javabeans

At which phase of the JSF request processing lifecycle, the backing bean method marked with @PostConstruct called? Adeel Ansari Methods marked with the @PostConstruct will be invoked after the bean has been created, dependencies have been injected, all managed properties are set, and before the bean is actually set into scope. Found related SO thread , might not be exactly same but it answers your question. And a blog entry explaining the same. 来源： https://stackoverflow.com/questions/4061935/when-method-marked-with-postconstruct-called

I have the following property file defined in one of my Spring (3.1) XMLs: <context:property-placeholder location="classpath:MyConfigFile.properties"/> I want to be able to define a second optional property file which will override the "MyConfigFile.properties" file and will get loaded instead of it. In Other words I want my application to load the "MyConfigFile.properties" file, but if a "StrogerConfigFile.properties" will be available at the classpath- it will get loaded instead. Anyone knows how it can be done using the Spring XML? <context:property-placeholder location="file:///[path]

how do I dynamically change the properties of a bean at runtime using java spring? I have a bean mainView, which should use as property "class" either "class1" or "class2". This decision should be made on base of an property-file, where the property "withSmartcard" is "Y" or "N". ApplicationContext: <bean id="mainView" class="mainView"> <property name="angebotsClient" ref="angebotsClient" /> <property name="class" ref="class1" /> </bean> <bean id="class1" class="class1"> <constructor-arg ref="mainView" /> </bean> <bean id="class2" class="class2"> <constructor-arg ref="mainView" /> </bean>

1.Where is the usage of serialization in a webapplication. 2.Is it necessary that a form bean is serializable. 3.In tomcat what is the usage of sessions.ser file.. 1) It is an app server dependent feature but the Servlet Spec says that if the servlet container wants to support distributed environments (sharing sessions across instances) and the like that it must accept objects that implement Serializable and be able to migrate them. Tomcat also supports storing the session state across server restarts for session objects that are serializable. You can turn this feature of Tomcat on or off in

I am new to the JSP and server side programming. Till now I am working with Servlets and java classes. I am segregating my application (as per MVC model) with the help of java classes. I would like to know difference between java beans and java classes. And in which scenario I can use a java bean instead of a java class. Any helpful explanation or helpful links? A Java bean is just a class which conforms to some conventions: properties that can be accessed by getters (and setters if those properties are not read-only) no-arg public constructor serializable The JSP EL and tags are designed

Is there a way to auto-cast Spring beans to the class defined in the application context XML? I'd like to avoid putting type information about the beans in 2 places.... in the xml configuration file and also in the code as a cast. For instance, given this config file <bean id="bean-name" class="SimpleSpringBean" scope="prototype"> <property name="myValue" value="simple value"></property> </bean> Can I call ApplicationContext.getBean("bean-name") in such a way as to avoid directly casting the return type to SimpleStringBean . I know I can also call ApplicationContext.getBean("bean-name",

I have this configuration on my web application. 2 beans : 1° Bean - It checks the login; @ManagedBean(name="login") @SessionScoped public class Login { private String nickname; private String password; private boolean isLogged; public String getNickname() { return nickname; } public void setNickname(String newValue) { nickname=newValue; } public String getPassword() { return password; } public void setPassword(String newValue) { password=newValue; } public void checkLogin() { ... i check on db the nickname and the password ... if(USER EXIST) { isLogged=true; } else { isLogged=false; } return