Java.util.Date deprecated methods, looking for new ones
Hi,
I can't find anywhere.
I'm looking for Date methods, exactly like
getYear();
getDay();
but i don't want them being deprecated.
I want to get an INT out of a Date (Year, Day, ...)
please give me a link, name of a fucntion or something.
Thanks
Look at the API docs. It says that you have to use the methods in java.util.Calendar instead.
Similar Messages
-
Error:Class java.util.date not found
i have installed 9iAS on my computer.And i want to develop program on JSP.i tried the url below
http://eyuksel/servlet/IsItWorking
and i got "it is working" message.when i try to execute my first jsp file i get the error:
Errors compiling:d:\ias\apache\apache\htdocs\_pages\\_first.java
d:\ias\apache\apache\htdocs\_pages\_first.java:55: Class java.util.date not found.
out.print( new java.util.date() );
^
1 error
what must i do or how can i install the java classes.
kind regards...
nullThank you very much.It worked:)
Java is case-sensitive.
try
java.util.Date
instead of
java.util.date
null -
Cannot find symbl method update Date(int,java.util.Date)
I get following error
cannot find symbl method update Date(int,java.util.Date) on compling class called GuestDataBean at line ( rowSet.updateDate( 4, guest.getDate() ); ).
GustBean.java. I need help on why I get it.
// JavaBean to store data for a guest in the guest book.
package com.deitel.jhtp6.jsp.beans;
import java.util.*;
public class GuestBean
private String firstName;
private String lastName;
private String email;
private Date date;
private String message;
//Constructors
public GuestBean(){
public GuestBean(String firstname, String lastname, String email,Date date,String message){
this.firstName=firstname;
this.lastName=lastName;
this.email=email;
this.date=date;
this.message=message;
// set the guest's first name
public void setFirstName( String name )
firstName = name;
} // end method setFirstName
// get the guest's first name
public String getFirstName()
return firstName;
} // end method getFirstName
// set the guest's last name
public void setLastName( String name )
lastName = name;
} // end method setLastName
// get the guest's last name
public String getLastName()
return lastName;
} // end method getLastName
// set the guest's email address
public void setEmail( String address )
email = address;
} // end method setEmail
// get the guest's email address
public String getEmail()
return email;
} // end method getEmail
public void setMessage( String mess)
message = mess;
} // end method setEmail
// get the guest's email address
public String getMessage()
return message;
} // end method getEmail
public void setDate( Date dat )
date = dat;
} // end method setEmail
// get the guest's email address
public Date getDate()
return date;
} // end method getEmail
} // end class GuestBean
GuestDataBean.java/**
* @(#)GuestDataBean.java
* @author
* @version 1.00 2008/7/18
// Class GuestDataBean makes a database connection and supports
// inserting and retrieving data from the database.
package com.deitel.jhtp6.jsp.beans;
import java.sql.SQLException;
import javax.sql.rowset.CachedRowSet;
import java.util.ArrayList;
import com.sun.rowset.CachedRowSetImpl; // CachedRowSet implementation
import java.sql.*;
public class GuestDataBean
private CachedRowSet rowSet;
// construct TitlesBean object
public GuestDataBean() throws Exception
// load the MySQL driver
Class.forName( "org.gjt.mm.mysql.Driver" );
// specify properties of CachedRowSet
rowSet = new CachedRowSetImpl();
rowSet.setUrl( "jdbc:mysql://localhost:3306/virsarmedia" );
rowSet.setUsername( "root" );
rowSet.setPassword( "" );
// obtain list of titles
rowSet.setCommand(
"SELECT firstName, lastName, email,date,message FROM guest" );
rowSet.execute();
} // end GuestDataBean constructor
// return an ArrayList of GuestBeans
public ArrayList< GuestBean > getGuestList() throws SQLException
ArrayList< GuestBean > guestList = new ArrayList< GuestBean >();
rowSet.beforeFirst(); // move cursor before the first row
// get row data
while ( rowSet.next() )
GuestBean guest = new GuestBean();
guest.setFirstName( rowSet.getString( 1 ) );
guest.setLastName( rowSet.getString( 2 ) );
guest.setEmail( rowSet.getString( 3 ) );
guest.setDate( rowSet.getDate( 4 ) );
guest.setMessage( rowSet.getString( 5 ) );
guestList.add( guest );
} // end while
return guestList;
} // end method getGuestList
// insert a guest in guestbook database
public void addGuest( GuestBean guest ) throws SQLException
rowSet.moveToInsertRow(); // move cursor to the insert row
// update the three columns of the insert row
rowSet.updateString( 1, guest.getFirstName() );
rowSet.updateString( 2, guest.getLastName() );
rowSet.updateString( 3, guest.getEmail() );
rowSet.updateDate( 4, guest.getDate() );
rowSet.updateString( 5, guest.getMessage() );
rowSet.insertRow(); // insert row to rowSet
rowSet.moveToCurrentRow(); // move cursor to the current row
rowSet.commit(); // propagate changes to database
} // end method addGuest
} // end class GuestDataBeanThis isn't a JSP question, it better belongs in the JavaProgramming, or JDBC forums.
But the problem is because the updateDate method uses a java.sql.Date object and you are giving it a java.util.Date object. You have to convert from java.util.Date to java.sql.Date. See: [the api for java.sql.Date|http://java.sun.com/javase/6/docs/api/java/sql/Date.html] .
Edited by: stevejluke on Jul 21, 2008 5:43 PM -
This tex.setValue(new java.util.Date().toString()); no give me current time
hi master
sir i use this textfield1ddt.setValue(new java.util.Date().toString()); command for current date and time
first time when i press button this command give me this
Sat Sep 08 14:07:05 GMT+05:00 2007
result in my textbox but again i press press button no change in textfield
and not give me current time
please give idea how i give current time
thank's
aamirHi!
You can use GregorianCalendar.getInstance().getTime() which returns current data as instance of Date class for default time zone and locale.
Thanks,
Roman. -
Java.sql.Date vs java.util.Date vs. java.util.Calendar
All I want to do is create a java.sql.Date subclass which has the Date(String) constructor, some checks for values and a few other additional methods and that avoids deprecation warnings/errors.
I am trying to write a wrapper for the java.sql.Date class that would allow a user to create a Date object using the methods:
Date date1 = new Date(2003, 10, 7);ORDate date2 = new Date("2003-10-07");I am creating classes that mimic MySQL (and eventually other databases) column types in order to allow for data checking since MySQL does not force checks or throw errors as, say, Oracle can be set up to do. All the types EXCEPT the Date, Datetime, Timestamp and Time types for MySQL map nicely to and from java.sql.* objects through wrappers of one sort or another.
Unfortunately, java.sql.Date, java.sql.Timestamp, java.sql.Time are not so friendly and very confusing.
One of my problems is that new java.sql.Date(int,int,int); and new java.util.Date(int,int,int); are both deprecated, so if I use them, I get deprecation warnings (errors) on compile.
Example:
public class Date extends java.sql.Date implements RangedColumn {
public static final String RANGE = "FROM '1000-01-01' to '8099-12-31'";
public static final String TYPE = "DATE";
* Minimum date allowed by <strong>MySQL</strong>. NOTE: This is a MySQL
* limitation. Java allows dates from '0000-01-01' while MySQL only supports
* dates from '1000-01-01'.
public static final Date MIN_DATE = new Date(1000 + 1900,1,1);
* Maximum date allowed by <strong>Java</strong>. NOTE: This is a Java limitation, not a MySQL
* limitation. MySQL allows dates up to '9999-12-31' while Java only supports
* dates to '8099-12-31'.
public static final Date MAX_DATE = new Date(8099 + 1900,12,31);
protected int _precision = 0;
private java.sql.Date _date = null;
public Date(int year, int month, int date) {
// Deprecated, so I get deprecation warnings from the next line:
super(year,month,date);
if(! isWithinRange(this))
throw new ValueOutOfRangeException((RangedColumn)this, "" + this);
public Date(String s) {
super(0l);
// Start Cut-and-paste from java.sql.Date.valueOf(String s)
int year;
int month;
int day;
int firstDash;
int secondDash;
if (s == null) throw new java.lang.IllegalArgumentException();
firstDash = s.indexOf('-');
secondDash = s.indexOf('-', firstDash+1);
if ((firstDash > 0) & (secondDash > 0) & (secondDash < s.length()-1)) {
year = Integer.parseInt(s.substring(0, firstDash)) - 1900;
month = Integer.parseInt(s.substring(firstDash+1, secondDash)) - 1;
day = Integer.parseInt(s.substring(secondDash+1));
} else {
throw new java.lang.IllegalArgumentException();
// End Cut-and-paste from java.sql.Date.valueOf(String s)
// Next three lines are deprecated, causing warnings.
this.setYear(year);
this.setMonth(month);
this.setDate(day);
if(! isWithinRange(this))
throw new ValueOutOfRangeException((RangedColumn)this, "" + this);
public static boolean isWithinRange(Date date) {
if(date.before(MIN_DATE))
return false;
if(date.after(MAX_DATE))
return false;
return true;
public String getRange() { return RANGE; }
public int getPrecision() { return _precision; }
public String getType() { return TYPE; }
}This works well, but it's deprecated. I don't see how I can use a java.util.Calendar object in stead without either essentially re-writing java.sql.Date almost entirely or losing the ability to be able to use java.sql.PreparedStatement.get[set]Date(int pos, java.sql.Date date);
So at this point, I am at a loss.
The deprecation documentation for constructor new Date(int,int,int)says "instead use the constructor Date(long date)", which I can't do unless I do a bunch of expensive String -> [Calendar/Date] -> Milliseconds conversions, and then I can't use "super()", so I'm back to re-writing the class again.
I can't use setters like java.sql.Date.setYear(int) or java.util.setMonth(int) because they are deprecated too: "replaced by Calendar.set(Calendar.DAY_OF_MONTH, int date)". Well GREAT, I can't go from a Date object to a Calendar object, so how am I supposed to use the "Calendar.set(...)" method!?!? From where I'm sitting, this whole Date deprecation thing seems like a step backward not forward, especially in the java.sql.* realm.
To prove my point, the non-deprecated method java.sql.Date.valueOf(String) USES the DEPRECATED constructor java.util.Date(int,int,int).
So, how do I create a java.sql.Date subclass which has the Date(String) constructor that avoids deprecation warnings/errors?
That's all I really want.
HELP!I appreciate your help, but what I was hoping to accomplish was to have two constructors for my java.sql.Date subclass, one that took (int,int,int) and one that took ("yyyy-MM-dd"). From what I gather from your answers, you don't think it's possible. I would have to have a static instantiator method like:public static java.sql.Date createDate (int year, int month, int date) { ... } OR public static java.sql.Date createDate (String dateString) { ... }Is that correct?
If it is, I have to go back to the drawing board since it breaks my constructor paradigm for all of my 20 or so other MySQL column objects and, well, that's not acceptable, so I might just keep my deprecations for now.
-G -
What's wrong with java.util.Date??
Hi all,
I was just practicing a bit of java.util ,when i was compiling my code-
import java.util.Date;
import java.text.SimpleDateFormat;
class DateStamp{
public static void Main(String args[]){
doDate1;
String D;
int D1,D2,D3;
Date dt=new Date();
SimpleDateFormat sdf=new SimpleDateFormat("dd-mm-yyyy");
/*When using method .setDate(x) ,is x an integer or String?can x=2/5/2002 or 2-5-2002?*/
public void doDate1{
dt.setDay(12);
dt.setMonth(12);
dt.setYear(102);
D=dt.getTime();
D.parseInt(D1);D=""
D=sdf.getTime();
D.parseInt(D2);
int D3=D2-D1;
int D3=D3/86400000;/*How do you convert milisec-to-days?*/
D=D3.toString().
System.out.println(D+"days have elapsed since then");
the compiler said this-
File Compiled...
--------------------------- Javac Output ---------------------------
DateStamp.java:7: Invalid expression statement.doDate1;^DateStamp.java:14: Instance variables can't be void: doDate1public void doDate1; ^2 errors
this problem is persistant, and i'm a java newbie ,Does anyone know what's wrong here?
Thanks!
Regards,
aesh83How do you get System date onto a Date variable?Calendar.getInstance().getTime() returns a java.util.Date for the current time. You can also use System.currentTimeMillis() and turn it into a Date.
Will date.after(Date when) method work when Date
variables are in milisecs?Date.after(Date when) compares two date objects. As the JavaDoc says "Returns:
true if and only if the instant represented by this Date object is strictly later than the instant represented by when" To me that says that milliseconds are taken into account, I.E. comparing dates actually compares the date plus the time portion.
>
What methods-
*Convert a date(dd/mm/yy) to milisec?If you look in the javaDoc you'll see "long getTime() Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Date object." Calendar also has the getTimeInMillis() method.
*Convert a milisec value to a date(dd/mm/yy)?Calendar.setTimeInMillis(long);
I'm have this little problem.
When using GregorianCalander-
*need to initialize?
*need set today's date?Calendar.getInstance() will return an appropriate Calendar object for the current locale initialized to the current date/time.
*how do you check if a date exceeds 3 weeks?I'm not sure what you mean. There are a couple of roll(...) methods that will allow you to add a unit of time to a date. I.E. you could add three weeks to a date.
To ignore the time portion of a date just set the time to "00:00"
Col -
Error while deploying a web service whose return type is java.util.Date
Hi
I have written a simple web service which takes in a date input (java.util.Date) and returns the same date back to the client.
public interface Ping extends Remote
* A simple method that pings the server to test the webservice.
* It sends a datetime to the server which returns the datetime.
* @param pingDateRequest A datetime sent to the server
* @returns The original datetime
public Date ping(Date pingDateRequest) throws RemoteException;
The generation of the Web service related files goes smoothly in JDeveloper 10g. The problem arises when I try to deploy this web service on the Oracle 10g (10.0.3) OC4J standalone. it gives me the following error on the OC4J console :
E:\Oracle\oc4j1003\j2ee\home\application-deployments\Sachin-TradingEngineWS-WS\
WebServices\com\sachin\tradeengine\ws\Ping_Tie.java:57: ping(java.util.Date) in com.sachin.tradeengine.ws.Ping cannot be applied to (java.util.Calendar) _result = ((com.sachin.tradeengine.ws.Ping) getTarget()).ping
(myPing_Type.getDate_1());
^
1 error
04/03/23 17:17:35 Notification ==> Application Deployer for Sachin-TradingEngineWS-WS FAILED: java.lang.InstantiationException: Error compiling :E:\Oracle\oc4j1003\j2ee\home\applications\Sachin-TradingEngineWS-WS\WebServices: Syntax error in source [ 2004-03-23T17:17:35.937GMT+05:30 ]
I read somewhere that the conversion between java to xml datatype and vice versa fails for java.util.Date, so it is better to use java.util.Calendar. When I change the code to return a java.util.Calendar then the JDeveloper prompts me the following failure:
Method Ping: the following parameter types do not have an XML Schema mapping and/or serializer specified : java.util.Calendar.
This forces me to return a String data.
I would appreciate if someone can help me out.
Thanks
Sachin Mathias
Datamatics Ltd.Hi
I got the web service working with some work around. But I am not sure it this approach would be right and good.
I started altogether afresh. I did the following step :
1. Created an Interface (Ping.java) for use in web Service as follows :
public interface Ping extends Remote{
public java.util.Date ping(java.util.Date pingDateRequest)
throws RemoteException;
2. Implemented the above interface in PingImpl.java as follows :
public class PingImpl implements Ping
public java.util.Date ping(java.util.Date pingDateRequest) throws RemoteException {
System.out.println("PingImpl: ping() return datetime = " + pingDateRequest.toString());
return pingDateRequest;
3. Compiled the above 2 java files.
4. Generated a Stateless Java Web Service with the help of JDeveloper. This time the generation was sucessful.(If I had "java.util.Calendar" in place of "java.util.Date" in the java code of the above mentioned files the web service generation would prompt me for error)
5. After the generation of Web Service, I made modification to the Ping interface and its implementing class. In both the files I replaced "java.util.Date" with "java.util.Calendar". The modified java will look as follows :
Ping.Java
=========
public interface Ping extends Remote{
public java.util.Calendar ping(java.util.Calendar pingDateRequest)
throws RemoteException;
PingImpl.Java
================
public class PingImpl implements Ping
public java.util.Calendar ping(java.util.Calendar pingDateRequest) throws RemoteException {
System.out.println("PingImpl: ping() return datetime = " + pingDateRequest.toString());
return pingDateRequest;
6. Now I recompile both the java files.
7. Withour regenerating the Web Service I deploy the Web Service on OC4j 10.0.3 from JDeveloper. This time the deployment was sucessful.(The Deployment fails if I don't follow the step 5.)
8. Now I generated a Stub from JDeveloper and accessed the stub from a client. It works fine. Here if you see the Stub code it takes java.util.Date as a parameter and returns a java.util.Date. (Mind you I am accepting a java.util.Calendar and returning the same in my Web Service interface. Step 5)
The confusing thing is the Serialization and Deserialization of Data from Client java data to Soap message and Soap message to Server java data.
From Client to SOAP :
java.util.Date to datetime
From SOAP to Server :
datetime to java.util.Calendar
From Server to SOAP :
java.util.Calendar to datetime
From SOAP to Client :
datetime to java.util.Date (I am not able to understand this part of the conversion)
Any help or inputs would be appreciated.
Thanks
Sachin Mathias -
Why not Deprecate java.util.Date and java.util.Calendar
With the introduction of java.time, why did you not flag java.util.Date and java.util.Calendar. These classes have been a bane to every Java developer and should never be used again with the introduction of Java 1.8.
Adding the @Deprecated annotation would only just provide a warning about an old API and recommendation to the developer(s) to no longer use it. Doing so would not break any existing library out there; in fact quite a number of constructors and methods on the Date class have already been flagged deprecated.
The new java.time package is far superior to Date/Calendar. -
What's wrong with java.util.Date type?
Hi!
When I try to persist object having field of type java.util.Date I get the
following SQL logged by Kodo with subsequent transaction rollback:
2002-11-14 15:03:35,099 INFO
[com.solarmetric.kodo.impl.jdbc.ee.ManagedConnecti
onFactoryImpl.supportcrm/kodo] INSERT INTO BILLY.TT_COMMENTS(COMMENT_TYPE,
TEXT,
CREATED_BY, ID, SUBJECT, CREATE_DATE, TT_MAIN_ID) VALUES (1, '1', 10, 279,
'1',
{ts '2002-11-14 15:03:35.059'}, 147)
When I change "{ts '2002-11-14 15:03:35.059'}" with "TO_DATE('2002-11-14
15:03', 'YYYY-DD-MM HH24:MI')" in SQL editor
and execute it everything works fine.
What does "{ts '..'}" mean? Is it a SQL generation error?
Thank you in advance.
Best regards,
Alexey MaslovI've created my own dictionary with dateToSQL() method overridden.
Now it works fine. But it's a kind of strange. Oracle is used often and my
JDBC drivers
are the most recent (at least, from the oracle.com).
Anyway, thank you again.
"Alexey Maslov" <[email protected]> wrote in message
news:[email protected]...
Patric,
Thank you for response.
We're using Oracle 8.1.7 via OCI driver from Oracle 9.2.
I've already tried 2.4.0 and it works fine there but I've found another
problem there
preventing me from using it. See my post in solarmetric.kodo.betanewsgroup.
>
"Patrick Linskey" <[email protected]> wrote in message
news:[email protected]...
That's odd -- what version of Oracle are you using?
Moving to Kodo JDO 2.4.0
(http://www.solarmetric.com/Software/beta/2.4.0) will almost certainly
get rid of this problem, as we use exclusively prepared statements in
it, and therefore pass dates etc. to JDBC as parameters.
But, to get things working with your Oracle database and Kodo JDO 2.3,
you could create your own extension of OracleDictionary and override the
dateToSQL() method to generate the appropriate TO_DATE() syntax. See our
documentation for more details on creating custom database dictionaries.
-Patrick
Alexey Maslov wrote:
I've added TRACE level logging for transactions in JBoss and got
original
exception:
NestedThrowables:
com.solarmetric.kodo.impl.jdbc.sql.SQLExceptionWrapper: [SQL=INSERT
INTO
BILLY.T
T_MAIN(TT_SOLUTION_ID, DELAY_REASON, TT_STATE_ID, ID, CONTACT_PHONE,
CANCEL_REAS
ON, OPER_DESCR, TT_TYPE_ID, CREATED_BY, EXP_CLOSE_DATE,SERV_OPEN_DATE,
OPEN_DAT
E, FLAGS, TAKEN_BY, TT_CAT_ID, SUBJECT_ID, SUBJECT, SERV_CLOSE_DATE)
VALUES
(NUL
L, NULL, 1, 439, NULL, NULL, '____________ ________________ ________________', 7, 5, {ts
'2002-11-14 1
8:38:16.075'}, NULL, {ts '2002-11-14 18:18:16.075'}, 0, NULL, 11,24099,
'1', NU
LL)] ORA-00904: invalid column name
at
com.solarmetric.kodo.impl.jdbc.runtime.SQLExceptions.throwFatal(SQLEx
ceptions.java:17)
at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.insert(JDBCSt
oreManager.java:421)
at
com.solarmetric.kodo.runtime.datacache.DataCacheStoreManager.insert(D
ataCacheStoreManager.java:265)
at
com.solarmetric.kodo.runtime.StateManagerImpl.insert(StateManagerImpl
..java:1783)
atcom.solarmetric.kodo.runtime.PNewState.flush(PNewState.java:31)
at
com.solarmetric.kodo.runtime.StateManagerImpl.flush(StateManagerImpl.
java:372)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.flush(Persistence
ManagerImpl.java:426)
at
com.solarmetric.kodo.ee.EEPersistenceManager.beforeCompletion(EEPersi
But when I try to execute the statement above against the database
manually
everything works fine.
I'm absolutely desperate!
P.S. On 2.4.0 RC the operation invoking this database insert completes
fine.
"Alexey Maslov" wrote in message
news:[email protected]...
Hi!
When I try to persist object having field of type java.util.Date I
get
the
following SQL logged by Kodo with subsequent transaction rollback:
2002-11-14 15:03:35,099 INFO
[com.solarmetric.kodo.impl.jdbc.ee.ManagedConnecti
onFactoryImpl.supportcrm/kodo] INSERT INTOBILLY.TT_COMMENTS(COMMENT_TYPE,
TEXT,
CREATED_BY, ID, SUBJECT, CREATE_DATE, TT_MAIN_ID) VALUES (1, '1',
10,
>>>
279,
'1',
{ts '2002-11-14 15:03:35.059'}, 147)
When I change "{ts '2002-11-14 15:03:35.059'}" with
"TO_DATE('2002-11-14
15:03', 'YYYY-DD-MM HH24:MI')" in SQL editor
and execute it everything works fine.
What does "{ts '..'}" mean? Is it a SQL generation error?
Thank you in advance.
Best regards,
Alexey Maslov
Patrick Linskey [email protected]
SolarMetric Inc. http://www.solarmetric.com
Best regards,
Alexey Maslov -
How can i compare: java.util.Date oracle.jbo.domain.Date?
I have made a ViewObject wich contains a date column.
I want to check if this date is smaller/greater than sysdate:
i get following error:
Error(45,24): method <(java.util.Date, oracle.jbo.domain.Date) not found in class Class4
code:
SimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, ids[0]);
// set up rules for daylight savings time
pdt.setStartRule(Calendar.APRIL, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
pdt.setEndRule(Calendar.OCTOBER, -1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
// create a GregorianCalendar with the Pacific Daylight time zone
// and the current date and time
Calendar calendar = new GregorianCalendar(pdt);
Date trialTime = new Date();
calendar.setTime(trialTime);
(VO_ULNRow)singleRow = null;
while(vo.hasNext()){ // ViewObject vo;
singleRow = (VO_ULNRow)vo.next();
if(calendar.getTime() < singleRow.getEO_ULN_BORROWFROM()); //singleRow returns oracle.jbo.domain.Date
etcetera
how can i compare those 2?Hi,
oracle.jbo.domain.Date has two methods which suit your needs
longValue() which returns a long (though I'm not sure if returns a long comparable to the long returned by java.util.Date)
and dateValue() which returns a java.util.Date
I hope it helps,
Giovanni -
Java.util.Date oracle.jbo.domain.Date how can i compare?
I have made a ViewObject wich contains a date column.
I want to check if this date is smaller/greater than sysdate:
i get following error:
Error(45,24): method <(java.util.Date, oracle.jbo.domain.Date) not found in class Class4
code:
SimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, ids[0]);
// set up rules for daylight savings time
pdt.setStartRule(Calendar.APRIL, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
pdt.setEndRule(Calendar.OCTOBER, -1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
// create a GregorianCalendar with the Pacific Daylight time zone
// and the current date and time
Calendar calendar = new GregorianCalendar(pdt);
Date trialTime = new Date();
calendar.setTime(trialTime);
(VO_ULNRow)singleRow = null;
while(vo.hasNext()){ // ViewObject vo;
singleRow = (VO_ULNRow)vo.next();
if(calendar.getTime() < singleRow.getEO_ULN_BORROWFROM()); //singleRow returns oracle.jbo.domain.Date
etcetera
how can i compare those 2?i get following error:
Error(45,24): method <(java.util.Date,
oracle.jbo.domain.Date) not found in class Class4
if(calendar.getTime() <
singleRow.getEO_ULN_BORROWFROM()); //singleRow returns
oracle.jbo.domain.Date
how can i compare those 2? You cannot compare these two values directly. You must convert the oracle.jbo.domain.Date object to a GregorianCalendar object. Something like:
oracle.jbo.domain.Date dt = singleRow.getEO_ULN_BORROWFROM();
GregorianCalendar gc = new GregorianCalendar(dt.getYear(), dt.getMonth(), dt.getDay());
if (calendar.getTime() < gc.getTime())
} -
Java.util.Date badly serialized to java.sql.Timestamp Coherence 3.5.2
Hi all,
I'm running into this odd behaviour.
I serialize java.util.Date objects to cache and when I read them back from cache, they appear to be java.sql.Timestamp types.
I've isolated a junit test for that.
Do you know why Coherence changes the type in the middle?
Regards
Harry.
import java.util.Date;
import org.junit.Assert;
import org.junit.Test;
import com.tangosol.io.Serializer;
import com.tangosol.io.pof.ConfigurablePofContext;
import com.tangosol.util.ExternalizableHelper;
public class DatePofSerialTest {
@Test
public void testCobdate() throws Exception {
Date date=new Date();
Serializer serial = new ConfigurablePofContext();//"coherence-pof-config.xml");
Date date2=(Date)ExternalizableHelper.fromBinary(ExternalizableHelper.toBinary(date, serial), serial);
System.out.println(serial +" -- Date to serailize ["+ date.getClass() + "]");
System.out.println(serial +" -- Date from deserialize ["+ date2.getClass() + "]");
Assert.assertEquals(date, date2);/* Of course this passes, as both refer to the same time (long)*/
{code}
This gives as output
{code:title=output |borderStyle=solid}
log4j:WARN No appenders could be found for logger (Coherence).
log4j:WARN Please initialize the log4j system properly.
com.tangosol.io.pof.ConfigurablePofContext {location=coherence-pof-config.xml} -- Date to serailize [class java.util.Date]
com.tangosol.io.pof.ConfigurablePofContext {location=coherence-pof-config.xml} -- Date from deserialize [class java.sql.Timestamp]
{code}Hi Harry,
It looks like the same issue as ...
PofExtractor with java.util.Date results in ClassCastException
It was fixed in version 3.5.4.
Thanks -
A bug in java.util.Date module?
When I try to execute this code:
private java.util.Date getStringAsDate(String s) throws Exception {
SimpleDateFormat fmt = new SimpleDateFormat("DD.MM.yyyy");
return fmt.parse(s);
java.util.Date one = getStringAsDate("8.6.2005"), two = getStringAsDate("8.7.2005");
if (one.compareTo (two) ==0 )
System.out.println("Equals!");
else
System.out.println("Not equals!");
System.out.println(one);
System.out.println(two);I get this result:
Equals!
Sat Jan 08 00:00:00 GMT+01:00 2005
Sat Jan 08 00:00:00 GMT+01:00 2005
My locales are Czech, time zone GMT+01. Thoughts?Thanks.
I was looking for an error in months as they were
incorrect...Look into the API and you should see why the month value is wrong for the pattern you wrote:
http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.htmlThe hint is in the definition of 'D' versus 'd'. -
hello all. could anyone please help me or give me some input about a small problem i have run in to. okay, im writing a program that will read in 3 different text files and have them sorted into array lists. well i am working on the 3 main class definitions and i have run into a problem. the first 2 classes i just created strings and then ran a equals and a compareTo on them to determine which entry would be first alphabetically when it is entered into the database. well on the last class.. i wanted to do the same thing (create 2 strings and compare them that way).. but i have a java.util.date variable that i am dealing with. is it okay to read in the date into a string like i have been doing? or do i need to do something else.. i am posting the code below so please have a look and get back to me. thanks in advance!
lastName (is a String)
firstName (is a String)
title (is a String)
dateOfPurchase (is a Date)
public boolean equals(Order anOrder)
boolean result;
String x1 = this.dateOfPurchase + this.lastName + this.firstName + this.title;
String x2 = anOrder.dateOfPurchase + anOrder.lastName + anOrder.firstName + anOrder.title;
int i = 0;
result = true;
while (i < x1.length())
if (x1.charAt(i) == x2.charAt(i))
i++;
else
result = false;
return result;
}And if you don't understand casting, look for it in one of the following:
Sun's basic Java tutorial
Sun's New To Java Center. Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
http://javaalmanac.com. A couple dozen code examples that supplement The Java Developers Almanac.
jGuru. A general Java resource site. Includes FAQs, forums, courses, more.
JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns." FAQs, forums (moderated, I believe), sample code, all kinds of goodies for newbies. From what I've heard, they live up to the "friendly" claim.
Bruce Eckel's Thinking in Java (Available online.)
Joshua Bloch's Effective Java
Bert Bates and Kathy Sierra's Head First Java. -
(Again) java.util.Date vs java.sql.Date
Hi there,
(Again) Im trying to understand the EXACT difference between
java.util.Date vs java.sql.Date.
Googling, I can see that this is a very "popular" subject, but I still
cannot figure out it exactly.
Many writers claim that java.sql.Date only stores the DATE part (yyyy-
mm-dd) but not the TIME part (hh:MM:ss) of a Date/Time value, but that
I can easily disprove:
java.util.Date ud = new java.util.Date(); java.sql.Date sd = new java.sql.Date(ud.getTime()); System.out.println(DateFormatUtils. format(ud, "yyyy-MM-dd HH:mm:ss.SSS")); System.out.println(DateFormatUtils. format(sd, "yyyy-MM-dd HH:mm:ss.SSS"));
Output:
2009-09-18 15:17:36.635 2009-09-18 15:17:36.635
So, apparently, java.sql.Date and java.util.Date have THE SAME
precision (at least down to the millisecs...).
And the official API documentation, really looks more confusing than
helpful to me::
*"java.sql.Date:*
*A thin wrapper around a millisecond value that allows JDBC to identify*
*this as an SQL DATE value. A milliseconds value represents the*
*number of milliseconds that have passed since January 1, 1970*
*00:00:00.000 GMT.*
*To conform with the definition of SQL DATE, the millisecond values*
*wrapped by a java.sql.Date instance must be 'normalized' by setting*
*the hours, minutes, seconds, and milliseconds to zero in the*
*particular time zone with which the instance is associated. "*
Exactly what means "an SQL DATE value" ? How EXACTLY does it differ
from a java.util.Date value?
Most importantly: WHY does JDBC need to distinguish between them?
And, here again: *"a java.sql.Date instance must be 'normalized' by*
*setting the hours, minutes, seconds, and milliseconds to zero in the*
*particular time zone..."*
What does that mean exactly? Apparently, the constructor doesnt
enforce this restriction, per the example above. So what's the REAL
point with this type, java.sql.Date?
Very greatful, if you can help me clarify this, once and for all.
TIA,And the official API documentation, really looks more confusing than helpful to me:The problem is that you need to understand SQL as well as Java for this to make sense. It's not the Java API's job to tell you how your SQL database works - there's a myriad of subtle differences even when the DB is compliant with the SQL spec.
Most compliant databases support DATE, TIME, and TIMESTAMP values. DATE represents only a date. TIME represents only a time. TIMESTAMP represents both. There are further complicating factors, but that's roughly how it stands.
In Java the normal type for representing time is (or was when the API was created) the java.util.Date but this is a close approximation only to the TIMESTAMP value. In order to bring the two together the java.sql.Date, java.sql.Time and java.sql.Timestamp classes were created. Making them derive from java.util.Date was probably not a good idea.
java.util.Date suffers from a number of deficiencies. java.util.Calendar was supposed to address them but didn't really succeed. The JodaTime library is rather better, but it's all a lot more complicated than you might expect - partly because time management really is a much harder problem than it appears at first glance - there are timezones, leap years, leap seconds, the difference between astronomical and atomic time, and so on and so forth.
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