// File: ArrayAsList.java

// Uses Arrays method asList() to create a "list view" of an array,
// Then uses List methods get() to return a value stored in a list
// and set() to store a new value in a specified position in a list.

// Shows that any changes made to the list view affect the original array
// and vice-versa.

import java.util.* ;	// for List interface

class ArrayAsList 
{
   static void printBoth(String [] music, List theList)
   {
      System.out.println( "printing the array..." ) ;
      for ( int i = 0; i < music.length; i++ )
         System.out.print( music[i] + "   " ) ;
	  
	  System.out.println( "\n\nprinting the List..." ) ;
      for ( int i = 0; i < theList.size(); i++ )
         System.out.print( theList.get(i) + "   " ) ;

      System.out.println();
   }

   public static void main( String args[] ) 
   {
      String [] music = { "jazz", "blues", "rock", "reggae" } ;
   	  List theList ;
   	  
   	  // create "list view" of the array
   	  theList = Arrays.asList( music ) ;   	
      	
      // change a list item
      theList.set( 3, "rap" ) ;
      
      // The following would throw an UnsupportedOperationException!  Although
      // we have a "list view" of an array, it's still a fixed-size array!
       
      // theList.add("folk") ;
      
      // change an array element
      music[0] = "classical" ;
        
      printBoth(music, theList) ;
   }                                           
}

/*  program output:

printing the array...
classical   blues   rock   rap

printing the List...
classical   blues   rock   rap

*/