How to add select check box after displaying Lead and Contact records in visualforce page?

Hello,

try this code below,I hope this will help you:-

Visulforce page code:
<apex:page controller="wrapperClassController">
<apex:form >
<apex:pageBlock >
<apex:pageBlockButtons >
<apex:commandButton value="Process Selected" action="{!processSelected}" rerender="test"/>
</apex:pageBlockButtons>
<apex:pageBlockTable value="{!contacts}" var="c" >
<apex:column >
<apex:inputCheckbox value="{!c.selected}"/>
</apex:column>
<apex:column value="{!c.con.Name}" />
<apex:column value="{!c.con.Email}" />
<apex:column value="{!c.con.Phone}" />
</apex:pageBlockTable>
</apex:pageBlock>
<apex:pageBlock id="test">
Total No of Selected Records :<apex:outputText value="{!value }"/>
<apex:pageBlockTable value="{!SelectedContacts}" var="c" >
<apex:column value="{!c.Name}" />
<apex:column value="{!c.Email}" />
<apex:column value="{!c.Phone}" />
</apex:pageBlockTable>
</apex:pageBlock>
</apex:form>
</apex:page>

Apex Code:

public class wrapperClassController {
public List<cContact> contactList {get; set;}
public List<Contact> selectedContacts{get;set;}
public Integer value {get;set;}
public List<cContact> getContacts() {
if(contactList == null) {
contactList = new List<cContact>();
for(Contact c : [select Id, Name, Email, Phone from Contact limit 10]) {
contactList.add(new cContact(c));
}
}
return contactList;
}
public PageReference processSelected() {
selectedContacts = new List<Contact>();
for(cContact cCon : getContacts()) {
if(cCon.selected == true) {
selectedContacts.add(cCon.con);
}
}
value = selectedContacts.size();
System.debug('printingtcontc'+selectedContacts.size());
return null;
}
public List<Contact> getSelectedContacts(){
System.debug('printingtcontc inside get'+selectedContacts.size());
if(selectedContacts.size()>0eturn selectedContacts;
else return null;
}
public class cContact {
public Contact con {get; set;}
public Boolean selected {get; set;}
public cContact(Contact c) {
con = c;
selected = false;
}
}
}