java create date object using a value string

Question

I am using this to get the current time    java util Calendar cal   java util Calendar getInstance        System out println new java text SimpleDateFormat  EEEE  dd MM yyyy hh mm ss                format cal getTime        I want to put the value  which I print it  into a date object  I tried this   Date currentDate   new Date value     but eclipse tells me that this function is not good   Edit the value is the value that I printed to you using system out println

User · Answer

Try this  -  try          String valuee  25 04 2013           Date currentDate  new SimpleDateFormat  dd MM yyyy   parse valuee           System out println  Date is     currentDate            catch Exception e               System out println  Error    e               e printStackTrace                Output -     Date is   Thu Apr 25 00 00 00 GMT 05 30 2013   Your value should be proper format   In your question also you have asked for this below   -      Date currentDate   new Date value     This style of date constructor is already deprecated So  its no more use Being we know that Date has 6 constructor Read more

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try this  it worked for me    String inputString    01-01-1900       Date inputDate  null      try           inputDate   new SimpleDateFormat  dd-MM-yyyy   parse inputString         catch  ParseException e            e printStackTrace               dp getDatePicker   setMinDate inputDate getTime

User · Answer

FIRST OF ALL KNOW THE REASON WHY ECLIPSE IS DOING SO   Date has only one constructor Date long date  which asks for date in long data type   The constructor you are using  Date String s  Deprecated  As of JDK version 1 1  replaced by DateFormat parse String s    Thats why eclipse tells that this function is not good   See this official docs   http   docs oracle com javase 6 docs api java util Date html    Deprecated methods from your context -- Source -- http   www coderanch com t 378728 java java Deprecated-methods   There are a number of reasons why a method or class may become deprecated  An API may not be easily extensible without breaking backwards compatibility  and thus be superseded by a more powerful API  e g   java util Date has been deprecated in favor of Calendar  or the Java 1 0 event model   It may also simply not work or produce incorrect results under certain circumstances  e g   some of the java io stream classes do not work properly with some encodings   Sometimes an API is just ill-conceived  SingleThreadModel in the servlet API   and gets replaced by nothing  And some of the early calls have been replaced by  Java Bean -compatible methods  size by getSize  bounds by getBounds etc      SEVRAL SOLUTIONS ARE THERE JUST GOOGLE IT--  You can use date long date  By converting your date String into long milliseconds and stackoverflow has so many post for that purpose   converting a date string into milliseconds in java

User · Answer

Use SimpleDateFormat parse method  import java text DateFormat  import java text SimpleDateFormat   String inputString    quot 11-11-2012 quot   DateFormat dateFormat   new SimpleDateFormat  quot dd-MM-yyyy quot    Date inputDate   dateFormat parse inputString  dateFormat     Since we have Java 8 with LocalDate I would suggest use next  import java time LocalDate  import java time format DateTimeFormatter   String inputString    quot 11-11-2012 quot   DateTimeFormatter formatter   DateTimeFormatter ofPattern  quot dd-MM-yyyy quot    LocalDate inputDate   LocalDate parse inputString formatter

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Here is the optimized solution to do it with SimpleDateFormat parse   method   SimpleDateFormat formatter   new SimpleDateFormat           EEEE  dd MM yyyy hh mm ss    String strDate   formatter format new Date      try       Date pDate   formatter parse strDate     catch  ParseException e       note  parse method can throw ParseException     e printStackTrace        Few things to notice   We don t need to create a Calendar instance to get the current date  amp  time instead use new Date   Also it doesn t require 2 instances of    SimpleDateFormat as found in the most voted answer for this    question  It s just a waste of memory Furthermore  catching a generic exception like Exception is a bad practice when we know that the parse method only stands a chance to throw a ParseException  We need to be as specific as possible when dealing with Exceptions  You can refer  throws Exception bad practice

User · Answer

What you re basically trying to do is this -  Calendar cal   Calendar getInstance    Date date   cal getTime      The reason being  the String which you re printing is just a String representation of the Date in your required format  If you try to convert it to date  you ll eventually end up doing what I ve mentioned above   Formatting Date cal getTime    to a String and trying to get back a Date from it - makes no sense  Date has no format as such  You can only get a String representation of that using the SDF

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It is because value coming String  Java Date object constructor for getting string is deprecated   and Date String  is deprecated   Have a look at jodatime or  you could put  SuppressWarnings     deprecation      outside the method calling the Date String  constructor

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Whenever you want to convert a String to Date object then use SimpleDateFormat parse Try to use   String dateInString   new java text SimpleDateFormat  EEEE  dd MM yyyy hh mm ss            format cal getTime    SimpleDateFormat formatter   new SimpleDateFormat  EEEE  dd MM yyyy hh mm ss    Date parsedDate   formatter parse dateInString      Additional thing is if you want to convert a Date to String then you should use SimpleDateFormat format function Now the Point for you is   new Date String  is deprecated and not recommended now Now whenever anyone wants to parse   then he she should use SimpleDateFormat parse   refer the official doc for more Date and Time Patterns used in SimpleDateFormat options

User · Answer

import java util Date   import java text SimpleDateFormat    Above is the import method  below is the simple code for Date   SimpleDateFormat dateFormat   new SimpleDateFormat  yyyy MM dd HH mm ss     Date date   new Date      system out println  dateFormat format date

[java] java create date object using a value string

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