Salesforce

Please find below an example of how to accomplish this.

I've included 2 ways to do this:
Using a single query

Using a wrapper class My controller (AccountContactWrapperController.class): 

public class AccountContactWrapperController {

    public List<Account> accounts{get;set;}
    public List<ACWrapper> ACWrappers{get;set;}

    public AccountContactWrapperController(){
        this.ACWrappers = new List<ACWrapper>();
        this.accounts = new List<Account>();

        //Get Accounts & Related Contacts in 1 query
        List<Account> accs = [Select Id, Name, (Select Id, FirstName, LastName From Contacts) From Account Limit 1];
        this.accounts = accs;

        //Get Accounts & Contacts in separate queries for Wrapper
        List<Account> accsForWrapper = [Select Id, Name From Account Limit 1];
        List<Contact> consForWrapper;
        Account acc;
        if(accsForWrapper != null && !accsForWrapper.isEmpty()){
            acc = accsForWrapper.get(0);
            consForWrapper = [Select Id, FirstName, LastName From Contact Where AccountId =:acc.Id];
        }
        if(consForWrapper != null){
            ACWrapper wrapper = new ACWrapper(acc, consForWrapper);
            this.ACWrappers.add(wrapper);
        }
    }

    public class ACWrapper{
        public Account account{get;set;}
        public List<Contact> contacts{get;set;}

        public ACWrapper(Account acc, List<Contact> cons){
            account = acc;
            contacts = cons;
        }
    }

}


My VF page (AccountContactWrapperTest.page): 

<apex:page controller="AccountContactWrapperController" >
<apex:form >

<!--Display Account & Contact info from 1 Query-->
<apex:pageBlock title="Info From Query">
<apex:pageBlockTable value="{!accounts}" var="a">
<apex:Column value="{!a.Name}" />
<apex:Column headerValue="Contact Names">
<apex:repeat value="{!a.Contacts}" var="c">
{!c.FirstName} {!c.LastName} <br />
</apex:repeat>
</apex:Column>
</apex:pageBlockTable>
</apex:pageBlock>

<!--Display Account & Contact info from 1 Wrapper class-->
<apex:pageBlock title="Info From Wrapper class">
<apex:pageblocktable value="{!ACWrappers}" var="w">
<apex:Column value="{!w.account.Name}" />
<apex:column headervalue="Contact Names">
<apex:repeat value="{!w.contacts}" var="c">
{!c.FirstName} {!c.LastName} <br/>
</apex:repeat>
</apex:column>
</apex:pageblocktable>
</apex:pageBlock>
</apex:form>
</apex:page> 


      Output: