Comparator

package test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Collections;
public class Test {





static Comparator comp=new Comparator(){
public int compare(Object o1, Object o2) {
// TODO Auto-generated method stub
String s1=(String)o1;
String s2=(String)o2;
return s2.compareTo(s1);
}
};


/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
// Test t=new Test();

ArrayList list=new ArrayList();
list.add("d");
list.add("caaa");
// Collections.sort(list,comp);
int i=Collections.binarySearch(list,"caaa", comp);


// list.

// for(Object o:list){

System.out.println(i);
// }





}



}