Java/MySQL - Insert Unicode Character into Database

I am having an issue inserting Unicode character into database. The function I have here

public void insertCleanText(String text, String page_id, String text_id) {
    // System.out.println("inserting in cleanText: ");
    byte cleanText[] = null;

    try {
        cleanText = text.getBytes("UTF8");
    } catch (Exception e) { // UnsupportedEncodedException
        e.printStackTrace();
    }

    try {
        // ps = cn.prepareStatement("INSERT INTO cleanText VALUES (null, ?, ?, ?, ?)");
        if (cleanText != null) {
            psCleanText.setBytes(1, cleanText);
            psCleanText.setBoolean(2, false); // it will be true after processed by the FeatureMaker
            psCleanText.setInt(3, Integer.parseInt(page_id));
            psCleanText.setInt(4, Integer.parseInt(text_id));
            psCleanText.execute();
            psCleanText.clearParameters();
        } else
            System.out.println("WARNING: can not insert in " + cleanTextTableName + ": " + text);

    } catch (SQLException e) {
        e.printStackTrace();
    }
}

For example, I want to insert the String "Thực tế" but when I select it in MySQL, it show something like "Th?c t?".

Anybody has an idea to fix this?