com.hula.lang.util.DateUtil.java Source code

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Here is the source code for com.hula.lang.util.DateUtil.java

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/**
 * Copyright 2013 Simon Curd <simoncurd@gmail.com>
 * 
 * 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 com.hula.lang.util;

import java.util.Date;
import java.util.TimeZone;

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

/**
 * A utility class with helper methods for working with Dates.
 */
public class DateUtil {

    public static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
    static {
        DateTimeZone.setDefault(DateTimeZone.UTC);
        TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
    }

    /**
     * Convert a Date into a String
     * 
     * @param date The date to convert
     * @param format The format of the Date
     * @return A string containing the datre
     */
    public static String toString(Date date, String format) {
        DateTimeFormatter fmt = DateTimeFormat.forPattern(format);
        return fmt.print(date.getTime());
    }

    /**
     * Convert a String into a Date
     * 
     * @param string The string to convert
     * @param format The format of the String
     * @return A Date
     */
    public static Date toDate(String string, String format) {
        DateTimeFormatter fmt = DateTimeFormat.forPattern(format);
        DateTime dt = fmt.parseDateTime(string);
        return dt.toDate();
    }

}