Java Api VS Ejb/Xml

Hi, I need some information from all of you experts out there.
Currently we are running an appserver, the way it works is that we use ejb/xml to talk to corba stubs which eventually will talk to the server objects.
I am quite new to this technology, and currently considering of removing the use of ejb/xml layer and replace it with JAVA API. The idea is to get Webservice to talk to Corba stubs through JAVA API.
My question is:
1. Has anyone out there done this before? if so, what is your suggestion to this?
2. Is there any performance issue?
3. Is there any sample out there that does this?
Any reply/opinion is highly appreciated.
Thanks in advance.

I don't think so. I believe they come in the "javadoc" format only,
besides the HTML ones that are hosed online on java.sun.com.

Similar Messages

Java API docs as XML?

Hello:
I'm posting here because I don't really know where to post this question.
Are the Java API docs available as XML?
Thanks!
Greg

I don't think so. I believe they come in the "javadoc" format only,
besides the HTML ones that are hosed online on java.sun.com.

Error while using LiveCycle java APIs with Http servlets:"Remote EJBObject lookup failed for ejb/Inv

Hi all,
When i try to run more than one servelt of the Quick Start samples that using Livecycle Java APIs and i get an error of "Remote EJBObject lookup failed for ejb/Invocation provider" from any servelt i run.
I try some Quick samples which is not servelts (java class) and it works fine, which makes me sure that my connection properties is true.
Environment:
The LiveCycle is based on "Websphere v6.1", and i use "Eclipse Platform
Version: 3.4.1".
i install "tomcat 5.5.17" to test the servelts in developing time through Eclipse.(only for test in developing time not for deploy on )
The Jars i added in the classpath:
adobe-forms-client.jar
adobe-livecycle-client.jar
adobe-usermanager-client.jar
adobe-utilities.jar
ejb.jar
j2ee.jar
ecutlis.jar
com.ibm.ws.admin.client_6.1.0.jar
com.ibm.ws.webservices.thinclient_6.1.0.jar
server.jar
utlis.jar
wsexception.jar
My code is :
Properties ConnectionProps = new Properties();
ConnectionProps.setProperty(ServiceClientFactoryProperties.DSC_DEFAULT_EJB_ENDPOINT, "iiop://localhost:2809");
ConnectionProps.setProperty ServiceClientFactoryProperties.DSC_TRANSPORT_PROTOCOL,ServiceClientFactoryProperties.DSC_ EJB_PROTOCOL);
ConnectionProps.setProperty(ServiceClientFactoryProperties.DSC_SERVER_TYPE,ServiceClientFa ctoryProperties.DSC_WEBSPHERE_SERVER_TYPE);
ConnectionProps.setProperty(ServiceClientFactoryProperties.DSC_CREDENTIAL_USERNAME, "Administrator");
ConnectionProps.setProperty(ServiceClientFactoryProperties.DSC_CREDENTIAL_PASSWORD, "password");
ConnectionProps.setProperty("java.naming.factory.initial", "com.ibm.ws.naming.util.WsnInitCtxFactory");
//Create a ServiceClientFactory object
ServiceClientFactory myFactory = ServiceClientFactory.createInstance(ConnectionProps);
//Create a FormsServiceClient object
FormsServiceClient formsClient = new FormsServiceClient(myFactory);
//Get Form data to pass to the processFormSubmission method
Document formData = new Document(req.getInputStream());
//Set run-time options
RenderOptionsSpec processSpec = new RenderOptionsSpec();
processSpec.setLocale("en_US");
//Invoke the processFormSubmission method
FormsResult formOut = formsClient.processFormSubmission(formData,"CONTENT_TYPE=application/pdf&CONTENT_TYPE=app lication/vnd.adobe.xdp+xml&CONTENT_TYPE=text/xml", "",processSpec);
List fileAttachments = formOut.getAttachments();
Iterator iter = fileAttachments.iterator();
int i = 0 ;
while (iter.hasNext()) {
Document file = (Document)iter.next();
file.copyToFile(new File("C:\\Adobe\\tempFile"+i+".jp i++;
short processState = formOut.getAction();
...... (To the end of the sample)
My Error was:
com.adobe.livecycle.formsservice.exception.ProcessFormSubmissionException: ALC-DSC-031-000: com.adobe.idp.dsc.net.DSCNamingException: Remote EJBObject lookup failed for ejb/Invocation provider
at com.adobe.livecycle.formsservice.client.FormsServiceClient.processFormSubmission(FormsSer viceClient.java:416)
at HandleData.doPost(HandleData.java:62)
at HandleData.doGet(HandleData.java:31)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.j ava:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
a

I assume here that your application is deployed on a different physical machine of where LCES is deployed and running.
Do the following test:
- Say that LCES is deployed on machine1 and your application is deployed on machine2. Ping machine1 from machine2 and note the ip address.
- Ping machine1 from machine1 and note the ip address.
The two pings should match.
- Ping machine2 from machine1 and note the ip address.
- Ping machine2 from machine2 and note the ip address.
The two pings should match.
Usually this kind of error would happen if your servers have internal and external ip addresses.

Urgent - Need an answer - XML Java API

This is the 3rd time I've posted this question in last week - Oracle Support: How can I get an answer to this?
This question is about how to free up the memory of XMLDocuments, Parsers, etc using the Java APIs - not the PLSQL wrappers.
I'm writing an app using the DocumentSplitter class (from Steve M.'s book) that allows for the SAX parsing of large XML documents. But this question is really about the Oracle Java XML API.
Is there a way to free the memory of each of the "temporary" XMLDocuments that get created? I know there's a XMLNodeCover.freeDocument(int id)
method in the xmlplsql.jar- where do you get the id from? I'm trying XMLNodeCover.getDocumentId(curDoc) - but that doesn't seem to work.
And can I use that same method for each Node and Element that gets created also?
Also, would like to free the memory for the XSL processor, SAXParser, and XSLStylesheet - but this is even less obvious (although not as critical).
I'm actually getting out-of-memory errors even sooner when using the SAX parser then when using the DOM parser, and I think its due to this issue.
I know that there are PL/SQL wrappers for all these, but I'm trying to use the DocumentSplitter and associated custom classes
in only Java stored procs, and then writing a single XSLT.transform wrapper. This way its largely invisible to the PLSQL layer.
Thanks

Hi - thanks for your response.
Actually, yes, I did change the split method to return a CLOB. The big picture is I'm trying to use the DocumentSplitter
class to assist in the transformation of large XML documents to html or tab-delimited output. Using the standard DOM parser,
I eventually get an out-of-memory situation. So now I'm trying the DocumentSplitter to do a "mini" XSL transform on each <ROW>.
The good news is it works for small to medium size reports. But its slower and runs out of memory quicker.
Below is some of the relevant code. I also wrote associated classes to wrap the DocumentSplitter and to be the 'handler' that transfoms the XML when a <ROW> is found, and returns a string (see 'endElement' method below).
I'm freeing the CLOBS in PLSQL after reading them - do I need to free them from JVM memory seprately? If so, how can I do that if I need to pass them to PLSQL?
Thanks much,
Eric
// Split a large XML document into N subdocuments, each one identified
// by the an opening 'splitElement' element. Invoke an XMLDocumentHandler
// to process each subdocument encountered.
public CLOB split(String splitElement, CLOB inputCLOB, CLOB outputCLOB)
throws Exception, SAXParseException,SAXException,IOException, SQLException {
this.inputCLOB = inputCLOB;
this.outputCLOB = outputCLOB;
this.splitOnElement = splitElement;
// Create a new SAXParser
SAXParser parser = new SAXParser();
// Register the current instance of this class as the Document Handler
parser.setDocumentHandler(this);
// Create ascii stream from CLOB source
InputStream inputStream = inputCLOB.getAsciiStream();
// Start parsing the stream of XML
parser.parse(inputStream);
Writer out = this.outputCLOB.getCharacterOutputStream();
// Set buffer to be the optimal size
int chunk = outputCLOB.getChunkSize();
char[] buffer = new char[chunk];
// Create a reader from the output string
StringReader reader = new StringReader(this.outputString);
int length = -1;
// Now write from output string to output CLOB
while ((length = reader.read(buffer)) != -1) {
out.write(buffer, 0, length);
// Close streams
reader.close();
out.close();
inputStream.close();
return outputCLOB;
portion of endElement method:
// Handle the </Element> "end-element" parsing event
public void endElement(String name) throws SAXException {
// If we're NOT building a subdocument, we don't care. Just return.
if (curDoc == null) return;
// If this is the endElement event for the subdocument splitElement
// then we're done with the subdocument and are ready to call the
// handler to handle it.
if (name.equals(splitOnElement)) {
if (curDoc != null) {
try {
// Call the XMLDocumentHandler.handle() method for current subdoc
//Append the output to the growing output string
if (this.outputString == null) {
this.outputString = handler.handleDocument(curDoc);
} else {
this.outputString = this.outputString + handler.handleDocument(curDoc);
catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
}

Java API - Editor class for an XML schema

Hi,
i am very interesting in Java API. I would like to make an editor class for an XML schema. (I will create XML files in the current project based on this XML schema.) What step's are require for this editor class?
Regards
Gabor

DavidThi808 wrote:
jtahlborn wrote:
you can provide a schema when parsing an xml document in order to check for schema conformance, but that isn't going to affect your XPath queries at all. DOM content is never anything but strings.In the case of both dom4j/jaxen and the .NET runtime the values returned from XPath queries when a schema is provided are typed. So you get back numbers, dates, and booleans as well as strings. And for numbers you get correct comparisons so 20 > 1.i guess it's possible. i use schemas when parsing xml, and i've used xpath (infrequently), but i'm not sure that i've ever used them together in a way that i would see functionality like that.
FYI, you use http://docs.oracle.com/javase/6/docs/api/javax/xml/parsers/DocumentBuilderFactory.html#setSchema%28javax.xml.validation.Schema%29 to specify a schema while parsing with a DocumentBuilder.

Question about Java API for XML schema?

Hello, everyone!
I am looking for a java api for XML schema. I hope the API is capable for parsing the structure of element
or complextype declarations in XML schema. So for example, if I specify a name of an element or
complextype defined in a schema, the name, dataype and other constraints of contained child elements can be returned.
Does anyone know if there exists such a paser?
Thanks very much!

An implementation of DOM Level 3.

How to SaveAs the MSword file into xml file format using Java APIS?

Hello all,
I want to convert MSword file into Xml format using java APIS or any other inbuilt APIS that i can integrate in Java code.

Sorry, that doesn't make much sense.
The XML you gave is a configuration file for txt2xml utility. It doesn't represent the output format.
Are you a user of this utility?

User defined Metadata for XML DB using Java API

I have been looking through and reading the documentation for Oracle XML DB. I am trying to find out if there is a way to create user define metadata using a Java API. when I look in the XML "Java API Reference (Javadoc)" setProperty(java.lang.String name, java.lang.String value, int type) it states: Sets the specified (single-value) property to the specified value. If the property does not yet exist, it is created. I have tried several ways to do this and have not been successful. I have looked for java examples in the XML DB Developer's Guide, XML Developer's Kit Programmer's Guide.
Is there a good example out there as to how to create user-defined metadata that can be populated using the JCR API.
Thanks in advance.

We need to create the 2 xml schemas, one for request and the other for response of selected operation in the WSDL.
This we need to do dynamically. There will not be any java classes generated, the xsd files need to be created on the fly.
Please suggest xml schema creation in this sequence.

Replication of Berkeley DB Xml Edition with the help of JAVA API

hi,
i am trying to replicate berkeley DB to 2 other replicas.with the help of small program which along with its documentation(of chapter 3). And i'm using java API for the same(specifically replication framework program.)
All necessary files are get created at host side like log files, dll files, db files. But at replica(client) side nothing get created. Host and clients are placed in the same network.
But unfortunately its not working. don't know the reason. And its not giving any sort of error. And i dont know how to go ahead. Or is there any other way should i proceed with.
So could you help me out to get rid of this problem.
Thanks

What compiler are you running?
See this message and thread:
Re: Problem after update to 2.3.8
It may be necessary to apply the -fno-strict-aliasing flag to the Berkeley DB Java library as well.
Regards,
George

[E2010][EWS-XML][JAVA]How to get the properties of meeting rooms in Exchange 2010 using EWS Java API

When you look at meeting room properties in Outlook 2010, you can see 'City', 'Country/Region' and 'Department' information.
Is there any way to get this information using EWS Java API?

Hi Glen,
I am able to understand what u have said, but do not know how to implement it with meeting rooms....
If i am implementing
"Get all appointments between startDate and endDate in the specified folder, including recurring meeting occurrences" in ews-java-api, as you have mentioned above, i am able to get only my appointments from the start date to end date , as i
have given my email id and password, how to get my organization meeting room details, booked or not.
static ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010_SP2);
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
ExchangeCredentials credentials = new WebCredentials("[email protected]", "zzzz");
service.setCredentials(credentials);
try {
System.out.println("Check");
service.autodiscoverUrl("[email protected]",new RedirectionUrlCallback());
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
NameResolutionCollection nameResolutions = service.resolveName("SDB1",ResolveNameSearchLocation.DirectoryOnly, true);
System.out.println("nameResolutions==="+nameResolutions.getCount());
for(NameResolution nameResolution : nameResolutions)
System.out.println("NAME==="+nameResolution.getContact().getDisplayName());
The above code gives me the output like, the meeting room in my organization with word SDB1 are
Output:
nameResolutions===2
NAME===SDB1- TELCON - 1
NAME===SDB1-TELCON - 2
for. eg. I need to know today at what are the appointments in the room SDB1-TELCON2 and who all have booked the room.
I do not know how to implement for the meeting room can you please help me how to give it.
Thanks in advance.

Deployment Issue with MDM Java API exposed as Webservice using EJBS

Hi Experts,
I am implementing MDM Java APIS in Stateless session bean.Exposed that bean as Webservice and using that webservice in
Webdynpro through Adaptive Webservice Model.
I am facing following issue:
Webservice works fine after deployment,after some number of execution webservice stops working and gives exception.After
Redeployment of the Webservice, it starts working again works fine some number of execution.
I am Using new MDMJava API.
MDM Server Details: MDM 5.5 SP06
I am using following code for connetion
//////////////*************Getting Connection************///////
          ConnectionPool pool = null;
          String sessionId = null;
          try {
               pool = ConnectionPoolFactory.getInstance("Server Ip");
          } catch (ConnectionException e1) {
               System.out.println(e1.getMessage());
//////////////*************Repository Session************///////
CreateRepositorySessionCommand repSeession =
               new CreateRepositorySessionCommand(p_pool);
          repSeession.setRepositoryIdentifier(p_repId);
          try {
               repSeession.execute();
          } catch (CommandException e2) {
               System.out.println(e2.getMessage().toString());
          String repIID = repSeession.getRepositorySession();
          //     Authenticate Repository
          AuthenticateRepositorySessionCommand autRepSeesion =
               new AuthenticateRepositorySessionCommand(p_pool);
          try {
               autRepSeesion.setSession(repSeession.getRepositorySession());
               autRepSeesion.setUserName(p_user);
               autRepSeesion.setUserPassword(p_Password);
               autRepSeesion.execute();
          } catch (CommandException e3) {
               System.out.println(
                    "RepSession Seesion" + e3.getMessage().toString());
          return autRepSeesion.getSession();
//////////////*************user Session************///////
GetRepositoryRegionListCommand regionListCommand =
               new GetRepositoryRegionListCommand(p_pool);
          regionListCommand.setRepositoryIdentifier(p_repId);
          try {
               regionListCommand.execute();
          } catch (CommandException e) {
               System.out.println(e.getMessage().toString());
          RegionProperties[] regions = regionListCommand.getRegions();
          //                                 create a user session
          CreateUserSessionCommand UsersessionCommand =
               new CreateUserSessionCommand(p_pool);
          UsersessionCommand.setRepositoryIdentifier(p_repId);
          UsersessionCommand.setDataRegion(regions[0]);
          // use the first region
          try {
               UsersessionCommand.execute();
          } catch (CommandException e) {
               System.out.println("UserSession" + e.getMessage().toString());
          String UsersessionId2 = UsersessionCommand.getUserSession();
AuthenticateUserSessionCommand authUserCommand =
               new AuthenticateUserSessionCommand(p_pool);
          authUserCommand.setSession(UsersessionCommand.getUserSession());
          authUserCommand.setUserName(p_userId);
          authUserCommand.setUserPassword(p_password);
          try {
               authUserCommand.execute();
          } catch (CommandException e) {
               System.out.println("User Seesion" + e.getMessage().toString());
          return authUserCommand.getSession();
//////////////*************Destroy Session************///////
     DestroySessionCommand destroySessionCommand =
               new DestroySessionCommand(p_pool);
          destroySessionCommand.setSession(p_repsession);
          try {
               destroySessionCommand.execute();
          } catch (CommandException e) {
               e.printStackTrace();
          destroySessionCommand.setSession(p_Uesrsession);
               try {
                    destroySessionCommand.execute();
               } catch (CommandException e) {
                    e.printStackTrace();
Do we need to relase the connection pool object also?
Can anyone help me with the code how that can be achived?
Please Reply if anyone has come accross similar issue or know what can be the solution.
Thanks in Advance.
Regards Shruti
Edited by: Shruti Shah on Dec 18, 2008 12:52 PM

Hi Nitin,
Thanks for the prompt Response.
Even I am guessing that its becose of Connection pool.
I am destroying session as follows
               DestroySessionCommand destroySessionCommand =
               new DestroySessionCommand(p_pool);
          destroySessionCommand.setSession(p_repsession);
          try {
               destroySessionCommand.execute();
          } catch (CommandException e) {
               e.printStackTrace();
          destroySessionCommand.setSession(p_Uesrsession);
               try {
                    destroySessionCommand.execute();
               } catch (CommandException e) {
                    e.printStackTrace();
But I didnot find any method by which i can close realsse connection from connection pool.
It would be great if you can help me how close or realese those connection.In MDM Console i am able to see those sessions even after destroying them.
Regards Shruti.

Auto indent XML Java API

Is the "Auto Indent XML" context menu function available as an API.
I have several JDeveloper Addin's that generate XML, but would prefer to use the built-in formatter.
Thanks
Pat

There is an API for manipulating XML in the product, but unfortunately it's not public yet.
In the meantime, probably the easiest way to reformat XML (or any file) in 10.1.3 is to programmatically invoke the Reformat command. This will work on any context where the document or selection is an XMLSourceNode.
// !! The CodingStyleController.FORMAT_CMD constant is not guaranteed
// !! to stay the same in future releases.
IdeAction action = IdeAction.find( Ide.findCmdID( "CodingStyleController.FORMAT_CMD" ) );
action.performAction( context );Thanks,
Brian

JAVA API for XML Web Services (JAX-WS), version 2.0.

i read the article "Introducing JAX-WS 2.0 With the Java SE 6 Platform, Part 1 By Robert Eckstein and Rajiv Mordani, September 2006 " and i was impressed by it.
I tried to implement it on NETBEANS 5.5 and i only changed the package name from HELLO to wsPOJO
i got the following error
Exception in thread "main" Server Runtime Error: class: wspojo.jaxws.GetArea could not be found
at com.sun.xml.ws.transport.http.server.HttpEndpoint.publish(HttpEndpoint.java:267)
at com.sun.xml.ws.transport.http.server.EndpointImpl.publish(EndpointImpl.java:85)
at com.sun.xml.ws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:57)
at javax.xml.ws.Endpoint.publish(Endpoint.java:156)
at wspojo.CircleFunctions.main(CircleFunctions.java:29)
if any one can help.
Thanks in advance.

Try your question here,
http://forums.java.net/jive/forum.jspa?forumID=46

Performance of Java API 2

Hello,
we are currently using Java API 2 that comes with MDM 5.5 SP5 (Build 5.5.42.65) to read extended information from the mdm repository.
Our process:
We are export every product as a XML file over the MDM Syndicator and enrich this file with extended information from the API (This step is needed because we cannot export all data by the Syndicator, for example multilingual attributes / some product data like textblocks / id's for incremental updates ...).
Actually the performance is really bad, we need ca. 10-15 secs to process one file, that is really frustrating when you have stored near 70.000 products in your repository.
Are there some tricks to improve the performance or is the API really so slow? Or any better alternatives for an fast export?
Thanks for your help ....
Best Regards,
Jan

1 - If you are able to use the EJB connection with the LiveCycle SDK classes (you have are using a supported java version such as 1.5_xx, your network security doesn't prevent RMI calls, etc.) then that is your best bet.
2 - Yes, you will need the java APIs to be accessible for your application. The LiveCycle APIs have remote EJB endpoints so you can access them from another server.
3 - There are samples that ship with the LiveCycle server (located in your LCInstall\LiveCycle_ES_SDK\samples\Forms). There are also samples on the LiveDocs page at: http://livedocs.adobe.com/livecycle/8.2/programLC/programmer/help/000064.html

Invoking a BPEL process from java API (Urgent)

Hi,
I am using this java api to invoke a bpel process.
package mypackage;
import com.oracle.bpel.client.Locator;
import com.oracle.bpel.client.NormalizedMessage;
import com.oracle.bpel.client.dispatch.IDeliveryService;
import com.oracle.bpel.client.ServerException;
public class InvokeBpel1
// Connect to domain “default” using password “bpel”
// null IP address means local server
public static void main(String args[])
Locator locator=null;
String xml =" <soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope\">"
+"<soap:Header/>"
+" <soap:Body xmlns:ns1=\"http://xmlns.oracle.com/BPELMultiplePO\">"
+"<ns1:BPELMultiplePOProcessRequest>"
+" <ns1:input>4686</ns1:input>"
+" </ns1:BPELMultiplePOProcessRequest>"
+" </soap:Body>"
+"</soap:Envelope>";
try
locator = new Locator("default","bpel","10.227.5.34");
IDeliveryService deliveryService =(IDeliveryService)locator.lookupService(IDeliveryService.SERVICE_NAME );
NormalizedMessage nm = new NormalizedMessage( );
nm.addPart("payload", xml );
NormalizedMessage res =
deliveryService.request("BPELMultiplePO(v1.1)", "process", nm);
catch (Exception e)
e.printStackTrace();
But it is showing following errors.----
java.lang.Exception: Failed to create "ejb/collaxa/system/DomainManagerBean" bean; exception reported is: "javax.naming.NameNotFoundException: ejb/collaxa/system/DomainManagerBean not found
     at com.evermind.server.rmi.RMIContext.lookup(RMIContext.java:164)
     at com.evermind.naming.FilterContext.lookup(FilterContext.java:138)
     at com.evermind.naming.SubFilterContext.lookup(SubFilterContext.java:55)
     at javax.naming.InitialContext.lookup(InitialContext.java:347)
     at com.oracle.bpel.client.util.BeanRegistry.lookupDomainManagerBean(BeanRegistry.java:218)
     at com.oracle.bpel.client.auth.DomainAuthFactory.authenticate(DomainAuthFactory.java:83)
     at com.oracle.bpel.client.auth.DomainAuthFactory.authenticate(DomainAuthFactory.java:47)
     at com.oracle.bpel.client.Locator.<init>(Locator.java:87)
     at mypackage.InvokeBpel1.main(InvokeBpel1.java:26)
     at com.oracle.bpel.client.util.BeanRegistry.lookupDomainManagerBean(BeanRegistry.java:232)
     at com.oracle.bpel.client.auth.DomainAuthFactory.authenticate(DomainAuthFactory.java:83)
     at com.oracle.bpel.client.auth.DomainAuthFactory.authenticate(DomainAuthFactory.java:47)
     at com.oracle.bpel.client.Locator.<init>(Locator.java:87)
     at mypackage.InvokeBpel1.main(InvokeBpel1.java:26)
What should I do remove this problem?

Your problem sounds like many RMI problems answered in this forum in the past, especially if the java client is not on the same container as the bpel engine.
Usually solved with setting some environment properties like dedicated.rmicontext=true etc.
Please search the forum history.

Java Api VS Ejb/Xml

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