http://www.scjp-certification.com Sun Certified Java Programmer Certification exam essentials Thu, 09 Sep 2010 06:34:41 +0000 http://backend.userland.com/rss092 en Now days uCertify is tributing to workers across the United States, who work hard every day to contribute to the prosperity of the country. It also officially marks the end of summer. Join the party going on at uCertify in celebration of both! uCertify is providing upto 45% discount + free ... http://www.scjp-certification.com/ucertifys-end-of-summer-sale.html Web service endpoint implementation class is used by the Web service client to access a stateless session bean. It is typically the primary programming artifact for enterprise bean Web service endpoints. It declares the methods that a client can invoke on the service. An interface is not required while ... http://www.scjp-certification.com/what-is-a-web-service-endpoint-implementation-class.html Now days uCertify is anoouncing "Back 2 School Sale" that provide 40% discount on prepkits. Back 2 School sale at Ucertify This time uCertify is also giving additional 5% discount if any customer likes our facebook page. The following is the facebook link: uCertify on Facebook http://www.scjp-certification.com/ucertify-is-announcing-back-2-school-sale.html The Web service endpoint interface is used to define the 'Web services methods'. It is necessary for an enterprise bean that implements the Web service to implement methods having the same signature, as the methods of the Web service endpoint interface. There are a numbers of restrictions exist on which ... http://www.scjp-certification.com/what-is-the-web-service-endpoint-interface.html A remote client is a location independent client of an enterprise bean. A client that runs in the same JVM as a bean instance uses the same API to access the bean as a client that runs in a different JVM on the same or different machine. The remote client ... http://www.scjp-certification.com/what-is-a-remote-client.html A local client of an enterprise bean is location dependent. It provides access to an enterprise bean that requires both the local client and the enterprise bean that provides the local client view to be in the same JVM. A local client must have the following characteristics: The client must run ... http://www.scjp-certification.com/what-is-a-local-client.html Local accessibility is the default accessibility of an enterprise bean. If the bean's business interface is not decorated with @Local or @Remote, and the bean class does not specify the interface using @Local or @Remote, the business interface is by default a local interface. An enterprise bean that allows only ... http://www.scjp-certification.com/how-to-build-an-enterprise-bean-that-allows-only-local-access.html Remote access allows an enterprise bean to run on a different machine with a different Java virtual machine (JVM). An enterprise bean that allows remote access can be created in any of the following ways: By decorating the business interface of the enterprise bean with the @Remote annotation: @Remote public interface InterfaceName { ... http://www.scjp-certification.com/how-to-create-an-enterprise-bean-that-allows-remote-access.html We designed SCSA 310-200 study guide to help you get certified effortlessly. The PrepKit includes: Practice questions with full explanations. Chapter by Chapter study guide. Interactive quizzes. Articles and How tos.. Flash Card Now you don’t need to spend your time and money searching for CX310-200 study materials, CX310-200 : SCSA (Solaris 10) ebooks, CX310-200 : ... http://www.scjp-certification.com/now-days-ucertify-has-announced-its-latest-prepkit-for-solaris-10-scsa-exam.html A constructor without any parameters is known as a default constructor. When a class is defined without any constructor, the Java compiler provides an implicit default constructor. The implicit default constructor is equivalent to the following implementation: class name(){ super(); } When the implicit default constructor of a class is ... http://www.scjp-certification.com/what-is-a-default-constructor.html The following table summarizes the differences between method overriding and method overloading: Method OverridingMethod OverloadingArguments of overridden methods cannot be changed.Arguments of overloaded methods can be changed. Method return types cannot be changed except covariant return types. Return types can be changed.Exceptions must not throw new or broader checked exceptions.Exceptions ... http://www.scjp-certification.com/what-are-the-differences-between-method-overriding-and-method-overloading.html ExceptionsAssertions An exception tells the user of the program that something in the program went wrong.An assertion documents a program. When it fails, it informs that the program has a bug. Exceptions are created to deal with problems that might occur in the program. Assertions are written to state ... http://www.scjp-certification.com/what-are-the-differences-between-exceptions-and-assertions.html According to method overriding, an overriding method must follow the following rules: It must have the same argument list. It must have the same return type, new to Java 5. The return type can be a subclass - this is known as covariant return. It must not have a more restrictive access ... http://www.scjp-certification.com/what-are-the-rules-for-method-overriding.html JavaBean is a reusable software component that can be visually manipulated using the builder tool. The following are the JavaBean Listener naming rules:Listener method names that are used to register a listener with an event source must use the prefix add followed by the listener type. Listener method names that ... http://www.scjp-certification.com/what-are-the-javabean-listener-naming-rules.html A variable arity method allows the number of arguments in a method call to be varied. Invocations of this method may contain more actual parameters than formal parameters. The last parameter for the variable arity method is as follows: The ellipses ( ) is specified between the type and the ... http://www.scjp-certification.com/what-is-a-variable-arity-method.html Following are the characteristics of a message-driven bean: It executes upon receipt of a single client message. It is invoked asynchronously. It is relatively short-lived. It does not represent directly shared data in the database, but it can access and update this data. It can be transaction-aware. It is stateless. Client components invoke methods directly ... http://www.scjp-certification.com/what-are-the-characteristics-of-a-message-driven-bean.html The createSession() method is used to create a session object. If non-transacted sessions are used then the acknowledgement depends on the value specified as the second argument of the createSession method. The following is the general form of the createSession() method: public Session createSession(boolean transacted, int acknowledgeMode) throws JMSException Here, the ... http://www.scjp-certification.com/how-to-set-modes.html The delivery mode of a message depicts whether the messages are lost if the JMS provider fails. The delivery mode can be specified in either of the following two ways: By using the setDeliveryMode() method: This method is used to set the delivery mode for all the messages that are sent ... http://www.scjp-certification.com/how-to-specify-the-delivery-mode-of-a-message.html The delivery mode of a message specifies whether a message will lost if the JMS provider fails. The delivery modes are fields of the DeliveryMode interface. The following are the two delivery modes: Persistent mode: This delivery mode is the default delivery mode. It is used to instruct the JMS provider ... http://www.scjp-certification.com/what-are-the-delivery-mode-of-a-message.html getMessageSelector: This method is used to get the message consumer's message selector expression. Following is the general form of the getMessageSelector method: public java.lang.String getMessageSelector() throws JMSException getMessageListener: This method is used to get the message consumer's MessageListener. Following is the general form of the getMessageListener method: public MessageListener getMessageListener() throws ... http://www.scjp-certification.com/what-are-the-getmessageselector-and-getmessagelistener-methods.html The Form-based authentication is a type of authentication mechanism. It allows the developer to control the look and feel of the login authentication screens by customizing the login screen and error pages that an HTTP browser presents to the end user. The following actions occur when form-based authentication is declared: ... http://www.scjp-certification.com/what-is-the-form-based-authentication-technique.html The <security-role-ref> element is used to specify the declaration of a security role reference in the web application's code. The declaration of the element consists of the following elements:<description>:It is an optional element that specifies the information about the reference.<role-name>:It is used to specify the security role name used in ... http://www.scjp-certification.com/what-is-the-security-role-ref-element.html