Passing implementation of Java interfaces

Hi
I have a static function which I want to be supplied with a another class. Now the passed class needs to be an implementation of that class. How can I make sure?
Thanks
Saaransh

an example:
Lets say I have an interface :
public interface foo
//some methods
Now thers a static function. Which I want should take in a parameter (an object) which has implemented the above interface.
How do i do this?
NOTE: I am making a framework API and thus the class making the object will not be known to me. It will be created by someone else and not me.
Thanks

Similar Messages

Q: Declaratively Implement a Java Interface, How?

Hi Again,
I want to be able to Declaratively Implement 'Response' in a JavaFX (very impressive stuff if I can do this!). Follow the example code below :)
Java Interface:
public interface Response {
   public String doResponse(String input);
}The JavaFX Class:
public class MyResponse extends Response {
override public-init var doResponse: function (input:String):String; //doesn't work!
}JavaFX Declarative Implementation (the goal):
var responder:MyResponse {
    doResponse: function (input:String):String {
        return "JavaFX Rocks!"
}So the above should allow whoever is creating "MyResponse" to implement the doResponse functionality of the class.
Alternatively, I can just have to do the following.....
public class MyResponse extends Response {
public-init var doResponseImpl:function (input:String):String;
public override function doResponse(input:String):String{
      return doResponseImpl(input);
}Either way works... but the alternative is not so nearly as clean :)
Thanks in advance...

I don't see a way to do this. You want to transform a function to a variable. Even if that's a variable holding a function, these are incompatible.
But you can just override the function in the class instantiation:
var responder = Response {
    override function doResponse(input: String): String {
        return "JavaFX Rocks!"
}

A java List that implements the Stream interface?

Hello,
I just took some time to start looking into the java-8 buzz about streams and lambdas.
And have a couple of questions...
The first thing that surprised me is that you cannot apply the streams operations,
like .map(), .filter() directly on a java.util.List.
First question:
Is there a technical reason why the java.util.List interface was not extended with
default-implementations of these streams operations? (I guess there is...?)
Googling a bit, I see lots of examples of people coding along the pattern of:
    List<String> list = someExpression;
    List<String> anotherList = list.stream().map(x -> f(x)).collect(Collectors.toList());
which becomes very clumsy, if you have a lot of these stream-operations in your code.
Since .stream() and .collect() are completely irrelevant to what you want to express,
you would rather like to say:
    List<String> list = someExpression;
    List<String> anotherList = list.map(x -> f(x));
What I first did as a workaround, was to implement (see code below)
a utility interface FList, and a utility class FArrayList (extending ArrayList with .map() and .filter()).
(The "F" prefixes stand for "functional")
Using these utilities, you now have two options to create less clumsy code:
    List<String> list = someExpression;
    List<String> anotherList = FList.map(list, x -> f(x));
    List<String> thirdList = FList.filter(list, somePredicate);
or better:
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    FList<String> thirdList = list.filter(somePredicate);
My second question:
What I would really like to do is to have FArrayList implement the
java.util.stream.Stream interface, to fully support the java-8 functional model.
Since that involves implementing some 40 different methods, I would just like to know,
if you know somebody has already done this kind of work, and the code is
available somewhere as a public jar-file or open-source?
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            for (T item : this) {
                if (p.test(item)) {
                    result.add(item);
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    public class FArrayList<T> extends ArrayList<T> implements List<T>, FList<T> {
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        public FArrayList() {
            super();
        public FArrayList(List<T> list) {
            super();
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I believe SSH and telnet are used for interactive command line sessions, don't know how you want to use them in a program.

Java Interface does not accept method that passes ArrayList...Why?

Java Interface does not accept method that passes ArrayList...Why?
for example...
public interface Interface extends java.rmi.Remote
public ArrayList getSomething(String ID) throws java.rmi.RemoteException;
Why is this not acceptable?

Java Interface does not accept method that passes ArrayList...Why?for example...
ALSO:
You are not 'passing' ArrayList, you are returning it.
If you are 'passing' anything, it is String.
~David

A Bean must implement the java.io.Serializable interface? What makes the di

Hi, I have took an example from sun notes on JavaBeans (you can find the example here http://java.sun.com/developer/onlineTraining/Beans/beans02/page2.html). The code is like this.....
import java.awt.*;
import java.io.Serializable;
public class SimpleBean extends Canvas
                 implements Serializable {
private Color color = Color.green;
//getter method
public Color getColor() {
     return color;
//setter method
public void setColor(Color newColor) {
     color = newColor;
     repaint();
//override paint method
public void paint (Graphics g) {
     g.setColor(color);
     g.fillRect(20,5,20,30);
//Constructor: sets inherited properties
public SimpleBean() {
     setSize(60,40);
     setBackground(Color.red);
}I didn't find any difference in executing the program by implementing the Serializable interface and without implementing. On choosing serialize component in the File Menu, I serialized the component after changing its color (property), and saved as .ser file. And created the .Jar file including .ser file. when I load the jar file and place the bean in the beanbox, it is showing the bean that is updated. This can be done by implemeting Serializable interface and without implementing Serializable interface also. And I have a statement that has been given in the notes provided by SUN. That is ' Bean must implement the Serializable interface. Objects that support this interface can save and restore their state from disk '. I couldnot come up with the summation of this statement.
Anyone who has an idea... please give an explanation.
Thank you.

Maybe you should show us your coding how you saved your beans state.
Are you serious that you save the special object? Or do you save the values of the object into a file and load those values into a new object?

Pass literal to Java Stored Procedure?

The standard Java SP call spec is of the form: (assume a PLSQL package spec properly declares publicProc)
CREATE OR REPLACE PACKAGE BODY JavaSP AS
PROCEDURE publicProc(param1 IN VARCHAR2) AS LANGUAGE JAVA NAME 'package1.Class1.method1(java.lang.String)';
END;
If I want to pass a value to the Java SP vs passing a parameter that's passed to me by the caller (say I want to invoke the Java method with the string "TEST" passed as a literal value from the package, but don't want the PLSQL caller to know/care what I'm passing to the Java method), is there a way that I can do something like the following? (ie, where I pass the literal value "TEST" as a param to the Java method instead of passing a param that is passed via PLSQL by the caller...)
CREATE OR REPLACE PACKAGE BODY JavaSP AS
privateVar VARCHAR2(20) := "TEST";
PROCEDURE publicProc(param1 IN VARCHAR2) AS LANGUAGE JAVA NAME 'package1.Class1.method1(privateVar)';
END;
Clearly, this is an illegal/improper call spec and won't compile, but it hopefully illustrates what I'm trying to accomplish.
My work-around to this has always been the following:
CREATE OR REPLACE PACKAGE BODY JavaSP AS
privateVar VARCHAR2(20) := 'TEST';
PROCEDURE privateProc(param1 IN VARCHAR2) AS LANGUAGE JAVA NAME 'package1.Class1.method1(privateVar)';
PROCEDURE publicProc AS
BEGIN
privateProc(privateVar);
END;
END;
But it'd be interesting/nice to be able to pass the value directly vs "double-wrapping" the Java SP.
Any thoughts??
Thanks,
Jim

Oracle provides several ways of passing objects to and from java to Oracle Stored Procedure.
One way is to directly create oracle.sql.STRUCT object and pass array of values to this object. Another way is to implement java.sql.SQLData or oracle.sql.ORAData interfaces in your class and pass this class to setObject function.
It is all well described in manual in chapter "Working with Oracle Object Types", there is also a lot of examples in this chapter and on the web.
http://download-uk.oracle.com/docs/cd/B19306_01/java.102/b14355/oraoot.htm - Working with Oracle Object Types
Some of the examples:
http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/files/advanced/ObjectOracleSample/Readme.html
http://javaalmanac.com/egs/java.sql/InsertObjectOraclePreparedStatement.html

Implementing two generic interfaces

I have a generic interface,
public interface Callback<R> {
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class X implements Callback<Type1>, Callback<Type2> {
   public void result(Type1 r) {};
   public void result(Type2 r) {};
}But Eclipse tells me "The interface Callback cannot be implemented more than once with different arguments".
I don't see the reason why really. The two overloaded result methods have different signatures so there shouldn't be any problem in resolving the correct one based on parameter type in principle.
Does anybody know the reason for this restriction or is it maybe an issue with Eclipse. I'm using Eclipse 3.2M5a and Java 6.0 beta.

mlk has the correct answer, but here's some more explanation:
Generics are only used at compile time. The actual bytecode specifies the base object type (aka type erasure), in this case Object. When you implement a generified interface, the compiler will generate a bridge method from the erased type to the specific type.
Some examples should make this clearer.
First, your interface. If you run javap on the compiled class, you'll see that it only defines a single method, "void result(Object)".
Code that invokes the interface, like this:
    Callback<String> foo = \\
    foo.result("bar");also gets translated to a call on the base type. As far as the compiled class is concerned, there is no type safety. However, the compiler will complain if you pass something other than a String.
The implementation class is where things get interesting:
public class TestCallback implements Callback<String> {
public void result(String x) {
}If you run javap on this class, you'll see that it contains two implementations of result(): one that takes a String, and one that takes an Object. If you look at the bytecode, the latter performs a cast on the Object and invokes the String variant.

Passing parameters from java jdbc to pl/sql

I’m calling stored procedures from java jdbc… but looking for nicer interfaces in terms of passing data. Has anyone come up with a good way to pass data from java jdbc to pl/sql without passing a million parameters? I’m thinking here of some type of structure like pl/sql rowtype or table index type or something else. Has anyone tried to create typed objects in oracle databases and access them from java?
Thanks, Patrick Caldwell

Hi Patrick,
Yes, I have created an Oracle object type, which I successfully returned to a java class, from a PL/SQL stored function, using JDBC. Environment was J2SE 1.3.1, with Oracle 8.1.7.4 on SUN [sparc] Solaris 7 with Oracle's JDBC (thin) driver. It was a while ago, so I don't remember the details very clearly, but I recall being able to figure it out quite easily using the Oracle documentation and the sample code available at Oracle's Technet Web site.
Hope this has helped you.
Good Luck,
Avi.

Pass value from Java to Perl

Anyone knows how to pass value from Java to Perl program?

Did you write the perl program? Can you change it? Or are you trying to interface to something that already exists? This will limit your options, of course.
Anyway the first option is simple. The java program does this:
System.out.println("This is a line of input.");The perl program does this:
while(<>)and in that block, $_ is assigned to each line of input.
Then you can invoke both like this:
$ java MyJavaProgram | perl MyPerlProgram.pl

Java Interface Question.

There are classes in the Java SDK, such as the Interface:
org.w3c.dom.Document
that have factory methods in them that carry out actual operations.
But how can this be possible, because when I program an interface:
public interface test {
public void setString(String s);
It will only compile thus, with no implementation on the method signatures?
How do Java interfaces with factory methods to this?
org.w3c.dom.Node is another one. Where does the functionality/method implementation
come from?

public interface MyInterface {
     public void method1();
class MyImplementation implements MyInterface {
     public void method1(){
public class MyFactory {
     public static MyInterface createMyInterface(){
          return new MyImplementation();
public class Test{
           public static void main(String args[]){
                  MyInterface x=MyFactory.createMyInterface();
                  x..method1();
}Now can you understand this? Assume all These classes are separate classes. This is not a problem with inner classes. Before make a reply, try to understand it or post a reply as saying it is not clear rather than posting this kind of post.

Passing Array of java objects to and from oracle database-Complete Example

Hi all ,
I am posting a working example of Passing Array of java objects to and from oracle database . I have struggled a lot to get it working and since finally its working , postinmg it here so that it coudl be helpful to the rest of the folks.
First thinsg first
i) Create a Java Value Object which you want to pass .
create or replace and compile java source named Person as
import java.sql.*;
import java.io.*;
public class Person implements SQLData
private String sql_type = "PERSON_T";
public int person_id;
public String person_name;
public Person () {}
public String getSQLTypeName() throws SQLException { return sql_type; }
public void readSQL(SQLInput stream, String typeName) throws SQLException
sql_type = typeName;
person_id = stream.readInt();
person_name = stream.readString();
public void writeSQL(SQLOutput stream) throws SQLException
stream.writeInt (person_id);
stream.writeString (person_name);
ii) Once you created a Java class compile this class in sql plus. Just Copy paste and run it in SQL .
you should see a message called "Java created."
iii) Now create your object Types
CREATE TYPE person_t AS OBJECT
EXTERNAL NAME 'Person' LANGUAGE JAVA
USING SQLData (
person_id NUMBER(9) EXTERNAL NAME 'person_id',
person_name VARCHAR2(30) EXTERNAL NAME 'person_name'
iv) Now create a table of Objects
CREATE TYPE person_tab IS TABLE OF person_t;
v) Now create your procedure . Ensure that you create dummy table called "person_test" for loggiing values.
create or replace
procedure give_me_an_array( p_array in person_tab,p_arrayout out person_tab)
as
l_person_id Number;
l_person_name Varchar2(200);
l_person person_t;
l_p_arrayout person_tab;
errm Varchar2(2000);
begin
     l_p_arrayout := person_tab();
for i in 1 .. p_array.count
loop
     l_p_arrayout.extend;
     insert into person_test values(p_array(i).person_id, 'in Record '||p_array(i).person_name);
     l_person_id := p_array(i).person_id;
     l_person_name := p_array(i).person_name;
     l_person := person_t(null,null);
     l_person.person_id := l_person_id + 5;
     l_person.person_name := 'Out Record ' ||l_person_name ;
     l_p_arrayout(i) := l_person;
end loop;
p_arrayout := l_p_arrayout;
     l_person_id := p_arrayout.count;
for i in 1 .. p_arrayout.count
loop
insert into person_test values(l_person_id, p_arrayout(i).person_name);
end loop;
commit;
EXCEPTION WHEN OTHERS THEN
     errm := SQLERRM;
     insert into person_test values(-1, errm);
     commit;
end;
vi) Now finally create your java class which will invoke the pl/sql procedure and get the updated value array and then display it on your screen>Alternatively you can also check the "person_test" tbale
import java.util.Date;
import java.io.*;
import java.sql.*;
import oracle.sql.*;
import oracle.jdbc.driver.*;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class ArrayDemo
public static void passArray() throws SQLException
Connection conn = getConnection();
ArrayDemo a = new ArrayDemo();
Person pn1 = new Person();
pn1.person_id = 1;
pn1.person_name = "SunilKumar";
Person pn2 = new Person();
pn2.person_id = 2;
pn2.person_name = "Superb";
Person pn3 = new Person();
pn3.person_id = 31;
pn3.person_name = "Outstanding";
Person[] P_arr = {pn1, pn2, pn3};
Person[] P_arr_out = new Person[3];
ArrayDescriptor descriptor =
ArrayDescriptor.createDescriptor( "PERSON_TAB", conn );
ARRAY array_to_pass =
new ARRAY( descriptor, conn, P_arr);
OracleCallableStatement ps =
(OracleCallableStatement )conn.prepareCall
( "begin give_me_an_array(?,?); end;" );
ps.setARRAY( 1, array_to_pass );
     ps.registerOutParameter( 2, OracleTypes.ARRAY,"PERSON_TAB" );
     ps.execute();
     oracle.sql.ARRAY returnArray = (oracle.sql.ARRAY)ps.getArray(2);
Object[] personDetails = (Object[]) returnArray.getArray();
Person person_record = new Person();
for (int i = 0; i < personDetails.length; i++) {
          person_record = (Person)personDetails;
          System.out.println( "row " + i + " = '" + person_record.person_name +"'" );
                    public static void main (String args[]){
     try
                         ArrayDemo tfc = new ArrayDemo();
                         tfc.passArray();
     catch(Exception e) {
                    e.printStackTrace();
          public static Connection getConnection() {
     try
                         Class.forName ("oracle.jdbc.OracleDriver");
                         return DriverManager.getConnection("jdbc:oracle:thin:@<<HostNanem>>:1523:VIS",
                         "username", "password");
     catch(Exception SQLe) {
                    System.out.println("IN EXCEPTION BLOCK ");
                    return null;
and thats it. you are done.
Hope it atleast helps people to get started. Comments are appreciated. I can be reached at ([email protected]) or [email protected]
Thanks
Sunil.s

Hi Sunil,
I've a similar situation where I'm trying to insert Java objects in db using bulk insert. My issue is with performance for which I've created a new thread.
http://forum.java.sun.com/thread.jspa?threadID=5270260&tstart=30
I ran into your code and looked into it. You've used the Person object array and directly passing it to the oracle.sql.ARRAY constructor. Just curios if this works, cos my understanding is that you need to create a oracle.sql.STRUCT out of ur java object collection and pass it to the ARRAY constructor. I tried ur way but got this runtime exception.
java.sql.SQLException: Fail to convert to internal representation: JavaBulkInsertNew$Option@10bbf9e
                    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
                    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
                    at oracle.jdbc.oracore.OracleTypeADT.toDatum(OracleTypeADT.java:239)
                    at oracle.jdbc.oracore.OracleTypeADT.toDatumArray(OracleTypeADT.java:274)
                    at oracle.jdbc.oracore.OracleTypeUPT.toDatumArray(OracleTypeUPT.java:115)
                    at oracle.sql.ArrayDescriptor.toOracleArray(ArrayDescriptor.java:1314)
                    at oracle.sql.ARRAY.<init>(ARRAY.java:152)
                    at JavaBulkInsertNew.main(JavaBulkInsertNew.java:76)
Here's a code snippet I used :
Object optionVal[] =   {optionArr[0]};   // optionArr[0] is an Option object which has three properties
oracle.sql.ArrayDescriptor empArrayDescriptor = oracle.sql.ArrayDescriptor.createDescriptor("TT_EMP_TEST",conn);
ARRAY empArray = new ARRAY(empArrayDescriptor,conn,optionVal);If you visit my thread, u'll see that I'm using STRUCT and then pass it to the ARRAY constructor, which works well, except for the performance issue.
I'll appreciate if you can provide some information.
Regards,
Shamik

Are Java Interfaces 'free'?

From a performance point of view, are Java interfaces free?
That is, if I have:
class Foo
public void bar() { ... // some code }
}and I change it to:
interface Foo
public void bar();
class FooImpl implements Foo
public void bar() { ... // some code }
}And I call one or other of the Foos like
Foo foo // A parameter, field or local variable.
foo.bar();Does calling foo through an interface add any overhead that calling it direct in the first example not? As I understand it, all methods are 'virtual' in Java, so it should perform the same in either case.
Thanks for any of your thoughts.
Rupert

rupertlssmith wrote:
YoungWinston wrote:
The Second Rule of Program Optimization (for experts only!): Don't do it yet.
- Michael A. Jackson
Basically, don't worry about it. Worry about writing clear, correct, object-oriented code.
Wierdly enough, in the long run, that is more likely to help than anything else you can do, should (and if) you ever need to worry about optimization in the future.
WinstonThanks for the advice. I can write good clear OO code. I am now at the future and worrying about optimization, so have made it past the second rule!Then you exactly know where your bottleneck is from the profiler you've used. Did it tell you that your interfaces are the bottleneck? If so, why do you even bother to ask here?

Java interfaces allow us to specify limited ways in which otherwise

can anyone explain "Java interfaces allow us to specify limited ways in which otherwise dissimilar classes, from completely different parts of inheritance hierarchy, resemble one another." please?
many thanks.

An interface defines a contract which an implementing class must fulfill. As long as the implementing class is written properly, then it provides a specific, advertised behavior. There are no restrictions as to which classes may implement a given interface (in the sense that there are inheritance restrictions, such as single-inheritance, no inheritance loops, and the like). Therefore, any two arbitrary classes may implement the same interface, and therefore provide the same behavior.
For example, the Iterator interface provides the ability to loop over a collection of objects in a well-defined way. Any class which implements Iterator would be manipulable in the same way, and could therefore be said to resemble each other.

Mediator To Spring Error-Could not convert from java interface to interface

Hi,
I have a requirement to using a Spring component and my composite application would be File Read -> Mediator -> Spring Component -> File Write.
I have to read a file and using mediator map the same to the Spring input and write the Spring component output to a file.
I have created a Java interface ( Package Name - transformtospring , Interface Name - TransformInterface) and also created a Java Class ( TransformImpl ) which implements the Interface in this package. Saved all these artifacts in SCA-INF/src folder of the application.
My Spring Bean configuration file is as follows ( saved the file in the same folder as composite.xml )
<?xml version="1.0" encoding="windows-1252" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:sca="http://xmlns.oracle.com/weblogic/weblogic-sca"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool-2.5.xsd http://xmlns.oracle.com/weblogic/weblogic-sca META-INF/weblogic-sca.xsd">

<bean class="transformtospring.TransformImpl" name="TransformBean"/>
<sca:service name="TransformService" target="TransformBean"
type="transformtospring.TransformImpl"/>
</beans>
I have created a Spring Context which uses the above Spring Configuration. When i tried to map the mediator output to Spring , i'm getting an error shown below.
" Could not convert from java interface to interface type wsdl . Exception=java.lang.ClassNotFoundException transformtospring.TransformImpl "
Please do let me know where exactly i'm doing wrong.
Regards,
Sri.

Hi All,
I could able to work this one out now !!!
But i'm having an issue mapping the input to this service. The method signature for the service is as follows:
public byte[] processData(byte[] input) throws Throwable{
So the input for this Service is a byte array. Now i'm mapping the data from a File Input ( Read File - opaqueElement ) to this service directly ( using mediator ).
Now when i have looked into the message in the Enterprise Manager, following is the message structure from Read File input to the service.
<message>
<properties>
<property name="tracking.compositeInstanceId" value="10009"/>
<property name="tracking.ecid" value="bcd04297e25136e7:4869a9c:13316255efc:-8000-0000000000001f79"/>
<property name="tracking.conversationId" value="TJ9PCcbtu3S0DA0GuxsGx13RYUb1NxHNndfk2PC8ukk."/>
</properties>
<parts>
<part name="parameters">
<ns0:processCollaboration>
<arg0>PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48bnMwOkFkZDJJbnB1dCAgeG1s bnM6eHNpPSdodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZScgeG1sbnM6 bnMwPSd1ay5jby5qZHdpbGxpYW1zLkFkZDJJbnB1dCcgeHNpOnNjaGVtYUxvY2F0aW9uPSd1ay5j by5qZHdpbGxpYW1zLkFkZDJJbnB1dCByZXF1ZXN0LnhzZCcPG5zMDpudW0xPjEwPC9uczA6bnVt MT48bnMwOm51bTI+MTY8L25zMDpudW0yPjwvbnMwOkFkZDJJbnB1dD4=+</arg0>
</ns0:processCollaboration>
</part>
</parts>
</message>
and the corresponding response message ( No output ) back from the service is:
<message>
<properties>
<property name="tracking.compositeInstanceId" value="10009"/>
<property name="tracking.ecid" value="bcd04297e25136e7:4869a9c:13316255efc:-8000-0000000000001f79"/>
<property name="componentName" value="ProcessCollab"/>
<property name="tracking.conversationId" value="TJ9PCcbtu3S0DA0GuxsGx13RYUb1NxHNndfk2PC8ukk."/>
<property name="compositeDN" value="default/CollaborationToSpring!1.0*soa_a8da1da7-f98f-4935-8d20-da9e7bc003cc"/>
</properties>
<parts>
<part name="parameters">
<processCollaborationResponse>
<return/>
</processCollaborationResponse>
</part>
</parts>
</message>
I have included System.out statements in my Java class , but its not printing anything in the logs.
I'm under the impression that the underlying infrastructure ( mediator ) transparently encodes and decodes data from base64Binary to java byte array. So could anyone help me on this !!!
Regards,
Sri.

Implement an business interface in a bean

Is it true that when specifing a number of business interfaces for a bean class with an annotation (@Remote) it not require that the bean class implement the interfaces ??
it sounds weird to me..
if it is possible , then where is the implementation of the interfaces?
thanks in advanced.

If your bean doesn't implement the business interface, you'll need to use annotations (@Remote on the session bean class) or the deployment descriptor to let the container know what the business interfaces are used by the session bean.
For example,
// BusinessIF1.java
package myejbs;
public interface BusinessIF1 { public void doSomething(); }
// BusinessIF2.java
package myejbs;
public interface BusinessIF2 { public void doSomethingElse{}; }
// MySessionBean.java
package myejbs;
@Remote({BusinessIF1.class, BusinessIF2.class})
@Stateless
public class MySessionBean {
public void doSomething();
public void doSomethingElse();
}This isn't recommended, though. You'll lose a compile-time check to make sure that all of your business methods are implemented. You can catch this if you use Sun's verifier tool, though.

Passing implementation of Java interfaces

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