System.out.println in Web Dynpro Java

I call System.out.println in some components in web dynpro java. But I cannot find the standard console output file of SAP J2EE Engine. Anyone know where is the location of standard output file?

Thanks Deepak. Your link blog is working.
Sreeni: I cannot find a start-up log file. Could you please tell me the real path?
Edited by: Nuttakorn Boonthamtanarung on Apr 1, 2010 6:58 AM

Similar Messages

How does System.out.println(). Work inside src.zip file !

Hello guyz,
I was just wondering how System.out.println() worked so i opened up the src.zip file and checked the source code. But could not understand it. As written i remember
"out is an object encapsulated in the System class."
Thats ok. But i could not understand the code.
    public final static PrintStream out = nullPrintStream();
    private static PrintStream nullPrintStream() throws NullPointerException {
     if (currentTimeMillis() > 0) {
         return null;
     throw new NullPointerException();
    }Also when i ran the DJ Decompiler it decompiled it to this:
public class One
     public static void main(String args[])
          System.out.println("hello world");
import java.io.PrintStream;
public class One
    public One()
    public static void main(String args[])
        System.out.println("hello world");
}Also, why does it need to import PrintStream ?

Peter__Lawrey wrote:
I was just wondering how System.out.println() worked so i opened up the src.zip file and checked the source code.This value is a place holder. This value is changed as soon as enough of the JVM is initialised for printing to work.
Also, why does it need to import PrintStream ? It doesn't, but it is used in the code so DJ is including it just in case.Sorry,
But i don't understand at all.

Web dynpro java application to update data in CRM system

Hello All,
I need to develop a web dynpro java application which will read and update data in CRM. How can I do this?
Thanks and Regards,
Deepti

First develop RFC / BAPIs to update and read in CRM system. Call those BAPIs from Web Dynpro Java application using AdaptiveRFC model.
Cheers,
~kranthi

System.out.println in Java Studio Creator 2

Where do my debugging messages sent to System.out.println go?
In my other installations of netbeans they went to a window in the IDE but I can't find them with JSC 2.

you can use System.out.println("") to write something in output (which in web applications it is web application log file)
also in creator you can use log("") to write something in output which again is the log file.
you can view the log file by right click on server / view log file

I have jave 7 I'm trying underscore option in String. as String strNum = "1000_000";System.out.println("..abc..." Integer.parseInt(strNum)); but getting error. could you please help in this?

Hi,
There is a new feature added in java 7 on integer, called as underscore '_" and it is working fine
if it is a normal int variable but if it is coming with String jvm throw the error.
if any one of you have java8 installed on your PC can you check this is working on that version.
int a = 1000_000;
String strNum = "1000_000";
// System.out.println("..abc..."+ Integer.parseInt(strNum));
System.out.println("a..."+a);
Thank you,
Shailesh.

what is your actual question here?
bye
TPD

Want the "System.out.println()" that is within the java stored procedure works?

hello
i write a java stored procedure,and put a line as "System.out.println(...)" within the procedure,after publish it,i can test it within the sqlplus by invoke following command:
SQL>set serveroutput on;
SQL>call dbms_java.set_output(....);
but when i test it within the jdeveloper9.0.3,it can't be print,why?
thank you!

You can try this:
DBMS_OUTPUT.enable(100000);
DBMS_JAVA.set_output(100000);
HTH,
Robert

Can't run java apps with System.out.println on any builder.

Hello,
I'm currently using Vista RC2, which is the immediate problem.
Classes with System.out.println won't launch the console window. As I'm a student and practicing on these steps, I do have quite a problem on my hands. I click on run, build succesfull, nothing happens.
I have tried Netbeans and Jcreator, and gave up on trying different builds, as I reckon I'll have to find some other way to counter this; any way to get println messages working in vista?

It is run as a desktop app, and other runs with commands such as JOptionPane do function, only the println windows don't appear at all. So I think JRE is installed and working.
I did notice there was one command for input where I'd be able to enter it at the bottom of Netbeans.
Like just now I clicked build and run for the following code
import java.util.*;
public class FirstProgram
    public static void main(String[] args)
        System.out.println("Hello out there.");
        System.out.println("I will add two numbers for you.");
        System.out.println("Enter two whole numbers on a line:");
        int n1, n2;
        Scanner keyboard = new Scanner(System.in);
        n1=keyboard.nextInt();
        n2=keyboard.nextInt();
        System.out.println("The sum of those two numbers is");
        System.out.println(n1+n2)
}Resulting in a brief flash of "input" in the output window (which is below the coding window) and it dissapears. But this also occurs when I don't include system scanner code.
Using commands in cmd
java -jar "C:\Users\Alegis\Netb\MyApp\dist\MyApp.jar"
Does not yield desired results either. Nothing happens.

Where do Java Embedding "System.out.println()" go? Where is Java Console?

Assume I embed a "Java Embedding" object in a BPEL process
and write the following Java code into it:
System.out.println("Hello BPEL");
where does this text go when executed? If I remember it well there must be somewhere an AppServer console.
But where is it exactly ?
Peter

Hi Peter,
The out stream is generally redirect into files in applications servers.
OC4J : $ORACLE_HOME/opmn/logs/<your_group>~<your_home_name>~<your_group>~1.log
WebSphere : $LOG_ROOT/SystemOut.log
JBoss : $SERVER_LOG_ROOT/server.log
Hope this helps.
Regards,
Raphaël
http://bpelsoa.blogspot.com

Java Beans System.out.println Log file

Helllo,
I have Forms 11.1.2 installed on linux. I developed a java bean and put some System.out.println() statements. The bean itself is working but where do i look for the debug statement logs that i am generating via System.out.println() statements.
Please let me know if you need more information, I will post asap.
thanks in advance,
Prasad.

Prabodh,
thanks, added the following line to the implementation class in java bean:
private final static Logger logger = Logger.getLogger(MyBean.class.getName());
and then in the init() method, i put
logger.info("Prasad .... in init);
Does this automatically goes into weblogic managed server WLS_FORMS (in my case) standard out?
Or do i need to do anything else, i know weblogic comes up with its own diagnostic logging and is famous for supressing other loggers.... just want to run this by you as well.
thanks,
Prasad,

How use system.out.println with a Java Swing Applet?

Hi guys,
I was just wondering what can I use to view output on the Java console with a Java Swing Applet?
At the moment I'm using a JTextArea within the Applet for debugging but I want output to appear in the browser java console but system.out.println doesn't work.
I'm viewing the Swing Applet on Netscape 4.7 browser.
Any ideas?

System.out.println()s work fine! I'm guessing that your problem is that you are looking at the wrong console window!
You're using the Java Plug-in, right? On Windows, go to your Control Panel and double click "Java Plug-in". You should find a checkbox option to "Show Java Console" - make sure this is checked. Next time you fire up you JApplet, you should see a Java Console window popup.
Hope this helps!

Connect to SQL server 2005 in web dynpro java

Hi,
I am new to web dynpro. I want to coonect to SQL server 2005 server from my simple application.
For that what and all the prerequisetion and what and all the steps to follow.
I have created a database and the table too. I have created the application too. But i am not able to connect to sql. what might be the problem. I tried to create the data source in visual administration. and written code in the view like this.
try {
                                               String userName = "jktuser";
               String password = "jkt12345";
               String url ="jdbc:microsoft:sqlserver://jktr3:50000;database=student";
               Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver ").newInstance();
               Connection con =DriverManager.getConnection(url, userName, password);
               System.out.println("Database connection established");
               Statement st = con.createStatement();
               String str = "select * from studentdata";
               ResultSet rs = st.executeQuery(str);
               while (rs.next()) {
               String str1 = rs.getString(1);
               wdComponentAPI.getMessageManager().reportSuccess(str1);
                                                String str2 = rs.getString(2);
               wdComponentAPI.getMessageManager().reportSuccess(str2);
               wdComponentAPI.getMessageManager().reportSuccess("sukces");
          } catch (Exception e) {
               wdComponentAPI.getMessageManager().reportWarning(e.toString());
And i am getting this error
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]End of stream was detected on a read.
Plz any one help me in this.
Regards,
H.V.Swathi
Edited by: H.V Swathi on Nov 21, 2008 6:46 AM
Edited by: H.V Swathi on Nov 21, 2008 7:16 AM
Edited by: H.V Swathi on Nov 21, 2008 7:17 AM

Hi,
I have tried all the steps to configure the remote connection but it is giving an error that says,
"Computer localhost does not exist on the network, or the computer cannot be configured remotely. Verify that the remote computer has the required Windows Management Instrumentation components and then try again. (SQLSAC)
ADDITIONAL INFORMATION:
An exception occurred in SMO while trying to manage a service. (Microsoft.SqlServer.Smo)
For help, click: http://go.microsoft.com/fwlink?ProdName=MicrosoftSQLServer&ProdVer=9.00.1399.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.InnerWmiException&LinkId=20476
Failed to retrieve data for this request. (Microsoft.SqlServer.SmoEnum)
For help, click: http://go.microsoft.com/fwlink?ProdName=MicrosoftSQLServer&LinkId=20476
The operation could not be completed. (WinMgmt)
BUTTONS:
OK
Please i welcome your valuable inputs.
Thanks & Regards
Swathi

Is this possible in Web Dynpro Java?

Hi,
Please check if this can be done in Web Dynpro Java...
public class TestFunction {
     boolean bool =false;
     boolean Test1()
          bool= true;
          return bool;
     void takeBool(boolean b){
          b=this.bool;
          System.out.println("The value of bool "+bool);
     public static void main(String[] args) {
          TestFunction tf = new TestFunction();
          boolean c=tf.Test1();
          tf.takeBool(c);
Regards
Kaushik Banerjee
Edited by: Kaushik Banerjee on Sep 1, 2010 8:00 PM

Further to what Faraz has said, Web Dynpro can be seen as an implementation of the Framework pattern.
Essentially you write normal Java code with access to various Java objects exposed/generated by the Web Dynpro Framework inside "hook" functions.
The Web Dynpro framework then calls your functions at various stages when the page renders and when actions are triggered.
For a high level understanding of this, not specific to Web Dynpro, research the concept of OO Frameworks pattersn.
for example [Article explaining frameworks|http://www.cs.wustl.edu/~schmidt/CACM-frameworks.html]
Here is an excerpt from the above article which highlights the major points
The primary benefits of OO application frameworks stem from the modularity, reusability, extensibility, and inversion of control they provide to developers, as described below:
Modularity -- Frameworks enhance modularity by encapsulating volatile implementation details behind stable interfaces. Framework modularity helps improve software quality by localizing the impact of design and implementation changes. This localization reduces the effort required to understand and maintain existing software.
Reusability -- The stable interfaces provided by frameworks enhance reusability by defining generic components that can be reapplied to create new applications. Framework reusability leverages the domain knowledge and prior effort of experienced developers in order to avoid re-creating and re-validating common solutions to recurring application requirements and software design challenges. Reuse of framework components can yield substantial improvements in programmer productivity, as well as enhance the quality, performance, reliability and interoperability of software.
Extensibility -- A framework enhances extensibility by providing explicit hook methods that allow applications to extend its stable interfaces. Hook methods systematically decouple the stable interfaces and behaviors of an application domain from the variations required by instantiations of an application in a particular context. Framework extensibility is essential to ensure timely customization of new application services and features.

BSP / Web-Dynpro (Java / Abap) what to use in this case ?

Hi all,
i have some questions about all this BSP/Web-Dynpro stuff. We have an application (for health care written in Visual Studio) out there at our customers. Some of these customers are using SAP as their backend system. So we've writte some backend functionality (a cash processing, additional reports, a special invoice system etc.etc.) in Abap and Abap-Objects. Actually we are planing a new release for this backend stuff which is using the normal SAP Gui.
Maybe we plan for the next release to convert our app to a Web based app and we discuss what SAP technology we should use for that.
Here are my questions :
- When and why should we use Web-Dynpro (Java) ?
- Can't we use BSP ?
- Is there any future for BSP ?
- When will Web-Dynpro for ABAP be released (actually we are not a Java Shop so Abap is prefered)?
Hope someone can answer my question.
Greetings
Henning

If you don't mind, I am going to terminate discussion of Web Dynpro ABAP here. It is not that I want to, but we are in a difficult position with this development, and can not really discuss it too much.
But, let me first make a few (last) comments:
(*) BSP is available since WebAS 610 (which is now nearly at the end of its lifetime). WebAS 620 is the main platform out there, with NW04 (WebAS 640) now shipping, and the next product is inevitably coming. If you keep in mind that SAP supports each release at least 7 years, and we will be shipping BSP in an upcoming release, you can see that with BSP you are not going to left stranded for many years to come.
(*) Web Dynpro Java is out and shipping. A very nice development environment. You can build nice things with it.
(*) Web Dynpro ABAP: it will become a very nice product as well. We should know :). But, it will definitely not ship on NW04 platform. Which unfortunately means the next great NW shipment (both naming and date is not available).
From our experience, most people seem to make their decisions based on the available Java versus ABAP skills in the shop. However, the other factor to look at is also "pixel perfect" rendering. Only with BSP can you influence the rendering. Web Dynpro is more a development platform for business applications, and as such they must conform to the designated model/concepts, etc.
brian

Attach to Mail using FileUpload UI in Web dynpro Java

Hi,
I need to send a file from my system as attachment with a mail in a web dynpro java application.
I am trying to implement it by uploading the file to server using FileUpload UI and then sending the file as attachment
using java mail api which is not working at the moment.
Can anyone please suggest possible solution for this. Is there anyother approach to implement this?
-- Arnab

I am using the following code to upload the file. Its not showing any error only the mail is sent without the attachment.
    IPrivateFormView.IFileUploadElement element = wdContext.currentFileUploadElement();
    InputStream text = null;
    int temp=0;
    try{
         File file = new File(element.getFilename().getResourceName());
         FileOutputStream out = new FileOutputStream(file);
         if(element.getFilename()!= null){
              text = element.getFilename().read(false);
              while((temp = text.read()) != -1){
                   out.write(temp);
         out.flush();
         out.close();
         String filePath = file.getAbsolutePath();
         wdContext.currentContextElement().setAttachFileExtension(filePath);
          msg.reportSuccess("File:" + filePath);
    }catch(Exception e){
And the following code to attach the file to mail
          MimeBodyPart bodyPart = null;
          Multipart mp = new MimeMultipart();
          try {
               bodyPart = new MimeBodyPart();
               bodyPart.setContent("Attached Mail","text/plain");
               mp.addBodyPart(bodyPart);
               //FileDataSource fds = new FileDataSource("http://dcwwdvsaprt02:50000/irj/go/km/docs");
               MimeBodyPart attachmentBodyPart = new MimeBodyPart();
               //attachmentBodyPart.setDataHandler(new DataHandler(fds));
               URL URLattachedFileName = new URL(wdContext.currentContextElement().getAttachFileExtension());
               attachmentBodyPart.setDataHandler(new DataHandler(URLattachedFileName));
               attachmentBodyPart.setFileName("Attachment");
               mp.addBodyPart(attachmentBodyPart);
          } catch (Exception e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();

Transport Web Dynpro Java applications on 7.4

Hi Experts
We have couple of web dynpro java applications running on DEV EP 7.4 system. Now we need to move them to Test/Prod. What are the options to move these? Please note we do not use NWDI, so transport thru NWDI is ruled out.
One option is to deploy these applications thru NWDS, but we would like to avoid it if possible.
Are there any other options for transport?
Thank you
Aakash

Thanks Jun
Any other option apart from Telnet?

System.out.println in Web Dynpro Java

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