package examples;

import java.util.Collections;
import java.util.Comparator;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ComparatorSorter
{
  public static void main(String[] args)
  {
    List<String> list = new ArrayList<String>();
    list.add("abc");
    list.add("DEF");
    list.add("ghi");

    // Do the sort
    Collections.sort(list, new CaseInsensitiveComparator() );

    // See results
    Iterator<String> iter = list.iterator();
    while (iter.hasNext())
    {
      String item = iter.next();
      System.out.println(item);
    }
  }
}

class CaseInsensitiveComparator implements Comparator<String>
{
  public int compare(String s1, String s2)
  {
    return s1.toLowerCase().compareTo( s2.toLowerCase() );
  }
}