Setdate (date date) method in Java and conversion between string and Date

Often in the development process encountered such a problem, the data read from the database needs to be converted to a pair of image or Java bean, at this time is often used to setdate (date date), such a method. It feels like a simple and uncomfortable thing to do, and wasting time here really shouldn't. I am here to record what I have used, convenient for later access to use.

For example, the following setter method:

    PrivateString userId; Private BooleanIsLogin; PrivateDate Logintime;  Public voidsetlogintime (date logintime) {Date Oldlogintime= This. Logintime;  This. Logintime =Logintime; }     Public voidSetislogin (BooleanIsLogin) {        BooleanOldislogin = This. IsLogin;  This. IsLogin =IsLogin; }     Public voidSetuserid (String userId) {string Olduserid= This. userId;  This. UserId =userId; }

Used to convert a string to the date method

ImportJava.sql.Timestamp;ImportJava.text.DateFormat;Importjava.text.ParseException;ImportJava.text.SimpleDateFormat;ImportJava.util.Calendar;Importjava.util.Date; Public classDateutil {/*** The Set method is the Timestamp type * New Timestamp (s) *@returns*/     PublicTimestamp Newstamptime () {Longs=System.currenttimemillis (); return NewTimestamp (s); }    /*** Timestamp converted to String *@return     */     PublicString timestamptostring () {SimpleDateFormat DF=NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");//define the format without displaying millisecondsTimestamp now =NewTimestamp (System.currenttimemillis ());//Get system Current timeString str =Df.format (now); returnstr; }    /*** String conversion to timestamp *@return     */     PublicTimestamp Stringtotimestamp () {SimpleDateFormat DF=NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); String Time= Df.format (NewDate ()); Timestamp TS=timestamp.valueof (time); returnts; }     PublicDate Mystringtotimestamp (String datestring) {intLength=datestring.length (); if(length>10) {DateFormat df=NewSimpleDateFormat ("Yyyy-mm-dd"); Date Today=NewDate (); Try{Today= Df.parse ("2009-11-11")); //String Ts=df.format (today);}Catch(ParseException e) {e.printstacktrace (); }            returntoday; }Else{DateFormat DF=NewSimpleDateFormat ("Yyyy-mm-dd"); Date Today=NewDate (); Try{Today= Df.parse ("2009-11-11")); //String Ts=df.format (today);}Catch(ParseException e) {e.printstacktrace (); }            returntoday; }            }    /*** String converted to Timestamp * string "2016-5-25" to Timestamp *@return           */           PublicTimestamp Stringtotimestamp (String datestring) {SimpleDateFormat df=NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); StringBuffer DS=NewStringBuffer (datestring); if(Datestring.length () >10) {Timestamp TS=timestamp.valueof (datestring); returnts; }Else{ds.append ("00:00:00"); Timestamp TS=timestamp.valueof (ds.tostring ()); returnts; }          }    /*** Get current time String * eg:2016-10-11 16:57:52 **/     PublicString formatedatestring () {SimpleDateFormat format=NewSimpleDateFormat ("Yyyy-mm-dd h:m:s"); String datestring=format.format (NewDate ()); returndatestring; }    /*** Specify time and current time comparison size*/     Public Booleancomparetime (String t1) {if(T1.length () <=10) {T1=t1+ "23:59:59"; } Date currenttime=NewDate ();//Current TimeSimpleDateFormat formatter =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); String Nowtime=Formatter.format (currenttime); Calendar Now=calendar.getinstance (); Calendar C1=calendar.getinstance (); //String t1 = "2016-02-29 00:30:00";                Try{now.settime (Formatter.parse (nowtime));                C1.settime (Formatter.parse (t1)); } Catch(ParseException e) {e.printstacktrace (); }                intRESULT1 = Now.compareto (C1);//smaller than start time, not startedSYSTEM.OUT.PRINTLN ("Result:" +RESULT1); if(result1>0){                    return false; }Else{                    return true; }               }          }

Setdate (date date) method in Java and conversion between string and Date