com.shenit.commons.utils.Formatter.java Source code

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Here is the source code for com.shenit.commons.utils.Formatter.java

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/***********************************************************************************************************************
 * 
 * Copyright (C) 2013, 2014 by huanju (http://www.yy.com)
 * http://www.yy.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.shenit.commons.utils;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * ???.
 * @author jiangnan
 *
 */
public final class Formatter {
    private static final Logger LOG = LoggerFactory.getLogger(Formatter.class);

    public static final DateFormat DATETIME_FORMATTER = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    public static final DateFormat DATE1_FORMATTER = new SimpleDateFormat("yyyy-MM-dd");
    public static final DateFormat DATE2_FORMATTER = new SimpleDateFormat("yyyy/MM/dd");

    /**
     * ?
     * @param num 
     * @param scale ????
     * @return
     */
    public static String formatPrice(double num) {
        return new BigDecimal(num).setScale(2, RoundingMode.CEILING).toPlainString();
    }

    /**
     * Parse string to date using full datetime
     * @param notifyDateStr
     * @return
     */
    public static Date parseDate(String notifyDateStr) {
        return parseDate(notifyDateStr, null);
    }

    /**
     * @param notifyDateStr
     * @return
     */
    public static Date parseDate(String notifyDateStr, DateFormat formatter) {
        if (StringUtils.isEmpty(notifyDateStr))
            return null;
        try {
            return (formatter == null ? DATETIME_FORMATTER : formatter).parse(notifyDateStr);
        } catch (ParseException e) {
            LOG.warn("[parseDate] illegal date string: {}", notifyDateStr);
        }
        return null;
    }

}