public class StringProcessingDemo
{
    public static void main(String[] args)
    {
        String sentence = "I hate text processing!";
        int position = sentence.indexOf("hate");
        String ending = 
                sentence.substring(position + "hate".length( ));

        System.out.println("01234567890123456789012"); 
        System.out.println(sentence);
        System.out.println("The word \"hate\" starts at index "
                                                      + position);
 
        sentence = sentence.substring(0, position) + "adore" 
                                                    + ending;
        System.out.println("The changed string is:");
        System.out.println(sentence);
    }
}