juick-core/src/main/java/com/juick/util/DateFormatter.java


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package com.juick.util;

import org.apache.commons.lang3.StringUtils;

import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.util.Date;

/**
 * Created by aalexeev on 12/7/16.
 */
public class DateFormatter {
    private final DateTimeFormatter formatter;

    public DateFormatter(String pattern) {
        formatter = DateTimeFormatter.ofPattern(pattern);
    }

    public String format(final Date date) {
        if (date == null)
            return null;

        LocalDateTime ldt = LocalDateTime.ofInstant(date.toInstant(), ZoneOffset.UTC);

        return ldt.format(formatter);
    }


    public Date parse(final String v) {
        if (StringUtils.isBlank(v))
            return null;

        LocalDateTime ldt = LocalDateTime.parse(v, formatter);

        return Date.from(ldt.toInstant(ZoneOffset.UTC));
    }
}