I am not able to execute the program..please help

package Intermediate;

import java.util.*;

public class Arrayedit { public static void main(String[]args){ String[] things = {"hat ","pencil ","bottle ","laser"}; List<String> list1 = new ArrayList<String>();

  //add items to the list
  for(String x:things)
  list1.add(x);

  String[] morethings = {"pencil","bottle"};
  List<String> list2 = new ArrayList<String>();

  //add items to the list
  for(String y:morethings)
      list2.add(y);

  //print list 1
  for(int i=0;i<list1.size();i++){
  System.out.printf("%s",list1.get(i));
  }
  editlist(list1,list2);
  System.out.println();

  //print list 1
  for(int i=0;i<list1.size();i++){
      System.out.printf("%s",list1.get(i));

  }

}

public static void editlist(Collection<String> l1,Collection<String> l2){ Iterator<String>it=l1.iterator(); while(it.hasNext()){ if(l2.contains(it.next())) it.remove(); } } }