While run a following code i have got error like 
[Error] Error: Mycontroller Compile Error: Illegal assignment from List<Account> to Account at line 6 column 3
Can anybody give a solution ?
CODE:
<apex:page controller="Mycontroller" tabStyle="Account">
<apex:form >
<apex:pageBlock title="Account Details">
<apex:pageBlockSection title="Account information">
    <apex:inputField value="{!Account.Name}"/>
    <apex:inputField value="{!account.Phone}"/>
    <apex:inputField value="{!account.Industry}"/>
    <apex:inputField value="{!account.Website}"/>
</apex:pageBlockSection>
<apex:pageBlockSection title="Account Details">
    <apex:inputField value="{!Account.Fax}"/>
    <apex:inputField value="{!Account.Shippingcity}"/>
    <apex:inputField value="{!Account.AnnualRevenue}"/>     
</apex:pageBlockSection>
<apex:pageBlockButtons>
 <apex:commandButton action="{!Save}" value="Save"/>
</apex:pageBlockButtons>
</apex:pageBlock>
</apex:form>
</apex:page>
CLASS:
public with sharing class Mycontroller
{
 Public Account acc;
 Public Mycontroller()
 {
  acc=[SELECT id,Name,Phone,Industry,Website,Fax,Shippingcity,AnnualRevenue from account Where id=:ApexPages.currentpage().getparameters().get('id')];
  }
 Public account getaccount()
 {
  return acc;
  }
 Public Pagereference Save()
 {
 update acc;
 pagereference page=new Apexpages.StandardController(acc).view();
  return Page; 
 }
}

Hai Everyone,

I wirtten sample VFpage code. It shows error "System.LimitException: Maximum stack depth reached: 1001 ".Can any please Explain this One?
    <apex:page controller="AccountWizardController" tabStyle="Account">
  <apex:sectionHeader title="Account Wizard" subtitle="Step 1 of 3"/>
  <apex:form >
    <apex:pageBlock >
     </apex:pageBlock>
  </apex:form>
</apex:page>
Class: public with sharing class AccountWizardController 
{
  Public Account acc{get; set;}
 Public AccountwizardController()
 {
  Account acc=new account();
  }
}

Hai,
 Batch apex code for account filedupdate: Getting below error,can anybody help me?
[Error] Error: Compile Error: Argument type of global method must also be global: List<Account> at line 9 column 17

CODE:
global class Accountupdate implements Database.Batchable<sObject>
{
    global Database.QueryLocator start(Database.BatchableContext BC)
    {
        String query = 'SELECT Id,Name,Phone FROM Account ';
        return Database.getQueryLocator(query);
    }

    global void execute(Database.BatchableContext BC, List<Account> scope)
    {
        for (Account a : scope)
        {
           a.Phone='123';
        }
        update a;
    }  
    global void finish(Database.BatchableContext BC)
    {
    }
}

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how to find profile name of current user in trigger and how to write the test class for that trigger

hello,
Here's the error message I'm getting when trying to save my page:
Error:Error: Unknown property 'String.name'      Can  any one help me
VF code:
<apex:page controller="Accountonclickconlist" sidebar="false" id="pcc">
<apex:form >
  <apex:pageBlock id="pgbl">
   <apex:pageBlockSection title="Accounts" id="pgbs">
     <apex:pageblockTable value="{!Accounts}" var="account" id="pgbtable">
      <apex:column headerValue="account name"/>
       <apex:commandLink value="{!account.name}" reRender="Contactblock">
        <apex:actionSupport event="onclick" action="{!getrelatedcontactlist}" reRender="contactbl">
          <apex:param name="accountid" assignTo="{!accountid}" value="{!account.id}">
          </apex:param>
          </apex:actionsupport>
          </apex:commandlink>   
     </apex:pageblockTable>
   </apex:pageBlockSection> 
  </apex:pageBlock>
    <apex:pageBlock id="contactbl">
     <apex:pageBlockSection title=" Contacts">
      <apex:pageBlockTable value="{!contacts}" var="contact">
        <apex:column headerValue="firstname" value="{!contact.firstname}"/>
        <apex:column headerValue="Lastname" value="{!contact.lastname}"/>  
      </apex:pageBlockTable>
     </apex:pageBlockSection>
    </apex:pageBlock>
</apex:form> 
</apex:page>

Class:
public with sharing class Accountonclickconlist 
{
 public list<account>accountlist{set;get;}
 public list<contact>contactlist{set;get;}
 public id accountid{set;get;}
   public Accountonclickconlist()
   {
    accountlist=new list<account>();
    contactlist=new list<contact>();
     accountlist=[select id,name from account limit 50];
     }
    public void getrelatedcontactlist()
    {
       contactlist=[select id, Lastname, Firstname from contact WHERE Accountid=:Accountid limit 50];
       }

}

 

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Hai,
 Batch apex code for account filedupdate: Getting below error,can anybody help me?
[Error] Error: Compile Error: Argument type of global method must also be global: List<Account> at line 9 column 17

CODE:
global class Accountupdate implements Database.Batchable<sObject>
{
    global Database.QueryLocator start(Database.BatchableContext BC)
    {
        String query = 'SELECT Id,Name,Phone FROM Account ';
        return Database.getQueryLocator(query);
    }

    global void execute(Database.BatchableContext BC, List<Account> scope)
    {
        for (Account a : scope)
        {
           a.Phone='123';
        }
        update a;
    }  
    global void finish(Database.BatchableContext BC)
    {
    }
}

how to find profile name of current user in trigger and how to write the test class for that trigger