What is a wrapper class?how to use it in visualforce page?

                 A wrapper or container class is a class, a data structure, or an abstract data type whose instances are collections of other objects. In Apex and Visualforce this type of class can be extremely useful to achieve lot of businees scenario. Here I will supply a simple demo of how wrapper classes can be used.
Visualforce Code:
<apex:page controller="Checkbox_Class" Tabstyle="Account">
  <apex:form >
   <apex:pageBlock Title="List of Accounts" >
    <apex:pageBlockButtons >
     <apex:commandButton value="Display the selected Records" action="{!GetSelected}" rerender="Selected_PBS"/>
         <apex:pageblockSection >
            <apex:pageBlockSection Title="List of Available Accounts" columns="2" >
                <apex:pageblockTable value="{!accounts}" var="a" >
                    <apex:column headerValue="Select" width="60">
                      <apex:inputCheckbox value="{!a.selected}" id="checkedone" />
                    <apex:column headervalue="Account Name" value="{!a.acc.Name}" width="200"/>
                    <apex:column headervalue="Phone" value="{!a.acc.Phone}" width="300"/>
            <apex:pageBlockSection Title="Selected Accounts" id="Selected_PBS">
                <apex:pageblockTable value="{!SelectedAccounts}" var="s"  >
                      <apex:column headervalue="Account Name" value="{!s.Name}" width="30"/>
                      <apex:column headervalue="Phone" value="{!s.Phone}" width="30"/>

Apex controller:
public class Checkbox_Class
List<accountwrapper1> accountList = new List<accountwrapper1>();
    List<Account> selectedAccounts = new List<Account>();
       public List<accountwrapper1> getAccounts()
        for(Account a : [select Id, Name, AccountNumber, Phone from Account limit 5])
        accountList.add(new accountwrapper1(a));
        return accountList;

    public PageReference getSelected()
        for(accountwrapper1 accwrapper : accountList)
        if(accwrapper.selected == true)
        return null;

    public List<Account> GetSelectedAccounts()
        return selectedAccounts;
        return null;

    public class accountwrapper1
        public Account acc{get; set;}
        public Boolean selected {get; set;}
        public accountwrapper1(Account a)
            acc = a;
            selected = false;





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Sfdc Gurukul- All in one place for salesforce and force.com step by step tutorial for beginners: What is a wrapper class?how to use it in visualforce page?
What is a wrapper class?how to use it in visualforce page?
What is a wrapper class?how to use it in visualforce page, wrapper class in apex,visualforce wrapper class,what is a wrapper class,apex wrapper class,using wrapper class in salesforce, wrapper class in salesforce
Sfdc Gurukul- All in one place for salesforce and force.com step by step tutorial for beginners
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