Code to generate java program

hello,
i am studying msc(information systems) 2 years course.
this is my first semister.i am doing prof\ject in java.
TITLE:Designing editor for java in java.
I want to know how to compile a program written in the editor.i will feel very much happy,if u could tell me the suggestion.And alse running the class file.
thanking you...

Take a gander at the java.lang.Runtime class - in particular the exec method. Invoke the compiler like you would on a DOS or Unix command line.
You'll have to use a ClassLoader to make the JVM load - or reload, if it's already known to the JVM - the resulting class file.

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Calling C code (exe ) from Java program

Hi all,
kindly help in giving a solution for calling C code (exe ) from Java program, i will be very thank full to u if any body can help in sending a code example
bye

You might need to consume the io operations on the Process...
An excerpt from java.lang.Process:
All its standard io (i.e. stdin, stdout, stderr) operations will be redirected to the parent process through three streams (Process.getOutputStream(), Process.getInputStream(), Process.getErrorStream()). The parent process uses these streams to feed input to and get output from the subprocess. Because some native platforms only provide limited buffer size for standard input and output streams, failure to promptly write the input stream or read the output stream of the subprocess may cause the subprocess to block, and even deadlock.

Java code to read Java Program

Hi,
Is there any standard api to retrieve the java program's class name, method name, its parameter, code etc...
My req is to write a java program that takes any java programme file as input and returns the class name, method name, parameter name and type etc...
Thanks,
Santhosh.

Take a look at the annotation processor atp in the standard Java toolkit. It provides a framework for scanning Java source files visiting types, fields etc.
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XML Schema Class Generator Problem compiling generated java programs

Hi,
I ran oracg on the po.xsd schema from X3Cs XML Schema Part 0: Primer which successfully generated the java codes. I ran into problems when I compile the generated classes. Here's what I'm getting:
C:\oracle\xml\xdk\demo\java\classgen\Po2>javac -classpath ".;C:\oracle\xml/lib/xmlparserv2.jar;C:\oracle\xml/lib/xschema.jar;C:\oracle\xml/l
ib/classgen.jar;.;C:\Program Files\VicunaJ521\java\lib\collections.jar;C:\Program Files\VicunaJ521\java\lib\vicunalite.jar;C:\Program Files\
XConverter\XConverter.jar;C:\Program Files\XConverter\IDLGenerator.jar; c:\jdk1.2.2\lib\dt.jar;c:\jdk1.2.2\lib\jvm.jar;c:\jdk1.2.2\lib\tools
.jar;c:\oracle\ora81\jdbc\lib\classes12.zip;c:\oracle\ora81\jdbc\nls_charset12.zip;C:\oracle\xml\lib\classgen.jar;C:\oracle\xml\lib\xmlparse
rv2.jar" *.java
.\types\PurchaseOrderType.java:75: Type expected.
public void addComment(null.Comment thecomment)
^
.\types\Items.java:141: Type expected.
public void addComment(null.Comment thecomment)
^
2 errors
Running the demo which comes with oracles version of po.xsd was OK. What's the difference between the po.xsd from oracle and the po.xsd from W3C? Are there any W3C recommendation for XML Schema not supported by Oracle's class generator?

Which po.xsd do you use? Would you post it?
Thanks. Here's the copy of the po.xsd from the W3C website. (http://www.w3.org/TR/xmlschema-0/#po.xsd)
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:annotation>
<xsd:documentation xml:lang="en">
Purchase order schema for Example.com.
Copyright 2000 Example.com. All rights reserved.
</xsd:documentation>
</xsd:annotation>
<xsd:element name="purchaseOrder" type="PurchaseOrderType"/>
<xsd:element name="comment" type="xsd:string"/>
<xsd:complexType name="PurchaseOrderType">
<xsd:sequence>
<xsd:element name="shipTo" type="USAddress"/>
<xsd:element name="billTo" type="USAddress"/>
<xsd:element ref="comment" minOccurs="0"/>
<xsd:element name="items" type="Items"/>
</xsd:sequence>
<xsd:attribute name="orderDate" type="xsd:date"/>
</xsd:complexType>
<xsd:complexType name="USAddress">
<xsd:sequence>
<xsd:element name="name" type="xsd:string"/>
<xsd:element name="street" type="xsd:string"/>
<xsd:element name="city" type="xsd:string"/>
<xsd:element name="state" type="xsd:string"/>
<xsd:element name="zip" type="xsd:decimal"/>
</xsd:sequence>
<xsd:attribute name="country" type="xsd:NMTOKEN"
fixed="US"/>
</xsd:complexType>
<xsd:complexType name="Items">
<xsd:sequence>
<xsd:element name="item" minOccurs="0" maxOccurs="unbounded">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="productName" type="xsd:string"/>
<xsd:element name="quantity">
<xsd:simpleType>
<xsd:restriction base="xsd:positiveInteger">
<xsd:maxExclusive value="100"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
<xsd:element name="USPrice" type="xsd:decimal"/>
<xsd:element ref="comment" minOccurs="0"/>
<xsd:element name="shipDate" type="xsd:date" minOccurs="0"/>
</xsd:sequence>
<xsd:attribute name="partNum" type="SKU" use="required"/>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>

<xsd:simpleType name="SKU">
<xsd:restriction base="xsd:string">
<xsd:pattern value="\d{3}-[A-Z]{2}"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:schema>

Code to compile java program

hello,
i am studying msc(information systems) 2 years course.
this is my first semister.i am doing prof\ject in java.
TITLE:Designing editor for java in java.
I want to know how to compile a program written in the editor.i will feel very much happy,if u could tell me the suggestion.And alse running the class file.
thanking you...

Hi rajesh!
First you need a java development kit (jdk).
If you didn't get it yet you can download the actual version on this page (just search for "download").
If you've installed the jdk make sure that the path where you installed your jdk is set to your systems path value (windows)
you can put it in by editing your autoexec bat or by giving the following order to your dos box:
1.) PATH (returns the actual path settings)
2.) SET PATH old values, [...]\jdk\bin
After having done this you should reboot your system.
Now you can change the directory to your programs path and call:
JAVAC yourfile.java
this compiles your program
JAVA yourfile
(without any file extension!!) runs your program
It might be useful to download the API Documentation, where the jdk tools are all descripted!!
hope it helps,
Thof

Open Windows Media Player through Java program

I need to open a video and some music in windows media player... but I don't know how....
Can anybody help???

I hav implemented windows media player using JSP....i am sending code
However for java program i do not know
<html>
</body>

      <table border='0' cellpadding='0' align="left">
      <tr><td>
      <OBJECT id='mediaPlayer' width="320" height="285"
      classid='CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95'
      codebase='http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701'
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      <param name='animationatStart' value='true'>
      <param name='transparentatStart' value='true'>
      <param name='autoStart' value="true">
      <param name='showControls' value="true">
      <param name='loop' value="true">
      <EMBED type='application/x-mplayer2'
        pluginspage='http://microsoft.com/windows/mediaplayer/en/download/'
        id='mediaPlayer' name='mediaPlayer' displaysize='4' autosize='-1'
        bgcolor='darkblue' showcontrols="true" showtracker='-1'
        showdisplay='0' showstatusbar='-1' videoborder3d='-1' width="320" height="285"
        src="c:\abc.wmv" autostart="true" designtimesp='5311' loop="true">
      </EMBED>
      </OBJECT>
      </td></tr>
      
    
        <tr><td align='center'>
        <a href="http://servername/path/to/media.file" style='font-size: 85%;' target='_blank'>Launch in external player</a>
        
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</body>
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How to run java programs from a master java program?

Hello,
I have several java programs which run from the command prompt. I am seeking help with code for starting java programs from within a java program. For example, a program called master.java works something like this:
import java.*;
create connection pool
create variables and result sets
start/run slave1.java (var1, var2);
start/run slave2.java (var3, var4, var5);
start/run slave3.java (var1, var4);
end of program master.java
Each of the slave.java programs will run for up to an hour. I do not want the master.java program to pause for each slave program to stop. Instead, the master program will keep running and multiple slave programs will be running simultaneously with the master program. When a slave program starts, it is on its own. Also, if possible, I would like to have each of these slave.java programs open in a new separate command window, so I can observe each slave program running in separate windows.
Any suggestions for code or helpful documentation are greatly appreciated.
Thank you,
Logan

Thank you all.
At the bottom of master.java I have successfully started a batch file with these lines:
String jcmd = "cmd.exe /c start c:/data/simulations/MsgViewCount2.bat";
Process proc = Runtime.getRuntime().exec(jcmd);
But I still cannot get a java program to start. Here is one variation I have tried:
String [] cmdArray = new String[2];
cmdArray[0] = "java";
cmdArray[1] = "slave1";
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec(cmdArray);
This compiles, and no errors occur, but nothing happens.
Regarding this comment:
Why Runtime.exec? Either make the slaves Runnable or
just call their main() methods.
Oh, I see. Sepearate output. :PNone of the slave.java programs have any output.
Thanks again.

How to execute an external executable in my java program?

hi,
i want to write a java program to execute some external executables.
for example, i had an executable which takes a string as its input parameter, and:
it writes to stdout a string : "[stdout] hello, "+parameter+"!";
it writes to stderr a string : "[stderr] hello, "+parameter+"!".
and it exits with an error code 1.
my java program looks like this:
public class Test {
public static void main(String[] args)
throws Exception {
    String inputParameter = "heavyz";
    String stdoutOutput = null;
    String stderrOutput = null;
    int exitCode;
    // Do something here to launch the executable,
    // providing inputParameter as its input,
    // getting its stdout output to String stdoutOutput,
    // and its stderr output to String stderrOutput,
    // and its exit code to int exitCode.
    return;
}anybody can help me to complete the program above?
thanks a lot.
heavy ZHENG

check out Runtime.getRuntime().exec();

Passing argument to shell script from java program

str="/bin/sh -c /root/PWAppSh/StartSH.sh";
p = rt.getRuntime().exec(str);
above is the code snippet of java program for calling the shellscript
when i pass a argument to the shell script from my java program it wont get accepted in shell script as an input
when i do following changes in above code it wont work :---
str="/bin/sh -c /root/PWAppSh/StartSH.sh para1 para2 para3 ";
p = rt.getRuntime().exec(str);
para1,para2 and para3 wont get as argument for the shell script
how this can be done
thanks
reply "ARGENT"

Argent.
Read this:
Navigate yourself around pitfalls related to the Runtime.exec() method

Writing a java program for generating .pdf file with the data of MS-Excel .

Hi all,
My object is write a java program so tht...it'll generate the .pdf file after retriving the data from MS-Excel file.
I used POI HSSF to read the data from MS-Excel and used iText to generate .pdf file:
My Program is:
* Created on Apr 13, 2005
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
package forums;
import java.io.*;
import java.awt.Color;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
import com.lowagie.text.Font.*;
import com.lowagie.text.pdf.MultiColumnText;
import com.lowagie.text.Phrase.*;
import net.sf.hibernate.mapping.Array;
import org.apache.poi.hssf.*;
import org.apache.poi.poifs.filesystem.*;
import org.apache.poi.hssf.usermodel.*;
import com.lowagie.text.Phrase.*;
import java.util.Iterator;
* Generates a simple 'Hello World' PDF file.
* @author blowagie
public class pdfgenerator {
     * Generates a PDF file with the text 'Hello World'
     * @param args no arguments needed here
     public static void main(String[] args) {
          System.out.println("Hello World");
          Rectangle pageSize = new Rectangle(916, 1592);
                    pageSize.setBackgroundColor(new java.awt.Color(0xFF, 0xFF, 0xDE));
          // step 1: creation of a document-object
          //Document document = new Document(pageSize);
          Document document = new Document(pageSize, 132, 164, 108, 108);
          try {
               // step 2:
               // we create a writer that listens to the document
               // and directs a PDF-stream to a file
               PdfWriter writer =PdfWriter.getInstance(document,new FileOutputStream("c:\\weeklystatus.pdf"));
               writer.setEncryption(PdfWriter.STRENGTH128BITS, "Hello", "World", PdfWriter.AllowCopy | PdfWriter.AllowPrinting);
//               step 3: we open the document
                         document.open();
               Paragraph paragraph = new Paragraph("",new Font(Font.TIMES_ROMAN, 13, Font.BOLDITALIC, new Color(0, 0, 255)));
               POIFSFileSystem pofilesystem=new POIFSFileSystem(new FileInputStream("D:\\ESM\\plans\\weekly report(31-01..04-02).xls"));
               HSSFWorkbook hbook=new HSSFWorkbook(pofilesystem);
               HSSFSheet hsheet=hbook.getSheetAt(0);//.createSheet();
               Iterator rows = hsheet.rowIterator();
                              while( rows.hasNext() ) {
                                   Phrase phrase=new Phrase();
                                   HSSFRow row = (HSSFRow) rows.next();
                                   //System.out.println( "Row #" + row.getRowNum());
                                   // Iterate over each cell in the row and print out the cell's content
                                   Iterator cells = row.cellIterator();
                                   while( cells.hasNext() ) {
                                        HSSFCell cell = (HSSFCell) cells.next();
                                        //System.out.println( "Cell #" + cell.getCellNum() );
                                        switch ( cell.getCellType() ) {
                                             case HSSFCell.CELL_TYPE_STRING:
                                             String stringcell=cell.getStringCellValue ()+" ";
                                             writer.setSpaceCharRatio(PdfWriter.NO_SPACE_CHAR_RATIO);
                                             phrase.add(stringcell);
                                        // document.add(new Phrase(string));
                                                  System.out.print( cell.getStringCellValue () );
                                                  break;
                                             case HSSFCell.CELL_TYPE_FORMULA:
                                                       String stringdate=cell.getCellFormula()+" ";
                                                       writer.setSpaceCharRatio(PdfWriter.NO_SPACE_CHAR_RATIO);
                                                       phrase.add(stringdate);
                                             System.out.print( cell.getCellFormula() );
                                                       break;
                                             case HSSFCell.CELL_TYPE_NUMERIC:
                                             String string=String.valueOf(cell.getNumericCellValue())+" ";
                                                  writer.setSpaceCharRatio(PdfWriter.NO_SPACE_CHAR_RATIO);
                                                  phrase.add(string);
                                                  System.out.print( cell.getNumericCellValue() );
                                                  break;
                                             default:
                                                  //System.out.println( "unsuported sell type" );
                                                  break;
                                   document.add(new Paragraph(phrase));
                                   document.add(new Paragraph("\n \n \n"));
               // step 4: we add a paragraph to the document
          } catch (DocumentException de) {
               System.err.println(de.getMessage());
          } catch (IOException ioe) {
               System.err.println(ioe.getMessage());
          // step 5: we close the document
          document.close();
My Input from MS-Excel file is:
     Planning and Tracking Template for Interns
     Name of the Intern     N.Kesavulu Reddy
     Project Name     Enterprise Sales and Marketing
     Description     Estimated Effort in Hrs     Planned/Replanned          Actual          Actual Effort in Hrs     Complexity     Priority     LOC written new & modified     % work completion     Status     Rework     Remarks
S.No               Start Date     End Date     Start Date     End Date
1     setup the configuration          31/01/2005     1/2/2005     31/01/2005     1/2/2005
2     Deploying an application through Tapestry, Spring, Hibernate          2/2/2005     2/2/2005     2/2/2005     2/2/2005
3     Gone through Componentization and Cxprice application          3/2/2005     3/2/2005     3/2/2005     3/2/2005
4     Attend the sessions(tapestry,spring, hibernate), QBA          4/2/2005     4/2/2005     4/2/2005     4/2/2005
     The o/p I'm gettint in .pdf file is:
Planning and Tracking Template for Interns
N.Kesavulu Reddy Name of the Intern
Enterprise Sales and Marketing Project Name
Remarks Rework Status % work completion LOC written new & modified Priority
Complexity Actual Effort in Hrs Actual Planned/Replanned Estimated Effort in Hrs Description
End Date Start Date End Date Start Date S.No
38354.0 31/01/2005 38354.0 31/01/2005 setup the configuration 1.0
38385.0 38385.0 38385.0 38385.0 Deploying an application through Tapestry, Spring, Hibernate
2.0
38413.0 38413.0 38413.0 38413.0 Gone through Componentization and Cxprice application
3.0
38444.0 38444.0 38444.0 38444.0 Attend the sessions(tapestry,spring, hibernate), QBA 4.0
                                   The issues i'm facing are:
When it is reading a row from MS-Excel it is writing to the .pdf file from last cell to first cell.( 2 cell in 1 place, 1 cell in 2 place like if the row has two cells with data as : Name of the Intern: Kesavulu Reddy then it is writing to the .pdf file as Kesavulu Reddy Name of Intern)
and the second issue is:
It is not recognizing the date format..it is recognizing the date in first row only......
Plz Tell me wht is the solution for this...
Regards
[email protected]

Don't double post your question:
http://forum.java.sun.com/thread.jspa?threadID=617605&messageID=3450899#3450899
/Kaj

Can any Java program be able to auto generate objects?

Like to check if
Java program is be able to auto generate objects?

Take example: Point = constructor
Point p =new Point ();
so p is tne name of the object. Er... rite??"p" is the name of a variable. This is a refrence to an object (a instances of a class).
If you are asking what I think you are asking, look at Map. (Collections tutorial)
Please don't take offence, but I recomend taking a read of
Resources for Beginners
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. This one has been getting a lot of very positive comments lately.

Connect Java programs to ABAP generated Web Services

Hi everybody again!
This time I write looking for code examples about connecting my java programs in Netweaver to Abap generated web services.
Could anyone send me any example, please?
Thanks in advance again!
Alberto.

Hi,
I'm also looking for code examples about connecting Java programs to ABAP generated Webservices... could you, please, send it to me ?
actually, I need to call bapi from a java Web site.
(as an SOAP request ...)
is it better to <b>generate webser</b>vices from the Bapi then call it,
Or shall i keep the Bapi, and call it from a java webservices based on <b>JCO/RFC</b> calls ...
what's more efficient ?
java webservices + Jco calls to the bapi ?
or direct calls to generated abap webservices ?
thanks
saber

JSP codes for running a JAVA program

hello...
does anyone know the JSP codes for running a Java program from my web page?? i mean i already have my java program compiled... and i just want this java program to run in the background when I click on a button or a link...
Any idea about this?
plz advice..
avi

yes... u r somewhat right... but this runs on Jakarta Tomcat...
i'm using the Apache Http Server together with the ServletExec AS which enable the Apache server to run JSP..
I've created a package where i've put my classes...
WEB-INF/classes/tbd(package name)/my classes
and i've added.. package name.. in my java program..
and then in jsp... i've written..
<%@ page import="tdb.*"%>
<jsp:useBean id="exec" class="tdb.textdb" />
<%exec.convert_data();%>
but when i run the page it says the package does not exist...
can anyone tell where to place the folder WEB-INF so that it can run fine?
thx
avi

How to read card reader (bar code reader) in simple java program ?

hai all
how to manipulate (read/write) card readers (or bar code reader ) in
a java program ?
should i import any particular package library ?
pls give me any sample code or tutorials or tools, etc (whatever you have) .
i am new to this card reader category
its very urgent
thank you .

Nearly all card readers and barcode readers I've ever seen simply stick their input right onto stdin, so you can capture it just as if it had been typed in on a keyboard

To generate a wsdl using JAX-WS in JBOSS with java program but without EJB

Hi,
I am using JAX-WS to generate webservices using JBOSS application server by writing a java program.
My sample java program includes :which takes an i/p name as string and displays out put as "Hello name",with the use of annotations.And,also have written web.xml for it.If I start JBOSS without adding project to it,it is starting.BUt If I add project to it the server is not publishing.Its getting like:"publishing JBOSS 4.2.2....:waiting for virtual machine to exit".
I have followed the link:*http://www.javabeat.net/articles/2007/10/creating-webservice-using-jboss-and-eclipse/3*
to do this,where in it was given that by means of auto build process of eclipse IDE war file generates in default jboss folder.But which is not happening,so that,am unable to generate wsdl file..
Can any body help me?
1) why jboss is not publishing after adding project to it?
2) why war file is not generating in the default jboss folder?
Regards....

Yeah sure!!
Overall picture: I wish to expose my OSB services to the third parties using OCSG. For that I've created the Communication services corresponding to each OSB service.
Problem: Integration with the OSB.
At the OSB side I've got JMS queues which interacts with other existing systems in my SOA enviornment. But I'm not getting how to get the OCSG application- triggered request messages in that queue? Please help.
Also I've read about the SOA facades for integration with OSB.Which of the two approaches you will suggest?

Code to generate java program

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