recommend-feature/recommend-feature-produce/src/main/java/feature/produce/util/DateUtils.java

package feature.produce.util;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * @author dyp
 */
public final class DateUtils {
    public static String getCurrentDateStr(String format) {
        SimpleDateFormat dateFormat = new SimpleDateFormat(format);
        Date currentDate = new Date();
        return dateFormat.format(currentDate);
    }

    public static int getCurrentHour() {
        Calendar calendar = Calendar.getInstance();
        return calendar.get(Calendar.HOUR_OF_DAY);
    }

    public static String getBeforeDaysDateStr(String format, int d) {
        SimpleDateFormat dateFormat = new SimpleDateFormat(format);
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(new Date());
        calendar.add(Calendar.DAY_OF_MONTH, -d);
        Date previousDate = calendar.getTime();
        return dateFormat.format(previousDate);
    }
}