Does Java have APIs for statistical analysis?

Hi Java Experts
I want to develop a Java program which can help users to analyse their stock investment. Here I have two questions
1) How can I wrap my finished Java program as a XXX.exe? So users can install my program by executing it
2) Does Java have any APIs for statistical analysis?
Thank you very much for your help!
ViolaIT

1) How can I wrap my finished Java program as a
XXX.exe? So users can install my program by
executing ithttp://onesearch.sun.com/search/onesearch/index.jsp?qt=java+exe&qp_name=null&subCat=siteforumid%3Ajava54&site=dev&dftab=siteforumid%3Ajava54&chooseCat=javaall&col=developer-forums

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Why does Java have such a large footprint?

I've been curious about this topic for a while, but I haven't ever looked into this to any depth. I also posted this to stackoverflow but haven't gotten any solid responses so far:
http://stackoverflow.com/questions/1107991/why-does-java-have-such-a-large-footprint
Java - or at least Sun's Hotspot JVM - has long had a reputation for having a very large memory footprint. What exactly is it about the JVM that gives it this reputation? I'd be interested in a detailed breakdown: how much memory goes to the runtime? (The JIT? The GC/memory management? The classloader?) Anything related to "auxiliary" APIs like JNI/JVMTI? The standard libraries? (Which parts get how much?) Any other major components?
I realize that this may not be straightforward to answer without a concrete application plus VM configuration, so just to narrow things down at least somewhat: I'm primarily interested in default/typical VM configurations, and in a baseline console "Hello world" app as well as any real-world desktop or server app. (I'm suspecting that a substantial part of the JVM's footprint is largely independent of the app itself, and it is in this part that I'd like to zoom in, ideally.)
I have a couple of other closely related questions:
Other similar technology, such as .NET/mono, don't exhibit nearly the same footprint. Why is this the case?
I've read somewhere on the intarwebs that a large portion of the footprint is due simply to the size of the standard libraries. If this is the case, then why is so much of the standard libraries being loaded up front?
Are there any efforts (JSRs, whatever) to tame the memory footprint? The closest thing I've come across is a project to reduce the on-disk footprint of the JVM [1] and to modularize the standard library [2].
I'm sure that the footprint has varied over the past decade or so with every new version of Java. Are there any specific numbers/charts chronicling precisely how the JVM's footprint has changed?
[1] http://blogs.sun.com/jtc/entry/reduced_footprint_java_se_bringing
[2] http://blogs.sun.com/theplanetarium/entry/project_jigsaw_modularizing_jdk_7

yangzhang wrote:
I've been curious about this topic for a while, but I haven't ever looked into this to any depth. I also posted this to stackoverflow but haven't gotten any solid responses so far:
http://stackoverflow.com/questions/1107991/why-does-java-have-such-a-large-footprint
Java - or at least Sun's Hotspot JVM - has long had a reputation for having a very large memory footprint. What exactly is it about the JVM that gives it this reputation? I'd be interested in a detailed breakdown: how much memory goes to the runtime? (The JIT? The GC/memory management? The classloader?) Anything related to "auxiliary" APIs like JNI/JVMTI? The standard libraries? (Which parts get how much?) Any other major components?
Presumably versus some other VM. I would suppose the fact that much of the VM is written in java has something to do with it.
I realize that this may not be straightforward to answer without a concrete application plus VM configuration, so just to narrow things down at least somewhat: I'm primarily interested in default/typical VM configurations, and in a baseline console "Hello world" app as well as any real-world desktop or server app. (I'm suspecting that a substantial part of the JVM's footprint is largely independent of the app itself, and it is in this part that I'd like to zoom in, ideally.)
I have a couple of other closely related questions:
Other similar technology, such as .NET/mono, don't exhibit nearly the same footprint. Why is this the case?
Not sure I agree with that. What size do you see with a .Net app that uses 3.0/3.5?
I've read somewhere on the intarwebs that a large portion of the footprint is due simply to the size of the standard libraries. If this is the case, then why is so much of the standard libraries being loaded up front?
Good question. There is a feature that allows multiple VMs to use the same memory footprint version of the loaded libraries. That is a new feature and it isn't clear to me if it covers the entire API. I do not know if that is dynamically built.

Error in the latest Java comm api for Linux

installed latest Java comm api for Linux, tried test application for the Sun package:
$ java SimpleRead
Exception in thread "main" java.lang.ExceptionInInitializerError
at SimpleRead.main(SimpleRead.java:67)
Caused by: java.lang.NullPointerException
at javax.comm.CommPortIdentifier.findConfFile(CommPortIdentifier.java:199)
at javax.comm.CommPortIdentifier.<clinit>(CommPortIdentifier.java:117)
... 1 more
What deis this message mean? How to make you serial port support work?

and what does this error message mean??
The package was installed accordingly to "Java(tm) Communications API Linux Installation Instructions":
$ls /usr/lib/libLinuxSerialParallel.so
/usr/lib/libLinuxSerialParallel.so
$env|grep CLASS
CLASSPATH=<..skipped..>:/opt/commapi/jar/comm.jar:/opt/commapi/jar/commtest.jar
$ ls /opt/jdk1.5.0_04/jre/lib/javax.comm.properties
/opt/jdk1.5.0_04/jre/lib/javax.comm.properties
What else does it need?

When does java deallocate memory for objects;

um i'm working on a midp application that is very memory consuming. i would like to optimise it and make it just the oposite of what it is. now i would like to know when does java dellocate memory for an object, is it when it can find no more references to that object? or some other time, well i know its not when it can find no more references to that object because i've already tried that.
or to make things simpler is there any explicit way to make java deallocate memory for a specific object, like if i have a thread, which is executing a while loop, and i want java to end the thread and free its memory. is there any way to do this?

I happen to have quite some J2ME experience and it's not overly wise to count on extensive garbage collection. The garbage collector in limited device VMs isnt as advanced as it's big brothers. Try to avoid excessive object allocation and reuse instances whenever possible.
As for garbage collection, objects will be garbage collected if they can no longer be reached by any of the active application threads and if the garbage collectors deems it necessary to collect garbage, which will probably be when free heap memory becomes sparse or when there's some idle time in your application.

Getting error ORA-20001: This person does not have preferences for the sele

*) I got user_id by following query
SELECT USER_ID, USER_NAME, FND_USER.*
from FND_USER where user_name = '205174';
*) resource_id by following query:
select * from APPS.PA_PROJECT_ASSIGNMENTS where RESOURCE_ID in (select RESOURCE_ID from APPS.PA_RESOURCES_DENORM where PERSON_ID
in (select PERSON_ID from APPS.PER_ALL_PEOPLE_F where EMPLOYEE_NUMBER= 205173) ) ;
*) person_id by following query:
select * from APPS.PA_RESOURCES_DENORM where PERSON_ID in (select PERSON_ID from APPS.PER_ALL_PEOPLE_F where EMPLOYEE_NUMBER= 205173) ;
and
Hi,
When I am running following query to submit timesheet, getting following warning msg
anonymous block completed
ORA-20001: This person does not have preferences for the selected effective date
Following is query
set serveroutput on size 1000000
DECLARE
l_tbl_messages hxc_message_table_type;
l_message fnd_new_messages.message_text%type;
i pls_integer;
l_app_blocks hxc_block_table_type := hxc_block_table_type();
l_app_attributes hxc_self_service_time_deposit.app_attributes_info;
l_time_building_block_id number;
l_new_timecard_id number;
l_new_timecard_ovn number;
l_bb_id number;
l_resource_id hxc_time_building_blocks.resource_id%TYPE := 3595; -- XPCPAY
l_start_time hxc_time_building_blocks.start_time%TYPE := fnd_date.canonical_to_date('2011/10/17 00:00:00');
l_measure hxc_time_building_blocks.measure%TYPE := 1;
l_element_type_id varchar2(80) := 'ELEMENT - 50809'; -- Jury Duty
l_comment_text hxc_time_building_blocks.comment_text%TYPE := '';
l_deposit_process hxc_deposit_processes.NAME%TYPE := 'OTL Deposit Process';
l_retrieval_process varchar2(250) := 'BEE Retrieval Process';
BEGIN
fnd_global.apps_initialize ( user_id => 3850 -- XPCPAY
, resp_id => 3595 -- Self Service Time
, resp_appl_id => 809 -- HXC
hxc_timestore_deposit.create_time_entry ( p_measure => l_measure
, p_day => l_start_time
, p_resource_id => l_resource_id
, p_resource_type => 'PERSON'
, p_comment_text => l_comment_text
, p_deposit_process => l_deposit_process
, p_app_blocks => l_app_blocks
, p_app_attributes => l_app_attributes
, p_time_building_block_id => l_bb_id
hxc_timestore_deposit.create_attribute ( p_building_block_id => l_bb_id
, p_attribute_name => 'Dummy Element Context'
, p_attribute_value => l_element_type_id
, p_deposit_process => l_deposit_process
, p_app_attributes => l_app_attributes
hxc_timestore_deposit.execute_deposit_process ( p_validate => TRUE
, p_app_blocks => l_app_blocks
, p_app_attributes => l_app_attributes
, p_messages => l_tbl_messages
, p_mode => 'SUBMIT'
, p_deposit_process => l_deposit_process
, p_retrieval_process => l_retrieval_process
, p_timecard_id => l_new_timecard_id
, p_timecard_ovn => l_new_timecard_ovn
-- OUTPUT MESSAGES --
DBMS_OUTPUT.put_line ('l_new_timecard_id = ' || l_new_timecard_id);
DBMS_OUTPUT.put_line ('l_new_timecard_ovn = ' || l_new_timecard_ovn);
if (l_tbl_messages.COUNT <> 0) THEN
i := l_tbl_messages.FIRST;
LOOP
EXIT WHEN (NOT l_tbl_messages.EXISTS(i));
l_message := fnd_message.get_string ( appin => l_tbl_messages(i).application_short_name
, namein => l_tbl_messages(i).message_name
DBMS_OUTPUT.put_line (l_tbl_messages(i).message_name);
DBMS_OUTPUT.put_line (l_message);
i := l_tbl_messages.NEXT(i);
END LOOP;
rollback;
else
commit;
end if;
exception
when others then
DBMS_OUTPUT.put_line(SQLERRM);
END;
/

Please check the following MOS notes:
ORA-20001: This Person Does Not Have Preferences For the Selected Effective Date [ID 876324.1]
ORA-20001: This Person Does Not Have Preferences For The Selected Effective Date [ID 761470.1]
Troubleshooting Guide for HRMS API Errors - ORA-20001 and APP Errors [ID 152259.1]
''This Person Does Not Have Preferences For The Selected Effective Date'' Message [ID 287581.1]
Diagnostics - Setup - Time and labour Person - Test failed [ID 397214.1]
Cheers,
ND
Use the "helpful" or "correct" buttons to award points to replies / Mark the thread as answered, if your question is answered.

Does java have picture box?

I am newbie in building gui with java. just migrate from using vsstudio.
I see people use matisee to dragndrop things
but what i want to know now. is
does java have picturebox? and can i set location of each component like
x.setLocatioN(x,y) on form?
ummm, .. is it good to use matisee?
thks

Hi. What do your initials stand for, Tom Hanks Kevin Susan?
You can use a JLabel to show a graphic in Java. Use its setIcon method.
You can use setBounds to position components, but you must set the layout of the parent component to null using setLayout. However, it is recommended not to do this, as it isn't very flexible. Instead, learn about and use [url java.sun.com/docs/books/tutorial/uiswing/layout/using.html]layout managers.
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About Java Communication API for Windows

hi
I'm studying Serial Communication in university.
I'd like to know the reason why we can't downlaod Java Communication API for Windows.
I confirmed Comm for Linux and Soralis, but I can't find Comm for Win.
Please tell me the reason if someone know.

For no particular reason Sun stopped supporting the windows version
of that package. I use rxtx which happens to allow for much faster
communication too.
The interface is identical to Sun's version, just the package differs: "gnu.io".
kind regards,
Jos

User XIRWBUSER does not have authorization for message monitoring

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Regards,
Nick

Hi Nick,
Transaction PFCG. Enter the role you wish to check (SAP_XI_RWB_SERV_USER) and click on the display button.
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http://help.sap.com/saphelp_nw04s/helpdata/en/52/67151e439b11d1896f0000e8322d00/frameset.htm
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Hi,
We are in BI 7.0 and want to display the data in the cube that I created and loaded data to. In RSA1, I am do a right click on the cube and select "display data". I am getting to selection screen and after selecting the output fields and executing, I am getting the following error:
User XXX does not have authorization for InfoProvider ZFREDC
The long text is like this:
You do not have sufficient authorization
Message no. EYE007
Diagnosis
You do not have sufficient authorization for the requested data records.
Procedure
Either select other data or get the required authorizations from your administrator.
I did a authorization check in SU53 after I got the error and it says the last authorization check was successful.
Can somebody suggest me what to do. If there are any authorization objects that I need to have in my role?
Thanks.

Hi,
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Regards, Patrick Rieken.
Message was edited by:
Patrick Rieken - BI-Formance B.V.

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Kenneth

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Hope this helps

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Does Java have APIs for statistical analysis?

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