Nancy Antony

Hi Ranchers,

I am preparing for Oracle SOA Suite 11g Certified Implementation Specialist. Where can I find Good Mock test to know the level of difficulty and prepare better.

Nancy

Hi Ranchers,

I passed 1Z0-897, Oracle Certified Expert Java EE6 Web Services exam

Nancy

Hi Ranchers,

I am member from quite a number of years now...

I passed my OCM for Java EE Architecture wirh 86% marks.

Nancy

what is the difference between "<h:inputText value="#{myBean.myProperty}/> and <h:inputText binding="#{myBean.myProperty}/>"

I created these beans :

package mybeans; import java.io.Serializable; import javax.faces.bean.ManagedBean; import javax.faces.bean.SessionScoped; @ManagedBean(name="myMessage") @SessionScoped public class MyMessageBean implements Serializable{ private static final long serialVersionUID = 1L; private String sayHello = "Hello from JSF 2.0"; public String getSayHello() { return sayHello; } public void setSayHello(String sayHello) { this.sayHello = sayHello; } } package mybeans; import java.io.Serializable; import javax.faces.bean.ManagedBean; import javax.faces.bean.ManagedProperty; import javax.faces.bean.SessionScoped; @ManagedBean @SessionScoped public class MyBean implements Serializable{ private static final long serialVersionUID = 1L; @ManagedProperty(value="#{myMessage}") private MyMessageBean myMessageBean; public void setMyMessageBean(MyMessageBean myMessageBean) { this.myMessageBean = myMessageBean; } public MyMessageBean getMyMessageBean() { return myMessageBean; } private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getSayHello(){ //check if null? if("".equals(name) || name ==null){ return ""; }else{ return myMessageBean.getSayHello() + name; } } }

I'd like to use how can I use this bean in facelet to set and get its values? Any good coding based book or tutorial on JSF 2.0.

Hi Ranchers,

I want to take Web Services Certification for Java EE6 i.e. 1Z0-897 exam. Can I find some practice exams from Oracle itself. Which books to follow?

Nancy

I tried the suggestions, but it didn't work.

I got this stack trace : I'm using Glassfish 3.1

Nov 9, 2011 8:00:08 PM com.sun.enterprise.transaction.JavaEETransactionManagerSimplified initDelegates
INFO: Using com.sun.enterprise.transaction.jts.JavaEETransactionManagerJTSDelegate as the delegate
javax.naming.NamingException: Lookup failed for 'java:global/HelloBean/SayHello!hello.SayHelloRemote' in SerialContext ,orb'sInitialHost=localhost,orb'sInitialPort=3700 [Root exception is javax.naming.NameNotFoundException: HelloBean]
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:442)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at allworld.TestBeanSaysHello.main(TestBeanSaysHello.java:21)
Caused by: javax.naming.NameNotFoundException: HelloBean
at com.sun.enterprise.naming.impl.TransientContext.resolveContext(TransientContext.java:252)
at com.sun.enterprise.naming.impl.TransientContext.lookup(TransientContext.java:171)
at com.sun.enterprise.naming.impl.TransientContext.lookup(TransientContext.java:172)
at com.sun.enterprise.naming.impl.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:58)
at com.sun.enterprise.naming.impl.RemoteSerialContextProviderImpl.lookup(RemoteSerialContextProviderImpl.java:89)
at sun.reflect.GeneratedMethodAccessor69.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie.dispatchToMethod(ReflectiveTie.java:146)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:176)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:682)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:216)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1841)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1695)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:1078)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:221)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:797)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.dispatch(CorbaMessageMediatorImpl.java:561)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.doWork(CorbaMessageMediatorImpl.java:2558)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:492)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)

Any help ?

I create a Remote Stateless session Bean with the following simple code
package hello; import javax.ejb.Remote; @Remote public interface SayHelloRemote { public String sayHelloToAll(); }

And Class Implementation is :
package hello; import javax.ejb.Stateless; @Stateless public class SayHello implements SayHelloRemote { // Add business logic below. (Right-click in editor and choose // "Insert Code > Add Business Method") public String sayHelloToAll(){ return "Hello to All Java/JEE developers..."; } }

And I wrote a Java SE Client as follows:

package allworld; import javax.naming.Context; import javax.naming.InitialContext; import hello.*; public class TestBeanSaysHello { public static void main(String[] args) { try{ Context ctx = new InitialContext(); SayHelloRemote sayHello = (SayHelloRemote)ctx.lookup("java:global/HelloBean/SayHelloRemote"); String s= sayHello.sayHelloToAll(); System.out.println("Bean Says :"+s); }catch(Exception e){ System.out.println("Exception executing Bean : "+e); } } }

I added HelloBean Project in library and gf-client.jar from glassfish modules. When I run this I get :

Nov 9, 2011 8:02:58 AM com.sun.enterprise.transaction.JavaEETransactionManagerSimplified initDelegates
INFO: Using com.sun.enterprise.transaction.jts.JavaEETransactionManagerJTSDelegate as the delegate

and it keeps running infinitely

Can anyone help?

Hi Ranchers,

Can anyone suggest ?
which book to follow?
where to get practice questions?

Thanks,
Nancy

I installed JDK6. And when I write a simple program with assertion it neither works in command prompt nor in Netbeans6.9. I think if it will work in command prompt it will work in JDK. I tried java -ea both in command prompt as well as in Netbeans VM options. Any idea why its not working.

Regards,
Nancy

Thanks Ralph. I'm certainly looking at much more than this.that is how internal implementation of method call happens. I understand that all non-final methods by default are like virtual methods in Java. I wanted to see how parentRef=ChildObj denies to call a pure child method, the real tracing by JVM to implement method invocation.

Regards,
Nancy

Hey Ranchers,

C++ handles runtime polymorphism with virtual pointers and virtual tables. How does Java do it? I know the process, no issues I'd like to know its internals. Any idea? Any website? Anyhting...

Thanks
nancy

Hi Ranchers,

when I write int i=-1;

i=i>>>31;
System.out.println(i); // i is 1 understood

when I write

int i=-1;
i=i>>>32;
System.out.println(i); // value is -1

Why so?

Regards,
Nancy

Constructor does not allocate memory for the object/instance, that is done by new. what is the role of constructor is to initialize the instance variables. Now there are two issues which needs attention and I'd like to confirm with you ranchers

1. when I donot write any constructor in my class Java provides one, which we usually say that intializes the instance variables to their default values, but I think default construtor doesn't do anything as any variable screated on heap is automatically initialized, am I right?

2. What does constructor returns ? Current Object i.e this that means object reference as this is a reference to the current object. So I understand the process as such. new allocates memry and constructor is called by passing this to the constructor and the only code which is present in default constructor is return this and in paramterized constructor , return this statement is automatically added?

Any suggestions or additions....

Hi,

Problem is when I want to print unicode character in Java program

say char ch1='\u6789', ch2='\u67f9';

When I print it using System.out.println(ch1+" "+ch2); // output is ? ?

I'm not able to print actual character which is suppose to be printed, say chinese or japanese character.

How can I work with unicode character set which works well?

Nancy