// Fig. 21.10: BinarySearchTest.java
// Using algorithm binarySearch

// Java core packages
import java.util.*;

public class BinarySearchTest {
   private String colors[] = { "red", "white", "blue", "black",
      "yellow", "purple", "tan", "pink" };
   private ArrayList list;        // ArrayList reference

   // create, sort and output list 
   public BinarySearchTest()
   {
      list = new ArrayList( Arrays.asList( colors ) );  
      Collections.sort( list );   // sort the ArrayList
      System.out.println( "Sorted ArrayList: " + list );
   }

   // search list for various values
   public void printSearchResults()
   {
      printSearchResultsHelper( colors[ 3 ] ); // first item
      printSearchResultsHelper( colors[ 0 ] ); // middle item
      printSearchResultsHelper( colors[ 7 ] ); // last item
      printSearchResultsHelper( "aardvark" );  // below lowest
      printSearchResultsHelper( "goat" );      // does not exist
      printSearchResultsHelper( "zebra" );     // does not exist
   }

   // helper method to perform searches
   private void printSearchResultsHelper( String key )
   {
      int result = 0;

      System.out.println( "\nSearching for: " + key );
      result = Collections.binarySearch( list, key );
      System.out.println( 
         ( result >= 0 ? "Found at index " + result :
         "Not Found (" + result + ")" ) );
   }

   // execute application
   public static void main( String args[] )
   {
      new BinarySearchTest().printSearchResults();
   }       

}  // end class BinarySearchTest

/**************************************************************************
 * (C) Copyright 2002 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
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 * development, research, and testing of the theories and programs        *
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