As the title of the article implies, in this post we will be seeing an example which uses radio button in a table in visualforce and allows selecting one of the records in the table.

You can see a demo of the example here - Click here (forcetreedemos)

Visualforce Page:

<apex:page controller="RadioButton" showheader="false">
<apex:form>
<apex:pageblock id="allcons" title="Available Contacts">
               <apex:pageblocktable id="allcons" value="{!AllContacts}" var="allcon">
                    <apex:column headervalue="Set as Primary">                    
                       <apex:actionsupport action="{!selectcon}" event="onclick" rerender="consel,allcons">  
                        <input type="radio" />                    
                            <apex:param name="conid" value="{!allcon.Id}">
                        </apex:param></apex:actionsupport>                            
                    </apex:column>    
                    <apex:column headervalue="Last Name">
                        <apex:outputfield value="{!allcon.LastName}">
                    </apex:outputfield></apex:column> 
                    <apex:column headervalue="First Name">
                        <apex:outputfield value="{!allcon.FirstName}">
                    </apex:outputfield></apex:column>  
                    <apex:column headervalue="Email">
                        <apex:outputfield value="{!allcon.Email}">
                    </apex:outputfield></apex:column>  
                    <apex:column headervalue="Phone">
                        <apex:outputfield value="{!allcon.Phone}">
                    </apex:outputfield></apex:column>  
                </apex:pageblocktable>
</apex:pageblock> 
<apex:pageblock id="consel" title="Selected Contact">
            <apex:pageblocktable id="allcons" value="{!selectedContact}" var="selcon">                       
                    <apex:column headervalue="Last Name">
                        <apex:outputfield value="{!selcon.LastName}">
                    </apex:outputfield></apex:column> 
                    <apex:column headervalue="First Name">
                        <apex:outputfield value="{!selcon.FirstName}">
                    </apex:outputfield></apex:column>  
                    <apex:column headervalue="Email">
                        <apex:outputfield value="{!selcon.Email}">
                    </apex:outputfield></apex:column>  
                    <apex:column headervalue="Phone">
                        <apex:outputfield value="{!selcon.Phone}">
                    </apex:outputfield></apex:column>  
                </apex:pageblocktable>
</apex:pageblock>               
</apex:form>
</apex:page>

Apex Class: RadioButton

public class RadioButton {
List<contact> selectcon;
Public List<contact> getAllContacts()
{
    List<contact> allcons = [Select Id,FirstName,LastName,Email,Phone from Contact limit 5];
    return allcons;
}    
Public void selectcon()
{
    String selcontactid = System.currentPagereference().getParameters().get('conid');
    Contact con = [Select Id,FirstName,LastName,Email,Phone from Contact where Id=:selcontactid];
    selectcon =  new List<contact>();
    selectcon.add(con);
}
Public List<contact> getselectedContact()
{
    return selectcon;
}
}