java获取当前日期所在周的周六、周日日期

/**
 * 获取当前日期所在周的周六日期
 * @return String 格式 yyyy-MM-dd
 */
public static String getSaturdayDate() {
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
    Calendar cal = Calendar.getInstance();
    if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY ){
        cal.set(Calendar.DATE,cal.get(Calendar.DATE)-1 );// 设置时间为前一天
        return simpleDateFormat.format(cal.getTime());
    }
    cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
    cal.set(Calendar.DATE, cal.get(Calendar.DATE) + 5);
    return simpleDateFormat.format(cal.getTime());
}

/**
 * 获取当前日期所在周的周日日期
 * @return String 格式 yyyy-MM-dd
 */
public static String getWeekLastDate() {
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
    Calendar cal = Calendar.getInstance();
    if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY ){
        return simpleDateFormat.format(cal.getTime());
    }
    cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
    cal.set(Calendar.DATE, cal.get(Calendar.DATE) + 6);
    return simpleDateFormat.format(cal.getTime());
}

public static void main(String[] args) {
    System.out.println(getSaturdayDate());
    System.out.println(getWeekLastDate());
}