Comparator Example

import java.util.*;

class comparator
{
public static void main(String args[])
{
TreeSet treeset = new TreeSet(new NewComparator());

treeset.add("Item 0");
treeset.add("Item 1");
treeset.add("Item 2");
treeset.add("Item 3");
treeset.add("Item 4");
treeset.add("Item 5");
treeset.add("Item 6");

Iterator iterator = treeset.iterator();

while(iterator.hasNext()) {
System.out.println(iterator.next());
}
}
}

class NewComparator implements Comparator
{
public int compare(Object obj1, Object obj2)
{
if (((String) obj1).equals("Item 3")) return -1;
return ((String) obj1).compareTo((String) obj2);
}
}