content: /*
   *  Copyright (C) 2019 Alpha Jiang. All rights reserved.
   *
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   */
  
  package io.github.alphajiang.hyena.utils;
  
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.Calendar;
  
  public class DateUtils {
  
      public static String toYyyyMmDdHhMmSs(Calendar cal) {
          return DateUtils.toStringFormat(cal, "yyyy-MM-dd HH:mm:ss");
      }
  
      public static String toStringFormat(Calendar cal, String pattern) {
          if (cal == null) {
              return "";
          }
          SimpleDateFormat sdf = new SimpleDateFormat(pattern);
          return sdf.format(cal.getTime());
      }
  
  
      public static Calendar fromYyyyMmDdHhMmSs(String str) throws ParseException {
          return DateUtils.fromStringFormat(str, "yyyy-MM-dd HH:mm:ss");
      }
  
      public static Calendar fromStringFormat(String str, String pattern) throws ParseException {
  
          SimpleDateFormat sdf = new SimpleDateFormat(pattern);
          Calendar cal = Calendar.getInstance();
          cal.setTime(sdf.parse(str));
          return cal;
  
      }
  }
  