives RESULT_ACCEPTED event: print it, clean up, exit
    public void resultAccepted(ResultEvent e) {
        Result r = (Result)(e.getSource());
        ResultToken tokens[] = r.getBestTokens();

        for (int i = 0; i < tokens.length; i++)
            System.out.print(tokens[i].getSpokenText() + " ");
        System.out.println();

        // Deallocate the recognizer and exit
        rec.deallocate();
        System.exit(0);
    }

    public static void main(String args[]) {
        try {
            // Create a recognizer that supports English.
            rec = Central.createRecognizer(
                            new EngineModeDesc(Locale.ENGLISH));

            // Start up the recognizer
            rec.allocate();

            // Load the grammar from a file, and enable it
            FileReader reader = new FileReader(args[0]);
            RuleGrammar gram = rec.loadJSGF(reader);
            gram.setEnabled(true);

            // Add the listener to get results
            rec.addResultListener(new HelloWorld());

            // Commit the grammar
            rec.commitChanges();

            // Request focus and start listening
            rec.requestFocus();
            rec.resume();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

grammar javax.speech.demo;

public <sentence> = hello world | good morning | 
                                      hello mighty computer;