search - Linked List, searching through -

my teacher gave practice assignment deals linked lists got code search , searchhelper, having trouble initializing search. how might go that? have tried prompting user variable , throwing through search method error "the method search(t) in type list_3 not applicable arguments (integer)"

the program has to: create linked list, prompt user value search for, use method search recursively searches linked-list object specified value. method should return reference value if it’s found; otherwise, should return null.

 import java.util.scanner;   class listnode< t >  {    t data;     listnode< t > nextnode;      listnode( t object )     {        this( object, null );     }      listnode( t object, listnode< t > node )    {       data = object;           nextnode = node;      }       t getdata()     {        return data;     }       listnode< t > getnext()     {        return nextnode;    }  }    public class list_3< t > {    private listnode< t > firstnode;    private listnode< t > lastnode;    private string name;      public static void main( string[] args )    {       scanner scan = new scanner(system.in);       int result;       list_3< character > list1 = new list_3< character >();       integer number;        list1.insertatfront( '3' );       list1.insertatfront( '4' );       list1.insertatback( '5' );       list1.insertatback( '6' );       list1.insertatfront( '2' );       list1.insertatfront( '1' );       list1.insertatback( '7' );       list1.insertatback( '8' );       list1.insertatfront( '0' );       list1.insertatback( '9' );        list1.print();       system.out.println("please enter value search for: ");       number = scan.nextint();       result = search(number);    }     public list_3()     {        this( "list" );     }       public list_3( string listname )    {       name = listname;       firstnode = lastnode = null;    }       public void insertatfront( t insertitem )    {       if ( isempty() )           firstnode = lastnode = new listnode< t >( insertitem );       else          firstnode = new listnode< t >( insertitem, firstnode );    }       public void insertatback( t insertitem )    {       if ( isempty() )          firstnode = lastnode = new listnode< t >( insertitem );       else          lastnode = lastnode.nextnode = new listnode< t >( insertitem );    }       public t removefromfront() throws emptylistexception    {       if ( isempty() )           throw new emptylistexception( name );        t removeditem = firstnode.data;          if ( firstnode == lastnode )          firstnode = lastnode = null;       else          firstnode = firstnode.nextnode;        return removeditem;     }      public t removefromback() throws emptylistexception    {       if ( isempty() )           throw new emptylistexception( name );        t removeditem = lastnode.data;          if ( firstnode == lastnode )          firstnode = lastnode = null;       else        {           listnode< t > current = firstnode;            while ( current.nextnode != lastnode )             current = current.nextnode;           lastnode = current;           current.nextnode = null;       }         return removeditem;     }      public boolean isempty()    {        return firstnode == null;    }     public void print()    {       if ( isempty() )        {          system.out.printf( "empty %s\n", name );          return;       }         system.out.printf( "the %s is: ", name );       listnode< t > current = firstnode;         while ( current != null )        {          system.out.printf( "%s ", current.data );          current = current.nextnode;       }         system.out.println();    }       public t search( t input )    {       return searchhelper( input, firstnode );    } // end method search      private t searchhelper( t input, listnode< t > node )    {       if ( node == null )          return null;       else if ( node.getdata().equals( input ) )          return node.getdata();       else          return searchhelper( input, node.getnext() );    }  }  

you messing integer character. decide list going be: list<integer> or list<character> (or list<object> or whatever want) not try search , integer in list filled characters ('1', '2', etc.).

'1'.equals(1) => false

good luck!