Hi,

Why this err occr actually i want to pass the parameter where do i write with in metho r other class...

public class kathir_clsLand {

    public Account acct{get; set;}
    public static String accid;
    public static String qryString;
    public static List<Level1s__c> lstLevel1Tree;
    public static List<Level1s__c> lstLevel1;
    public static List<Level2s__c> lstLevel2; 
    public static List<Level3s__c> lstLevel3;
    public static List<Level4s__c> lstLevel4; 
    public String searchinput {get;set;}
    public List<Level1__c> lstsearch {get;set;} 
    public List<Level2__c> lstsearch2 {get;set;} 
    public List<Level3__c> lstsearch3 {get;set;} 
    public List<Level4__c> lstsearch4 {get;set;} 
    public List<Level5__c> lstsearch5 {get;set;} 
    public List<Level6__c> lstsearch6 {get;set;} 
    public String lurl{get;set;}
    public String state{get; set;}
 public String SearchText {get; set;}
 public Level1__c le1;
 
    public ApexPages.StandardController stdController; 
   public kathir_clsLand(ApexPages.StandardController con)
    {
        stdController = con;
        accid = ApexPages.currentPage().getParameters().get('id');
        lurl=ApexPages.currentPage().getParameters().get('levid');
        this.acct = (Account)con.getRecord();
       // this.le1= (Level1__c)con.getRecord();
        system.debug('*********'+acct);
        Integer j; 
        Integer k;
        // lstLevel1Tree = [Select id, name,(select account__r.name from Level1s__r where account__c =:accid ) from Level1s__c where id in (Select cLevel1__c from Level1__c where Account__c=:accid) ]; 
          if(ApexPages.currentPage().getParameters().get('S') == null)
          {
           lstLevel1 = [Select Id, Name,Description__c,(select account__r.name from Level1s__r where account__c =:accid ),(select id, name from Level2s__r limit 1) from level1s__c  order by Name ];
          // lstLevel4 = [Select Id,name,Level3__c,(select id, account__r.name from Level4s__r where account__c =: + accid ) from Level4s__c ];  
          }else
          {
           lstLevel1 = [Select id, name,(select account__r.name from Level1s__r where account__c =:accid ) from Level1s__c where id in (Select cLevel1__c from Level1__c where Account__c=:accid) ];
         //  lstLevel4 = [Select Id,name,Level3__c,(select id, account__r.name from Level4s__r where account__c =: + accid ), (select id from cusLevel5s__r limit 1) from Level4s__c  where id in (Select cLevel4__c from Level4__c where Account__c=:accid) ];  
         } 
         
            if(ApexPages.currentPage().getParameters().get('S') == null)
            {
                Level='All';   
            }
            else
            {
            Level='Selected Only';
            } 
            
            
    }        
    /* search*/
    
    public void searchmethod()
    {
        String url = ApexPages.currentPage().getParameters().get('levid');
        String urls = ApexPages.currentPage().getParameters().get('id');
        if(url != '' && url != null)
        {
            system.debug('$$$$$$$$$$$$$$$$$$$$$$state '+searchinput );
           if(searchinput != null)
           {
           
            lstsearch = [Select Level1__c,Name,cLevel1__r.Name, AccountName__c, Account__c ,cLevel1__c from Level1__c where cLevel1__c=:url   and  AccountName__c LIKE :(searchinput+'%') limit 500];
            lstsearch2 = [Select Level2__c,Name,cLevel2__r.Name, AccountName__c, Account__c ,cLevel2__c from Level2__c where cLevel2__c=:url   and  AccountName__c LIKE :(searchinput+'%') limit 500];
            lstsearch3 = [Select Level3__c,Name,cLevel3__r.Name, AccountName__c, Account__c ,cLevel3__c from Level3__c where cLevel3__c=:url  and  AccountName__c LIKE :(searchinput+'%') limit 500];
            lstsearch4 = [Select Level4__c,Name,cLevel4__r.Name, AccountName__c, Account__c ,cLevel4__c from Level4__c where cLevel4__c=:url   and  AccountName__c LIKE :(searchinput+'%') limit 500];
            lstsearch5 = [Select Level5__c,Name,cLevel5__r.Name, AccountName__c, Account__c ,cLevel5__c from Level5__c where cLevel5__c=:url  and  AccountName__c LIKE :(searchinput+'%') limit 500];
            lstsearch6 = [Select Level6__c,Name,cLevel6__r.Name, AccountName__c, Account__c ,cLevel6__c from Level6__c where cLevel6__c=:url  and  AccountName__c LIKE :(searchinput+'%') limit 500];

            system.debug('****search****'+lstsearch);
           // return lstLevel11 ;
           }
          
        }
    }
    
    /*radio*/
    public List<SelectOption> getItems()
{
   List<SelectOption> options = new List<SelectOption>(); 
   options.add(new SelectOption('All','All')); 
   options.add(new SelectOption('Selected Only','Selected Only'));     
   return options; 
}        
        
public string Level;           
public String getLevel() 
{
return Level;
}
public void setLevel(String Level) 
{ 
this.Level= Level; 
}
/*cuslevel start  */

    public class Level1sClass 
    {
        public String accURL;
        public string acid1{ get; set; }
        public Level1s__c lev1{ get; set; }
        public Level1s__c lev1Tree{ get; set; }
       // public Level1__c lev1AccTree{ get; set; }
        public Level1__c lev1IDTree{ get; set; }
        public List<Level2sClass> lev2 {get; set;}
        public List<Level2sClass> lev2Tree {get; set;}
        public integer chkcountL1 {get; set;} 
        public Boolean selected {get; set;}
        public Level1sClass(Level1s__c gp)
        {
            accURL= ApexPages.currentPage().getParameters().get('id');
            lev1 = gp;
            lev1Tree = gp;
            acid1 = accURL;
        /*    List<Level1__c> treelst1 = [Select Level1__c,Name,CusLevel1Name__c, AccountName__c, Account__c ,cLevel1__c from Level1__c where Account__c=:accURL];
            for(Level1__c le1: treelst1)
            {
             lev1IDTree =  le1;
             
            } */
           
            lev2 = getList2Details(gp); 
          //  lev2Tree = getTreeLevel2list(gp);
           
            if(accURL!= '' && accURL!= null)
            {
                  chkcountL1 = gp.Level1s__r.size();
                    if(chkcountL1  > 0 )
                        {
                            selected = true;
                           
                        }
                        else
                        {
                            selected = false;
                              
                        }
                      
             }  
 
        }
     }       
    public class Level2sClass
    {
        public String accURL;
        public level2s__c lev2 {get; set;}
        public level2s__c lev2Tree {get; set;}
        public Level2__c lev2IDTree{ get; set; }
        public List<Level3sClass> lev3 {get; set;}
        public List<Level3sClass> lev3Tree {get; set;}
        public Boolean selected {get; set;}
        public integer chkcountL2 {get; set;} 
        public Level2sClass(Level2s__c l2)
        {
           accURL= ApexPages.currentPage().getParameters().get('id');
           lev2 = l2;
           lev2Tree = l2;
         /*  List<Level2__c> treelst2 = [Select Level2__c,Name,CusLevel2Name__c, AccountName__c, Account__c ,cLevel2__c from Level2__c where Account__c=:accURL];
            for(Level2__c le1: treelst2)
            {
             lev2IDTree =  le1;
             
            } */
           lev3 = getList3Details(l2);
          // lev3Tree = getTreeLevel3list(l2);
          
           chkcountL2  = l2.Level2s__r.size();
            if(chkcountL2  > 0 )
            {
                selected = true;
               
            }
            else
            {
                selected = false;
                  
            }           
        }
    } 
    public class Level3sClass
    {
        public Level3s__c lev3 {get; set;}
        public Level3__c lev3IDTree{ get; set; }
        public List<Level4sClass> lev4 {get; set;}
        public Boolean selected {get; set;} 
        public integer chkcountL3{get; set;} 
        public Level3sClass(Level3s__c l3)
        {
            lev3 = l3;
          /*     List<Level3__c> treelst3 = [Select Level3__c,Name,CusLevel3Name__c, AccountName__c, Account__c ,cLevel3__c from Level3__c where Account__c=:accid];
            for(Level3__c le1: treelst3 )
            {
             lev3IDTree =  le1;
             
            }  */
            
            lev4 = getList4Details(l3);
            chkcountL3  = l3.Level3s__r.size();
            if(chkcountL3  > 0 )
            {
                selected = true;
               
            }
            else
            {
                selected = false;
                  
            }         
        }
    }
    public class Level4sClass
    {
        public Level4s__c lev4 {get; set;}
        public Boolean selected {get; set;}
        public integer chkcountL4{get; set;}
        public Level4sClass(Level4s__c l4)
        {
            lev4 = l4;
           // lstLevel4 = [Select Id,name,Level3__c,(select id, account__r.name from Level4s__r where account__c =: + accid ) from Level4s__c where Level3__c =:lev4.id limit 1 ]; 
            chkcountL4 = l4.Level4s__r.size();
            if(chkcountL4  > 0 )
            {
                selected = true;
               
            }
            else
            {
                selected = false;
                  
            }      
        }
    }
     List<Level1sClass> Level1List{get; set;}
    public List<Level1sClass> getList1Details()
    {
       if(Level1List == null)
       {       
            Level1List = new List<Level1sClass>();
          
            for(level1s__c k: lstLevel1 )
            { 
                Level1List.add(new Level1sClass(k)); 
            } 
       }     
          
        return  Level1List ;
    }
   
    public static  List<Level2sClass> Level2List; 
    public static List<Level2sClass> getList2Details(Level1s__c lvl) 
    {
          Level2List= new List<Level2sClass>(); 
          if(ApexPages.currentPage().getParameters().get('S') == null)
          {
              lstLevel2 = [Select id,name,Level1_Name__c,Level1__c, (select  id,account__r.name from Level2s__r where account__c =:accid  ) from Level2s__c where Level1__c =:lvl.id order by id]; 
             
          }else
          {
              lstLevel2 = [Select id,name,Level1_Name__c,Level1__c, (select  id,account__r.name from Level2s__r where account__c =:accid  ),(select id from Level3s__r limit 1) from Level2s__c where Level1__c =:lvl.id and id in (Select cLevel2__c from Level2__c where Account__c=:accid) order by id]; 
               
          }
              for(level2s__c s: lstLevel2)
              {
                Level2List.add(new Level2sClass(s));
              }
          
             
         return Level2List;  
    } 
    
    public static  List<Level3sClass> Level3List; 
    public static List<Level3sClass> getList3Details(Level2s__c lvl) 
    {
        Level3List= new List<Level3sClass>();  
        if(ApexPages.currentPage().getParameters().get('S') == null)
          {
               lstLevel3 = [Select Id,name,Description__c,Level2__c,(select id,account__r.name  from Level3s__r where account__c =: accid ),(select id from cusLevel4s__r limit 1)   from Level3s__c where Level2__c =:lvl.id ]; 
          }else
          {
             lstLevel3 = [Select Id,name,Description__c,Level2__c,(select id,account__r.name  from Level3s__r where account__c =: accid ),(select id from cusLevel4s__r limit 1)   from Level3s__c where Level2__c =:lvl.id and id in (Select cLevel3__c from Level3__c where Account__c =: accid) ];  
          }     
                
                 for(level3s__c s: lstLevel3)
                 {
                     Level3List.add(new Level3sClass(s));
                 }  
         
        return Level3List;          
    }
    public static  List<Level4sClass> Level4List; 
    public static List<Level4sClass> getList4Details(Level3s__c lv4) 
    {
        
        Level4List= new List<Level4sClass>(); 
          
             
    
        return Level4List;          
    }
 
/*cuslevel end */

/* $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ Save $$$$$$$$$$$$$$$$$$$$$$$$$$$$$ */


public PageReference Save()
{
   List<level1s__c> selectLevel1 = new List<level1s__c>();
     
       
    //this.stdController.save();
    

    /////////// LEVEL1 ///////////////////
    List<level1s__c> selectedLevel1 = new List<level1s__c>(); 
    
    for(Level1sClass cCon: getList1Details() )
    {
         system.debug('cCon'+cCon.selected);
        if(cCon.selected == true)
        {
            system.debug('firstCCCCCCCCCC:'+cCon.lev1);
            selectedLevel1.add(cCon.lev1);
        }
    }           
     
    Level1__c[] levl1= [Select Id from Level1__c where Account__c=: ApexPages.currentPage().getParameters().get('id')]; 
    delete levl1; 
    if(selectedLevel1 != null)
    {     
        for(level1s__c con : selectedLevel1)
        {
            system.debug('CCCCCCCCCC:'+con+'\n');
            string acctid =ApexPages.currentPage().getParameters().get('id');
            List<Level1__c> lvl1obj= new  Level1__c[0];
            lvl1obj.add(new Level1__c(Name='Level1',Account__c=acctid,cLevel1__c=con.id));
            insert lvl1obj;
    
        }
    }    
    //////////// LEVEL2 ////////////////////
    List<level2s__c> selectedLevel2 = new List<level2s__c>(); 
    
 
    for(Level2sClass cCon:getList2Details())
    {
    
         system.debug('cCon'+cCon.selected);
        if(cCon.selected == true)
        {
            system.debug('firstCCCCCCCCCC:'+cCon.lev2);
            selectedLevel2.add(cCon.lev2);
        }
    }           
     
    Level2__c[] levl2= [Select Id from Level2__c where Account__c=: ApexPages.currentPage().getParameters().get('id')]; 
    delete levl2; 
    if(selectedLevel2 != null)
    {     
        for(level2s__c con : selectedLevel2)
        {
            system.debug('CCCCCCCCCC:'+con+'\n');
            string acctid =ApexPages.currentPage().getParameters().get('id');
            List<Level2__c> lvl2obj= new  Level2__c[0];
            lvl2obj.add(new Level2__c(Name='Level2',Account__c=acctid,cLevel2__c=con.id));
            insert lvl2obj;
           
         }
    }
  
    return null;
    
}