Ajax Core

Input

Button

Data

Panel

Overlay

Menu

Charts

Message

Multimedia

File

DragDrop

Dialog Framework

Misc

<h:form>
	<h:panelGrid columns="2" cellpadding="5">
		<h:outputText value="Counter: " />
		<h:outputText id="txt_count" value="#{counterBean.count}" />		
	</h:panelGrid>

    <p:commandButton value="Count"
				actionListener="#{counterBean.increment}" update="txt_count"/>
</h:form>

package org.primefaces.examples.view;

import java.io.Serializable;

public class CounterBean implements Serializable{

	private int count;

	public int getCount() {
		return count;
	}

	public void setCount(int count) {
		this.count = count;
	}
	
	public void increment() {
		count++;
	}
}