Is there a date data type in java???

Hi guys!
Is there a date data type in java???
How to declare date data type variable?
Your reply is greatly appreciated!
-=samer=-

RTFM
there's about 8 date types, depending on what you want
see
java.util.Date
java.util.Calendar
GregorianCalendar
SimpleDateFormat
System.currentTimeMillis()

Similar Messages

Exist DataTable Type in Java?

Hi, I'm new in Java Programming. In VB.Net I like to manipulate SQL Queries in a DataTable and later post it in a DataGridView. In VB exist a type called DataTable;
Dim dt as DataTable
I saw the JTable, but, that is like the DataGridView. I'm guessing if there is one DataTable type in Java?
Thanks in advanced for any help....
_e

Thanks! that's pretty much near of what I want. In VB the approach to create a data table and manipulate the data, like, add rows, add columns, etc... is more simple than java.
_e

Selecting #of bits for data types in Java

hi,
i would like to know if we can constrain compiler on allocating memory to basic data types, such as int, float, short etc. i would like to read an exactly four byte integer into an int, 2 byte short into a short etc. i need to read these parameters exactly of their specified number of bytes - not more or less - as if i read anything more/less, i will be reading a part of other parameter.
i know that C allows us to do this by letting us to specify number of bits we like to allocate for each data type (for eg. unsigned int:16; means i need an unsigned int of exactly 16bits (2 bytes long) -no more and no less).
Is there anything similar i can do in Java?
any suggestion is greately appreciated.
Thanks,

All primitive types in Java are well-defined. In contrast to C/C++, an int in Java is allways 32 bits, using one's complement, a char is allways 16 bits etc.
Java does not give you direct acces to physical memory - that would compromise the basic design of Java.
You can read individual bytes from files, and you can do all the integer arithmetic in Java as you can in C/C++. To convert eg. fout bytes to one int, you could do the following:
byte b1= (some byte value),
     b2,
     b3,
     b4;
int i= (((b1 << 8) | b2 << 8) | b3 << 8) | b4;
b1 being the most significant byte, b4 being the least significant.
Did this answer you questions?

(262119469) Q DBC-17 How is data mapped from SQL-type to Java-type?

Q<DBC-17> Is there any documentaion for the data mapping between the "java type" and
the "sql type"
A<DBC-17> The data types are the standard JDBC mappings. Check the javadoc for the
java.sql package.

Hi,
If you are seeing last 3 fields coming as empty.... then you need to check the seperator type which correctly seperats one fields from another during mapping to BW infoobject.
Thanks
Kishore Kusupati

How to read XI Data type in Java code and populate as array list, using UDF

Hi,
How to read XI Data type in Java code and populate as array list, using UDF?
Is there any API using which the XI data types can be read?
Kindly reply.
Richa

Input Structure:
<?xml version="1.0" encoding="UTF-8"?>
<ns0:CustomerCreateResp xmlns:ns0="urn:bp:xi:up:re:cust_mdm:cmdm:pr5:100">
   <CUSTOMER>
      <item>
         <CUSTOMERNO/>
         <MDMCUSTOMER/>
         <CREATE_DATE/>
         <RETURN>
            <TYPE/>
            <MESSAGE/>
         </RETURN>
         <PT_CONTPART_RETURN>
            <item>
               <MDM_CONTACT/>
               <CONTACT/>
            </item>
         </PT_CONTPART_RETURN>
         <PARTNERS>
            <item>
               <CUSTOMERNO/>
               <PARTNER_FUNCTION/>
               <PARTNER_NUMBER/>
               <DEFAULT_PARTNER/>
            </item>
         </PARTNERS>
      </item>
   </CUSTOMER>
</ns0:CustomerCreateResp>
Output structure
(Sample output structure.This actually needs to be mapped and generated using UDF)
<?xml version="1.0" encoding="UTF-8"?>
<ns1:updateCustomer xmlns:ns1="urn:xiSericeVi"><ns1:customer><ns2:ArrayList xmlns:ns2="java:sap/standard">[]</ns2:ArrayList></ns1:customer><ns1:name>2344566</ns1:name></ns1:updateCustomer>

How to get the values from struct data type using java code..?

Hi ,
I am newer to java.
we are using oracle database.
How to get the data from struct data type using java code.
Thanks in Advance.
Regards,
kumar

Hi Rajeev,
To retrieve a FilterContainer you will need to traverse the report structure:
ReportStructure boReportStructure = boDocumentInstance.getStructure();
ReportContainer boReportContainer = (ReportContainer) boReportStructure.getReportElement(0);
FilterContainer boFilterContainer = null;
if (boReportContainer.hasFilter()) {
boFilterContainer = boReportContainer.getFilter();
} else {
boFilterContainer = boReportContainer.createFilter(LogicalOperator.AND);
Calling boDocumentInstance.getStructure() will retrieve the entire structure for the document.
Calling boReportStructure.getReportElement(0) will retrieve the structure for the first report of the document.
Hope this helps.
Regards,
Dan

Does data type nvarchar in SQL 7.0 have matched DATA TYPE in JAVA

does data type nvarchar in SQL 7.0 have matched DATA TYPE in JAVA
I use odbc-jdbc bridge to connect to SQL 7.0
thanks in advance!

try String.
java.sql.Types.VARCHAR would be the sql type.

Can we print the data from types or return it to java ?

Hello,
The requirement is very clear that, their is a huge amount of data (80 lacs Rows Approx.) these rows are need to be showed in the front-end which is java. First the java team had written a simple select statement in the java codeing which was taking a quite a large time (10 - 20 min approx.), then i shifted this part to back-end i,e ORACLE 11g & wrote the plsql block below which consist of types.
Now i have managed to bring the data in types but how to print that data ??? is their any member function ??? How should i return this data to java code ???
ORACLE DATABASE 11g
Eclips Java
Linux Enterprice Edition 5
create or replace procedure date_time(v_fromtime in timestamp,v_totime in timestamp) is
type v_date_time is table of varchar2(4000);--T_MES_DSS_BLOCK_DATA_13.Date_Time%type;
datetime_tab v_date_time:=v_date_time();
type v_counter is table of T_MES_DSS_BLOCK_DATA_13.Counter%type;
counter_tab v_counter:=v_counter();
type v_column_1 is table of number;
column1_tab v_column_1:=v_column_1();
type v_column_2 is table of number;
column2_tab v_column_2:=v_column_2();
cursor dt is
select DATE_TIME, COUNTER,COLUMN_1, COLUMN_2
from (
select
/*+ INDEX(T_MES_DSS_BLOCK_DATA_13 IDX_MES_BLK_DATA_3_DATE_TIME) INDEX(T_MES_DSS_BLOCK_DATA_13 IDX_MES_BLK_DATA_3_COUNTER)*/
DATE_TIME, COUNTER,
dbms_xdbutil_int.rawtonum(SUBSTR(BLOCK_COLUMN_23, 121, 8))COLUMN_1,
dbms_xdbutil_int.rawtonum(LAG( (SUBSTR(BLOCK_COLUMN_23, 121, 8)),1,0 ) OVER (ORDER BY DATE_TIME ))COLUMN_2
from T_MES_DSS_BLOCK_DATA_13 PARTITION(PART11JUN2010)
where DATE_TIME BETWEEN v_fromtime and v_totime);
end_time number;
start_time number;
begin
start_time:=dbms_utility.get_time();
open dt;
loop
fetch dt bulk collect into datetime_tab,counter_tab,column1_tab,column2_tab;
exit when dt%notfound;
end loop;
close dt;
dbms_output.put_line('Number of Rows in Date_time:- ('||datetime_tab.count||'):');
dbms_output.put_line('Number of Rows in Counter:- ('||counter_tab.count||'):');
dbms_output.put_line('Number of Rows in column1:- ('||column1_tab.count||'):');
dbms_output.put_line('Number of Rows in column2:- ('||column2_tab.count||'):');
end_time:=dbms_utility.get_time();
dbms_output.put_line('Total Time:-'||to_char(end_time-start_time)/60);
end date_time;

Well anyhow i have managed to run this code using bulk collect feature & getting good performance but can i print this data ???
how to return this data which has bulk collect feature to java code ??? any idea ?
CREATE OR REPLACE PROCEDURE "MES01"."DATE_TIME"(v_fromtime in timestamp,v_totime in timestamp,
datetime_tab out t_mes_dss_block_data_13.date_time%type,
counter_tab out t_mes_dss_block_data_13.counter%type,
column1_tab out number,
column2_tab out number) is
cursor dt is
select DATE_TIME, COUNTER,COLUMN_1, COLUMN_2,rownum
from (
select /*+ INDEX(T_MES_DSS_BLOCK_DATA_1 IDX_MES_BLK_DATA_1_DATE_TIME) INDEX(T_MES_DSS_BLOCK_DATA_1 IDX_MES_BLK_DATA_1_COUNTER)*/
DATE_TIME, COUNTER,
dbms_xdbutil_int.rawtonum(SUBSTR(BLOCK_COLUMN_1, 1, 4))COLUMN_1,
dbms_xdbutil_int.rawtonum(LAG( (SUBSTR(BLOCK_COLUMN_1, 1, 4)),1,0 ) OVER (ORDER BY DATE_TIME ))COLUMN_2
from T_MES_DSS_BLOCK_DATA_1 PARTITION(PART03AUG2010)
where DATE_TIME BETWEEN '02-AUG-2010 09:00:00.0' and '02-AUG-2010 09:10:00.0')
where COLUMN_1 =0 and COLUMN_2 != 0 or (rownum=1 and COLUMN_1 = 0 and COLUMN_2 = 0);
--end_time number;
--start_time number;
begin --1st block
Declare --2nd declare
type v_date_time is table of T_MES_DSS_BLOCK_DATA_3.DATE_TIME%type;
datetime_tab v_date_time:=v_date_time();
type v_counter is table of T_MES_DSS_BLOCK_DATA_3.Counter%type;
counter_tab v_counter:=v_counter();
type v_column_1 is table of number;
column1_tab v_column_1:=v_column_1();
type v_column_2 is table of number;
column2_tab v_column_2:=v_column_2();
type v_rownum is table of number;
rownum_tab v_rownum:=v_rownum();
Begin --2nd block
--start_time:=dbms_utility.get_time();
open dt;
loop
fetch dt bulk collect into datetime_tab,counter_tab,column1_tab,column2_tab,rownum_tab;
exit when dt%notfound;
end loop;
close dt;
--dbms_output.put_line('Number of Rows in Date_time:- ('||datetime_tab.count||'):');
--dbms_output.put_line('Number of Rows in Counter:- ('||counter_tab.count||'):');
--dbms_output.put_line('Number of Rows in column1:- ('||column1_tab.count||'):');
--dbms_output.put_line('Number of Rows in column2:- ('||column2_tab.count||'):');
--end_time:=dbms_utility.get_time();
--dbms_output.put_line('Total Time:-'||to_char(end_time-start_time)/60);
end; -- 2nd block
end date_time; -- 1st block

Hi is there any XMLDocument data type available in SOAP libraries

How to convert string to XML Document data type and is there any XML Document type available in SOAP Libraries&j2ee api?

Hello Pradeep,
I attached a code sample. But if xString is no valid type it wont help.
Regards,
Klaus
report Test .
data:
    serialized_Data     type xstring,
    orig_Strings        type string_Table,
    clnt_Strings        type string_Table.
field-symbols:
    <cur_String> type string.
* data provider
do 10 times.
    insert initial line into table orig_Strings assigning <cur_String>.
    <cur_String> = sy-Index.
enddo.
sort orig_Strings descending.
export data = orig_Strings to data buffer serialized_Data.
* client side
import data = clnt_Strings from data buffer serialized_Data.
loop at clnt_Strings assigning <cur_String>.
    write: / sy-tabix, <cur_String>.
endloop.

Creating data dictionary type using custom java class

Hi Experts,
I have a situation involving the TableSorter mechanism as described here:
In order to do my sorting correctly, I've created my own Java class implementing the Comparable interface. Based on this class, I need to define my own data dictionary type to be used in a context/table.
However, I cannot se how this could be achieved as standard Data Dictionary elements can only be based on simple built-in types. Any ideas?
Kind regards,
Rasmus Røjkjær Ørtoft

Hi,
have you tried to use the following steps while creating your attribute
1) Right click on the context
2) New->Attribute
3) Manually-> Provide a name for the attribute
4) Browse->Select java native type and select your class
regards
Ayyapparaj

Can i see the column DATA(BLOB type) in PM_OBJECTS of DCM schema

we installed DCM managed clustering .it is Database repository type.
i am trying to see the column DATA(BLOB type) in PM_OBJECTS of DCM schema .
I wrote a program in java to read blob data type and write it into a temporary file.
when i open temporary files all the data in junk format.
can i see the real data of thatcolumn.Is it possible?
first of all for what purpose DCM shema will be used?

Hi,
There is no option to show the comments on the diagram.
We plan to add such feature in the next version.
Ivan

How to convert JAVA.SQL.DATE date in YYYY/MM/DD format into DD/MM/YYYY

i am using informix database which accepts date value in the form of DATE format......
the other part of my application takes date from the field in DD/MM/YYYY format...so i have to convert my java.sql.date in YYYY/MM/DD fromat into DD/MM/YYYY fromat of same type before inserting into db......
but using parse method in SimpleDateFormat class can get the result only in java.util.date format...
and also using format method can result only in string conversion........

816399 wrote:
i am using informix database which accepts date value in the form of DATE format......Huh?
Maybe you mean Informix (fronted by JDBC) expects date values as java.sql.Date objects?
the other part of my application takes date from the field in DD/MM/YYYY format...
so i have to convert my java.sql.date in YYYY/MM/DD format into DD/MM/YYYY format of same type before inserting into db......I am not sure why you are talking about formats here.
There is no formatting inherent in a java.util.Date object
nor in a java.sql.Date object.
but using parse method in SimpleDateFormat class can get the result only in java.util.date format...
and also using format method can result only in string conversion........You can easily create a java.sql.Date object from a java.util.Date object.
String s = "31/12/2010";
java.util.Date ud = new java.text.SimpleDateFormat("dd/MM/yyyy").parse(s);
java.sql.Date sd = new java.sql.Date(ud.getTime());
ud = sd; // java.sql.Date extends java.util.Date so no conversion is needed

Insert data to MySQL when there is new data in the text file

I have one log file, the log file will update its data (alarm type & datetime) when there is alarm. If I would like to write program to monitor the log file every minute, and insert the data to mysql when there is a new data in log file. Any Idea how to use java to write it ?
Thanks !

imagination21 wrote:
Any Idea how to use java to write it ?Yes. But do you have a specific question? What's the problem?

EJB-QL and date/time types

Hi,
as far as I understand, EJB-QL does not support date/time values.
Does anybody know how to work around this limitation?
Using long values containing milliseconds is not an alternative, because the database stores
date/time values.
I need to compare these date/time values to input parameters in finder methods.
Suggestions?
Bye the way, is there any reason for this limitation in EJB-QL, or did they simply forget to include
date/time types to the spec?
Greetings
Christian

Greetings,
Hi,
as far as I understand, EJB-QL does not support
date/time values. Actually, it does - EJB QL supports all types supported by a bean's abstract schema (IOW: available types for CMP/CMR fields). However, therein also lies the crutch - EJB QL is for querying beans, not the resource to which they map (EJB QL's similarity to SQL is purely for convenience; an Entity Bean, it should be remembered, may represent entities in any persistent store, not just RDBMSes). Therefore, you should be thinking in terms of Java types, not SQL ones... The specification, however, does place "restrictions" (ie. minimally required [vendor] support), on their use which should be limited to long millisecond values (by which a Date object performs an equals comparison... ;).
Does anybody know how to work around this limitation?Depends on what you're attempting. If you're using a Date as an argument to a finder, eg:
findByDateInRange( java.util.Date start, java.util.Date end )then this shouldn't pose a problem where your EJB QL would look like:
SELECT OBJECT(a) FROM MyBeanSchema AS a WHERE a.myDate BETWEEN ?1 AND ?2Presuming the bean MyBean contains a CMP field of type java.util.Date called 'myDate'. If, however, you must use a literal date then you will have to use a long literal unless your vendor supports otherwise. However, it might be worth noting that EJB QL must still be mapped to the underlying resource QL (eg. SQL), and so a more intelligble value (one that meets the resource's format requirements ;), could be used in the actual rQL statement.
Using long values containing milliseconds is not an
alternative, because the database stores
date/time values.I'm guessing you mean here something like "04/23/2002" and "13:13:35", etc. This, however, is not how the database actually stores the data - input/output formats such as these are supported for the convenience of us 'nuerically-challenged' humans (similar to internet hostnames vs. TCP/IP addresses ;) - nor do Java Date/Calendar/Timestamp types store them this way.
I need to compare these date/time values to input
parameters in finder methods.
Suggestions?Ah, yes. Well then... refer back to the above. :)
Bye the way, is there any reason for this limitation
in EJB-QL, or did they simply forget to include
date/time types to the spec?The EJB QL does not explicitly support any specific types beyond those "supported by an EJB's abstract schema", which is pretty much any Java type that can represent a compatible resource type. The reason for the noted "restriction" on date/time types, however, is (likely) due to the way the associated Java classes (not to mention the back-end resource), handle/represent these data internally and this gives the vendor an easily achievable minimal level of compliance for supporting these types.
I hope this helps.
ChristianRegards,
Tony "Vee Schade" Cook

The 'Date' data type

Hi there,
I,m trying to put together a UML Class model of a system i am going to be building using Rational Rose. I have noticed that there is a 'Date' data type within the program and i just have a few questions about it.
Previously i have always used 'Double' to store dates as i assumed this was the best practice as they can easily be manipulated. e.g. storing a date a member joined a video club, then you can workout how many days they have been a member.
Is this manipulation possible with the 'Date' data type?
Thanks
Adam

Use java.util.GregorianCalendar to do date arithmetic. You can for example use that class to ass or subtract a number of days or months from a date, with all the standard calendar rules (number of days per month, leap years etc.).
Jesper

Is there a date data type in java???

Similar Messages

Maybe you are looking for