如何在Vaadin8中设置DateField以根据用户的时区突出显示默认日期

DateField dateField = new DateField("选择日期");
add(dateField);

int timezoneOffset = UI.getCurrent().getSession().getBrowser().getTimezoneOffset();

Calendar calendar = Calendar.getInstance();

calendar.add(Calendar.MINUTE, timezoneOffset);

dateField.setValue(calendar.getTime());

import com.vaadin.ui.DateField;
import com.vaadin.ui.UI;

import java.util.Calendar;

public class MyUI extends UI {

    @Override
    protected void init(VaadinRequest vaadinRequest) {
        DateField dateField = new DateField("选择日期");

        int timezoneOffset = UI.getCurrent().getSession().getBrowser().getTimezoneOffset();
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MINUTE, timezoneOffset);
        dateField.setValue(calendar.getTime());

        setContent(dateField);
    }
}