Java Date Parse asDate(String param, SimpleDateFormat format)

Description

as Date

License

Apache License

Declaration

private static Date asDate(String param, SimpleDateFormat format) 

Method Source Code

//package com.java2s;
/*/* ww w .j  a  v a  2s  . c o m*/
 * 
 * Copyright 2016 Celyo
 *
 * 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.
 * 
 */

import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Date;

public class Main {
    private static final SimpleDateFormat defaultDateFormat = new SimpleDateFormat("yyyy-MM-dd");

    public static Date asDate(String param) {
        return asDate(param, defaultDateFormat);
    }

    public static Date asDate(String param, String pattern) {
        return asDate(param, new SimpleDateFormat(pattern));
    }

    private static Date asDate(String param, SimpleDateFormat format) {
        if (param == null) {
            return null;
        }

        if (param instanceof String) {
            try {
                return format.parse(param);
            } catch (ParseException e) {
                throw new IllegalArgumentException(
                        "Invalid date format. Expected format is: " + format.toPattern() + ".");
            }
        } else {
            throw new IllegalArgumentException("Invalid agrument type. Convertion can be made only from String.");
        }
    }
}

Related

1. asDate(Date date, String format)
2. asDate(final long time)
3. asDate(final Map map, final String key)
4. asDate(final String literal)
5. asDate(String date)
6. asDate(String s)
7. asDate(String string)
8. asDate(String value, String format)
9. convertDateForExcel(String timestamp)