JSF Archives

Jsf application events example

JSF provides system event listeners to handle application events which fired when application start or stop or during JSF lifecycle. JSF application events: Application Event Description PostConstructApplicationEvent JSF fires PostConstructApplicationEvent when application starts. It can be used to perform initialization tasks after application has started. PreDestroyApplicationEvent JSF fires PreDestroyApplicationEvent when application is about to shut … Read more

Jsf actionlistener event example

JSF fired action events when user clicks on a button or link component like h:commandButton or h:commandLink etc. An action event can be handled by following ways: 1. Method Binding. 2. ActionListener Interface. Method Binding: Use the managed bean method directly into actionListener attribute of the corresponding JSF component. Bean class: @ManagedBean(name="testBean") @SessionScoped public class … Read more

jsf valueChangeListener example

JSF fired value change events when user make changes in input components like h:inputText or h:selectOneMenu etc. A value change event can be handled by following ways: 1. Method Binding. 2. ValueChangeListener Interface. Method Binding: Use the managed bean method directly into valueChangeListener attribute of the corresponding JSF component. Bean class: @ManagedBean(name="testBean") @SessionScoped public class … Read more

Jsf event handling tutorial

Event: Happening of something is known as an event. JSF event handling: In JSF when a button is clicked or change value in text filed etc then corresponding JSF component create an instance of the corresponding event class and adds the event to the event list. After adding the event in the event list JSF … Read more

Jsf custom validator example

Let us discuss how to create custom validator in JSF with example. Steps to create custom validator in JSF: 1. First create a validator class by implementing javax.faces.validator.Validator interface 2. Override validate() method of above interface. 3. Assign a unique validator ID to the custom validator by using @FacesValidator annotation. 4. Use custom validator class … Read more

Jsf validateRequired example

JSF f validateRequired tag: JSF f:validateRequired tag is used to validate that the input field is not empty. Syntax: <f:validateRequired /><f:validateRequired /> Example: test.xhtml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core"> <h:head> <title>JSF f validate required example.</title> </h:head> <h:body> <h2>JSF f validate required example.</h2> <h:form> … Read more

Jsf validateRegex example

JSF f validateRegex tag: JSF f: validateRegex tag is used to validate JSF component with a given regular expression pattern. Syntax: <f:validateRegex pattern="regularExpressionPatern" /><f:validateRegex pattern="regularExpressionPatern" /> JSF f validateRegex tag attribute: Attribute Description pattern Formatting pattern Example: test.xhtml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core"> <h:head> … Read more

Jsf validateDoubleRange example

JSF f validateDoubleRange tag: JSF f: validateDoubleRange tag is used to validate the range of a float value. Syntax: <f:validateDoubleRange minimum="m.a" maximum="n.b" /><f:validateDoubleRange minimum="m.a" maximum="n.b" /> JSF f validateDoubleRange tag attribute: Attribute Description 1. minimum It specify minimum double value within an optional range 2. maximum It specify maximum double value within an optional range … Read more

Jsf validateLongRange example

JSF f validateLongRange tag: JSF f: validateLongRange tag is used to validate the range of a numeric value. Syntax: <f:validateLongRange minimum="m" maximum="n" /><f:validateLongRange minimum="m" maximum="n" /> JSF f validateLongRange tag attribute: Attribute Description 1. minimum It specify minimum long value within an optional range 2. maximum It specify maximum long value within an optional range Example: … Read more

Jsf validateLength example

JSF f validateLength tag: JSF f:validateLength tag is used to validate the length of a string. Syntax: <f:validateLength minimum="m" maximum="n" /><f:validateLength minimum="m" maximum="n" /> JSF f validateLength tag attribute: Attribute Description 1. minimum It specify minimum number of characters 2. maximum It specify maximum number of characters Example: test.xhtml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD … Read more