Looks like the Java types does not implement IComparable. Please use .net
types or a Java list collection. It works with the .net System.String().

import System .* ;
import System.Collections .* ;
public class SamplesArrayList
{
   public void FindMyObject(ArrayList myList, Object myObject)
   {
       int myIndex = myList.BinarySearch(new System.String(""+myObject));
       if (myIndex < 0)
       {
           Console.WriteLine("The object to search for ({0}) is not found.
The next larger object is at index {1}.", myObject,
System.Convert.ToString(~myIndex));
       }
       else
       {
           Console.WriteLine("The object to search for ({0}) is at index
{1}.", myObject,                     System.Convert.ToString(myIndex));
       }
   } //FindMyObject

   public SamplesArrayList()
   {
       // Creates and initializes a new ArrayList.
       ArrayList myAL = new ArrayList();
       for (int i = 0; i <= 4; i++)
       {
           myAL.Add(new System.String(""+(i * 2)));
       }

       // Locates a specific object that does not exist in the ArrayList.
       Object myObjectOdd = new System.String(""+3);
       FindMyObject(myAL, myObjectOdd);
   }

   public static void main(String[] args)
   {
       new SamplesArrayList();
   } //Main
} //SamplesArrayList

Lars-Inge T?nnessen
www.larsinge.com