使用ical4j将事件显示为“免费”

import net.fortuna.ical4j.data.CalendarBuilder;
import net.fortuna.ical4j.data.CalendarOutputter;
import net.fortuna.ical4j.data.ParserException;
import net.fortuna.ical4j.model.Calendar;
import net.fortuna.ical4j.model.DateTime;
import net.fortuna.ical4j.model.component.VEvent;
import net.fortuna.ical4j.model.property.Status;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class ICal4jExample {
    public static void main(String[] args) {
        try {
            // 创建日历对象
            Calendar calendar = new Calendar();

            // 创建事件对象
            VEvent event = new VEvent(new DateTime(), new DateTime(), "Event Name");

            // 设置事件为“免费”
            event.getProperties().getProperty("STATUS").setValue(Status.VEVENT_CONFIRMED);

            // 将事件添加到日历
            calendar.getComponents().add(event);

            // 生成iCalendar文件
            CalendarOutputter outputter = new CalendarOutputter();
            outputter.output(calendar, new FileOutputStream("event.ics"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}