Conversion tool class between Long, String, date types in Java

Importjava.text.*;ImportJava.util.*; Public classDateFormat {/*** Format output of date type *@paramDate *@return     */     Public StaticString DateFormat (date date) {SimpleDateFormat formatter=NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); String datestring=Formatter.format (date); returndatestring; }    /*** Convert "2015-08-31-21:08:06" string to date *@paramSTR *@return     * @throwsparseexception*/     Public StaticDate stringtodate (String str)throwsparseexception{SimpleDateFormat Formatter=NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); Date Date=(Date) formatter.parse (str); returndate; }    /*** Format the CST time type string output *@paramSTR *@return     * @throwsparseexception*/     Public StaticString Cstformat (String str)throwsparseexception{SimpleDateFormat Formatter=NewSimpleDateFormat ("EEE MMM dd HH:mm:ss zzz yyyy", locale.us); Date Date=(Date) formatter.parse (str); returnDateFormat (date); }    /*** Converts a long type to date *@paramSTR *@return     * @throwsparseexception*/     Public StaticDate Longtodare (LongStrthrowsparseexception{return NewDate (STR * 1000); }}

Conversion tool class between Long, String, date types in Java