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Backing bean to support el intro article

jsf/src/main/java/com/baeldung/springintegration/ELSampleBean.java

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+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.baeldung.el.controllers;
+
+import java.util.Random;
+import javax.annotation.PostConstruct;
+import javax.faces.application.Application;
+import javax.faces.application.FacesMessage;
+import javax.faces.bean.ManagedBean;
+import javax.faces.bean.ViewScoped;
+import javax.faces.component.html.HtmlInputText;
+import javax.faces.context.FacesContext;
+
+/**
+ *
+ * @author Tayo
+ */
+@ManagedBean(name = "ELBean")
+@ViewScoped
+public class ELSampleBean {
+
+    private String firstName;
+    private String lastName;
+    private String pageDescription = "This page demos JSF EL Basics";
+    private int pageCounter;
+    private Random randomIntGen = new Random();
+
+    @PostConstruct
+    public void init() {
+        pageCounter = randomIntGen.nextInt();
+    }
+    
+    public void save(){
+        
+    }
+
+    public void saveFirstName(String firstName) {
+       this.firstName = firstName;
+    }
+    
+      
+    public void saveByELEvaluation(){
+        firstName = (String)evaluateEL("#{firstName.value}", String.class);
+        FacesContext ctx = FacesContext.getCurrentInstance();
+        FacesMessage theMessage = new FacesMessage("Name component Evaluated: "+firstName);
+        theMessage.setSeverity(FacesMessage.SEVERITY_INFO);
+        ctx.addMessage(null,theMessage);
+       
+    }
+
+    private Object evaluateEL(String elExpression, Class<?> clazz) {
+        Object toReturn = null;
+        FacesContext ctx = FacesContext.getCurrentInstance();
+        Application app = ctx.getApplication();
+        toReturn = app.evaluateExpressionGet(ctx, elExpression, clazz);
+        
+        return toReturn;
+
+    }
+
+    /**
+     * @return the firstName
+     */
+    public String getFirstName() {
+        return firstName;
+    }
+
+    /**
+     * @param firstName the firstName to set
+     */
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    /**
+     * @return the lastName
+     */
+    public String getLastName() {
+        return lastName;
+    }
+
+    /**
+     * @param lastName the lastName to set
+     */
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    /**
+     * @return the pageDescription
+     */
+    public String getPageDescription() {
+        return pageDescription;
+    }
+
+    /**
+     * @param pageDescription the pageDescription to set
+     */
+    public void setPageDescription(String pageDescription) {
+        this.pageDescription = pageDescription;
+    }
+
+    /**
+     * @return the pageCounter
+     */
+    public int getPageCounter() {
+        return pageCounter;
+    }
+
+    /**
+     * @param pageCounter the pageCounter to set
+     */
+    public void setPageCounter(int pageCounter) {
+        this.pageCounter = pageCounter;
+    }
+}