jdbc-mysql基礎 util.date 和 sql.date 的toString方法是不同的

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                             javaSE：8
                                    os：windows7 x64
                                   ide：MyEclipse 2017

代碼

package com.jizuiku.jdbc;/** *  *  * @author 給最苦 * @version V17.11.08 */public class UtilDateToSqlDate {public static void main(String[] args) {java.util.Date uDate = new java.util.Date();System.out.println(uDate);// 進行轉換java.sql.Date sDate = new java.sql.Date(uDate.getTime());System.out.println(sDate);}}

 

效果

 

 

util.date的toString方法的原始碼

    /**     * Converts this <code>Date</code> object to a <code>String</code>     * of the form:     * <blockquote><pre>     * dow mon dd hh:mm:ss zzz yyyy</pre></blockquote>     * where:<ul>     * <li><tt>dow</tt> is the day of the week (<tt>Sun, Mon, Tue, Wed,     *     Thu, Fri, Sat</tt>).     * <li><tt>mon</tt> is the month (<tt>Jan, Feb, Mar, Apr, May, Jun,     *     Jul, Aug, Sep, Oct, Nov, Dec</tt>).     * <li><tt>dd</tt> is the day of the month (<tt>01</tt> through     *     <tt>31</tt>), as two decimal digits.     * <li><tt>hh</tt> is the hour of the day (<tt>00</tt> through     *     <tt>23</tt>), as two decimal digits.     * <li><tt>mm</tt> is the minute within the hour (<tt>00</tt> through     *     <tt>59</tt>), as two decimal digits.     * <li><tt>ss</tt> is the second within the minute (<tt>00</tt> through     *     <tt>61</tt>, as two decimal digits.     * <li><tt>zzz</tt> is the time zone (and may reflect daylight saving     *     time). Standard time zone abbreviations include those     *     recognized by the method <tt>parse</tt>. If time zone     *     information is not available, then <tt>zzz</tt> is empty -     *     that is, it consists of no characters at all.     * <li><tt>yyyy</tt> is the year, as four decimal digits.     * </ul>     *     * @return  a string representation of this date.     * @see     java.util.Date#toLocaleString()     * @see     java.util.Date#toGMTString()     */    public String toString() {        // "EEE MMM dd HH:mm:ss zzz yyyy";        BaseCalendar.Date date = normalize();        StringBuilder sb = new StringBuilder(28);        int index = date.getDayOfWeek();        if (index == BaseCalendar.SUNDAY) {            index = 8;        }        convertToAbbr(sb, wtb[index]).append(‘ ‘);                        // EEE        convertToAbbr(sb, wtb[date.getMonth() - 1 + 2 + 7]).append(‘ ‘);  // MMM        CalendarUtils.sprintf0d(sb, date.getDayOfMonth(), 2).append(‘ ‘); // dd        CalendarUtils.sprintf0d(sb, date.getHours(), 2).append(‘:‘);   // HH        CalendarUtils.sprintf0d(sb, date.getMinutes(), 2).append(‘:‘); // mm        CalendarUtils.sprintf0d(sb, date.getSeconds(), 2).append(‘ ‘); // ss        TimeZone zi = date.getZone();        if (zi != null) {            sb.append(zi.getDisplayName(date.isDaylightTime(), TimeZone.SHORT, Locale.US)); // zzz        } else {            sb.append("GMT");        }        sb.append(‘ ‘).append(date.getYear());  // yyyy        return sb.toString();    }

 

 

sql.date toString方法的原始碼

    /**     * Formats a date in the date escape format yyyy-mm-dd.     * <P>     * @return a String in yyyy-mm-dd format     */    @SuppressWarnings("deprecation")    public String toString () {        int year = super.getYear() + 1900;        int month = super.getMonth() + 1;        int day = super.getDate();        char buf[] = "2000-00-00".toCharArray();        buf[0] = Character.forDigit(year/1000,10);        buf[1] = Character.forDigit((year/100)%10,10);        buf[2] = Character.forDigit((year/10)%10,10);        buf[3] = Character.forDigit(year%10,10);        buf[5] = Character.forDigit(month/10,10);        buf[6] = Character.forDigit(month%10,10);        buf[8] = Character.forDigit(day/10,10);        buf[9] = Character.forDigit(day%10,10);        return new String(buf);    }

 

 

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jdbc-mysql基礎 util.date 和 sql.date 的toString方法是不同的