JSF

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JSF Examples

JSF EXAMPLE

Attribute Application
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Tag
<f:attribute>

Tag description: JSF <f:attribute> Tag is use to add an attribute to the UIComponent associated with the enclosing parent tag.

Example :

Step 1: Welcome page of Example

<%--
  Name= welcomeJSF.jsp
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">
<%--
    This file is an entry point for JavaServer Faces application.
--%>
<f:view>
    <html>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
            <title>r4r.co.in</title>
        </head>
        <body>
            <h1><h:outputText value="Tag <f:attribute> Example"/></h1>
            <h:form>
                <h:outputLabel value="Name" />
                <h:inputText value="#{attribute.name}" />
                <h:commandButton id="button" action="#{attribute.submit()}">
                    <f:attribute name="value" value="Click To submit" />
                </h:commandButton>
                <BR><BR>
                           <%-- Display result --%>
                <h:panelGrid rendered="#{attribute.flag!= false}" >
                    Name: <h:outputText value="#{attribute.name}" />
                </h:panelGrid>
            </h:form>            
        </body>
    </html>
</f:view>

Step 2: ManagedBean class for provide logic in program

/*
 * Save as a attributeBean.java
 */
package r4r.JSF2;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
@ManagedBean(name = "attribute")
@RequestScoped
public class attributeBean {
    private String name;
    private boolean flag = false;
    /* -- Getter/Setter -- */
    public boolean isFlag() {
        return flag;
    }
    public void setFlag(boolean flag) {
        this.flag = flag;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    /* -- submit method -- */
    public String submit() {
        flag = true;
        return "submit";
    }
}

 

Output :

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