What is meant by Idiomatic Java

What is meant by Idiomatic Java...

Google helps:
http://www.tools-conferences.com/tools/usa_2000/program/abstracts/langer2.html
It seems to focus on the semantics of a language feature, as opposed to its syntax. Design concepts and notions.

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What is meant by java

what is meant by java?
i am beginer plz helpme

[url #" style="display: block; background-image: url('http://upload.wikimedia.org/wikipedia/en/9/9d/Mart-mys.jpg'); width: 400px; height: 275px]
http://en.wikipedia.org/wiki/Martin_Mystery_%28animated_series%29
<quote>
Martin Mystery (2003) is an animated television series. It is loosely based on the Italian comic Martin Myst?re.
The series reimagines the title character Martin Mystery and his step-sister (his father married her mom) Diana Lombard as 16-year-olds attending Torrington Academy, a high school in Sherbrooke, Quebec. They work for the covert organization, "The Center", which secretly protects the people of Earth from extraterrestrial and supernatural threats. Not everyone who works for the organization is human. The short and green-skinned Billy is one of Martin's best friends. Java works in the cafeteria of Diana and Martin's school and is a caveman from 200,000 years ago.
</quote>

What is meant by a wrapper class ?

What is meant by a wrapper class ?

java uses simple types such as int and char. these data type r not part of object hierarchy. they r passed by value to methods and cannot b directly passed by reference. there is no way for 2 methods to refer to the same instance of an int. at times u will need an object representation for one of these simple types.wrapper classes encapsulate or wrap the simple types within a class. thus, they r commonly referred to as type wrapper.
java provides classes that correspond to each of the simple types

What is meant by EDI(Electronic data excahange)

what is meant by EDI(Electronic data excahange).my pm has given us new project on EDI based project.Iam not knowing EDI can any body tell or give any link to tutorial.

EDI is the predecessor to XML. It is a document format that is used to pass data between disparate computer systems.
There are many different EDI file formats (like X12) as well.
Did you try looking up Java EDI on Google?

What is meant by a resource leak ?

What is meant by a resource leak ?

Garbage collection manages only memory, not other system resources. If your Java program has plenty of free memory, garbage collection will not be triggered automatically. Usually, however, there are other resources that are more limited than memory. For example, all OSes have limits on the number of sockets, file handles, etc. that can be open. Sometimes this limit is quite low. This is true even on a desktop, e.g. if your system has 128KB of memory, your Java program can easily allocate all the available file handles without coming near to filling up the heap. If this happens, your Java program will fail. This is what we call a resource leak; the unintentional maintenence of references to non-memory resources.
This is why it is important in Java to explicitly manage non-memory resources. Classes which utilize non-memory resources should provide ways to explicitly allocate/deallocate those resources, independent of garbage collection. For example Socket, InputStream and OutputStream each provide explicit close() methods for deallocation of file descriptors, Window provides a dispose() method to free the window handle, etc. The way to properly use these classes is to allocate using the constructor, then deallocate using the appropriate method (deallocation is preferably done in a finally{} block, so it will execute whether or not an exception is thrown during use). These classes do release these non-memory resources in their finalize() method, but remember that the finalizer only gets called by the garbage collector, and if the object is never collected, it will never be finalized, hence will never release the resources.

What is meant by JMX

What is meant by JMX

JMX[TM] Technology are the "Java Management Extensions" originally defined by JSR 3.
More info here:
http://java.sun.com/products/JavaManagement
here:
http://blogs.sun.com/roller/page/jmxetc?entry=looking_for_jmx_overview_examples
and there:
http://blogs.sun.com/roller/page/jmxetc?entry=where_can_i_get_my
Note that the JMX Technology is being quite widely used - so if you're wondering
what is JMX in, say, the context of an Application Server, then you should probably
look at the documentation of that Application Server too in order to understand
how and for what purposes it uses the JMX Technology.
Hope this helps,
-- daniel

What is meant by?

MSB|=LSB
and
LSB &=oxooff
here what is meant by '|' and '&'

Your questions are super-basic.
Please carefully read all of this:
http://java.sun.com/docs/books/tutorial/java/index.html

What is meant by costing key?

Dear Experts ,
while releasing the billing document to accounts , i am getting error like
Valuation with material cost estimate: error, The system looked for the material cost estimate using costing key "002", as defined in the Customizing settings for CO-PA, incomplete due to FI/CO interface
what is meant by costing key?
regards
rajakarthik

Hi,
In Costing based Profitability analysis you define costing keys. A costing key is a set of access parameters which are used in valuation to determine which data in Product cost planning should be read. In the costing key you attach the costing variant.
In the costing key you specify whether the system should read the current standard cost estimate, the previous standard cost estimate or the future standard cost estimate or a saved cost estimate.
The configuration settings to determine this costing key is as follows:
Assign costing keys to the products u2013 Three costing keys can be attached to a single product for a specific point of valuation, record type, plan version.
Assign costing keys to Material types
Assign costing keys to any characteristics u2013 You can use your own strategy to determine the costing keys. This is through user defined assignment tables.
regards,
Santosh kumar

What's the difference between Java SDK and the Enterprise Edition?

What's the difference between Java SDK and the Enterprise Edition? Are they both free?

both r free but they are used in diffrent applications. sdk are used for simple apps that run on your computer while j2e (enterprise edition) are ment for large distributed computer systems that include servers and such. if you don't know the diffrence you probably wont need the the j2e, only the sdk.

Dispute Case Key (Replicated) (0DPM_D10); what is meant by Replicated?

Hi everyone,
I am working on implementing FSCM Dispute Managment module. I have some questions regarding the new standard content provided by SAP for this:
Earlier I have seen clients using the Stanadard InfoSet 0DPM_I0 for all the Dispute's reporting as it combines data from AR, Dispute Case key and 0Customer. But now I am seeing a bunch of new objects like 0DPM_M10, 0DPM_M20, 0DPM_C10, 0DPM_D10, 0DPM_DCAS_10 etc. provided by SAP as standard content.
Does any one have any experience with this new content; can anyone explain me how this new content is useful. My client is reluctant against using the standard InfoSet as its is built on two DSO's; I have suggested to build a cube on top of them and can still use an InfoSet to combine AR line items, Disputes, Dispute case key and Customer. Correct me if I am wrong with thid statement.
Also please let me know what is meant by a Replicated DSO.
Any comments or suggestions will be greatly appreciated.
Thanks & Regards,
SRV

There are a few things to consider:
     1) The data is stored in deserialized form until it is read. The first read will deserialize the data.
     2) There is some overhead per-entry. 750MB/(3,000,000-30) = ~250 bytes per entry. Some portion of this is attributable to the per-entry overhead.
     3) How did you measure memory usage? Usually invoking <tt>System.gc()</tt> before measuring heap usage will clear garbage but is not guaranteed.
     Jon Purdy
     Oracle

What is meant by criteria of Updateability in MDM Import manager

Hi,
What is meant by criteria of Updateability in MDM Import manager? i read some information, but i could understand, it says original data source be updateble. what is meant by Original data source.?
what is the use of option "Read-only" in Import manager logon screen.
Thanks

Hello Ankam,
You can check the Read-only option to prevent MDM from updating your data source.
Kindly see the below information on "DATA SOURCE UPDATES"
DATA SOURCE UPDATES
Some MDM Import Manager operations require that the original data source be updateable, thereby allowing new fields and/or entire new tables u2013 and the corresponding data values for each record u2013 to be automatically added to the data source before further processing.
Other operations simply create virtual fields in the MDM Import Manageru2019s workspace, although if the data source happens to be updateable, some of these operations instead add the new fields to the original data source as well.
NOTE ►► Updating the data source when possible allows you to
perform additional operations on the new fields as if they were part of
the original source data, and also use them as record matching fields.
NOTE ►► Fields that are added only if the data source is updateable
can be deleted automatically by the MDM Import Manager when you
exit or switch data sources based on the setting of the Delete Created
Fields on Exit configuration option.
Updateable Data Sources
Whether or not a data source is updateable depends upon the following:
u2022 Source type. The source Type must permit the MDM Import Manager to update its schema and insert the additional fields of data; some supported types are updateable and some are not.
u2022 Media. The media on which the data source resides must itself be updateable. If the media on which the data source resides is readonly, such as a CD-ROM, the data source cannot be updated.
u2022 Permissions. You must have the proper file system permissions to update the file, or the proper DBMS permissions to update the schema of the database.
u2022 Read-only option. You cannot have checked the Read-Only option, which prevents MDM from updating the data source even if the other conditions would otherwise permit it.
NOTE ►► The Read-Only option is: (1) enabled for source types that
can be updated (Access, Oracle, SQL Server, and XML); (2) disabled
and unchecked for those that use Access as an updateable staging
area (Delimited Text and Fixed Text); and (3) disabled and checked for
those that cannot be updated (Excel and ODBC).
NOTE ►► When the data source is SQL Server, the table names in
the database must not contain spaces; otherwise any operation that
would update the data source will fail.
Hope this helps.
Regards,
Vikas

Do I need Java 8 or should i disable it? What happens if i disable it? And what is the difference between Java and Java Runtime?

Do I need Java 8 or should I disable it? What happens if i disable it? And what is the difference between Java and Java Runtime?

There's no difference. They're both runtime plug-ins (they run when an app calls for Java functions).
You only need Java if you either have Java apps on your Mac that won't run without having it installed, or you use trusted web sites that require Java to function (getting fewer and far between). Otherwise, you have no need for it at all.

What the Enviroment required for java databases programs?

Hi guys
What the enviroment required for java databases programs?
If I have oracle of version 9i and java 1.4.1 platform
do I need Jdeveloper platform ?

What the enviroment required for java databases programs?What do you mean by "environment"?
f I have oracle of version 9i and java 1.4.1 platformYou just need to download Oracle's 9i JDBC driver (ojdbc14.jar) and put that in your CLASSPATH. Then write JDBC code to connect to Oracle and issue SQL commands.
do I need Jdeveloper platform ?No, JDeveloper is an IDE. Not required.
Why Java 1.4.1? We're up to Java 6 now. You're two major versions of the JDK behind.
%

What is meant by 'Business Area'

Hi all
what is meant by 'Business Area' in discoverer?
Because i have installed BI Tools Discoverer Admin and Desktop
but unable to figure out what Business Area atcually is!!!!
Thanks in advance
Regards

Hi,
what is meant by 'Business Area' in discoverer?
Business area is nothing but a set of folders specified to that responsibility.
Seems your novice so to know concepts of BI and develop discoverer reports follow this user guides which can be downloaded from oracle site.
[http://download-west.oracle.com/docs/html/B10270_01/toc.htm]
[http://download.oracle.com/docs/cd/B14504_01/dl/bi/B10272_01/toc.htm]
Hope this helps you,if anything more feel free to ask we are ready to help you.You will find Discoverer interesting as you go on working with it.Have a nice time working on it.
Best Wishes,
Kranthi.
Edited by: Kranthi.K on Jun 16, 2009 7:29 AM

What is wrong in this java code?

Can someone please tell me what is wrong in this java code?
/* The program is intended to start animating text at the click of a button, pause it at another click and resume at the next click. It should continue like this */
import javax.swing.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
public class TextAnime implements Runnable
JFrame frame;
boolean flag;
Thread animeThread;
JLabel label;
String[] textArray;
public TextAnime()
flag = false;
animeThread = new Thread(this);
frame = new JFrame("Animate Text");
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
frame.setLayout(gbl);
JButton button = new JButton("Start");
label = new JLabel("Stopped");
textArray = new String[5];
String textArray1[] = {"Programmer", "SportsMan", "Genius", "Friend", "Knowledgable"};
for(int ctr = 0; ctr<5 ; ctr++)
textArray[ctr] = textArray1[ctr];
gbc.weightx = 1;
gbc.gridx = 0;
gbl.setConstraints(button,gbc);
frame.getContentPane().add(button);
ButList bl = new ButList();
button.addActionListener(bl);
gbc.gridx = 1;
gbl.setConstraints(label,gbc);
frame.getContentPane().add(label);
frame.setSize(200,150);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
frame.setVisible(true);
public class ButList implements ActionListener
public void actionPerformed(ActionEvent evt)
if(flag == false)
flag = true;
animeStart();
else
flag = false;
//animeStop();
public synchronized void animeStart()
animeThread.start();
Thread newThread;
newThread = Thread.currentThread();
newThread.notify();
public void animeStop()
animeThread.interrupt();
public void run()
int i = 0;
try
while(i == i)
if(i==5)
i=0;
label.setText(textArray);
animeThread.sleep(1000);
i++;
if (flag == false)
animeThread.wait();
catch(InterruptedException ie)
label.setText("Stopped");
public static void main(String args[])
TextAnime ta = new TextAnime();
Please tell me if this can be written in a more simpler manner. Also please correct this code. I am tired after trying many times.

When I fix your error, compile and run it, I get this exception:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalMonitorStateException
     at java.lang.Object.notify(Native Method)
     at cruft.TextAnime.animeStart(TextAnime.java:81)
     at cruft.TextAnime$ButList.actionPerformed(TextAnime.java:63)
     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
     at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
     at java.awt.Component.processMouseEvent(Component.java:6038)
     at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
     at java.awt.Component.processEvent(Component.java:5803)
     at java.awt.Container.processEvent(Container.java:2058)
     at java.awt.Component.dispatchEventImpl(Component.java:4410)
     at java.awt.Container.dispatchEventImpl(Container.java:2116)
     at java.awt.Component.dispatchEvent(Component.java:4240)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
     at java.awt.Container.dispatchEventImpl(Container.java:2102)
     at java.awt.Window.dispatchEventImpl(Window.java:2429)
     at java.awt.Component.dispatchEvent(Component.java:4240)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
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What is meant by Idiomatic Java

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