public class StringDemo
{
    public static void main(String[] args)
    {
        String sentence = "Text processing is hard!";
        int position = sentence.indexOf("hard");
        System.out.println(sentence);
        System.out.println("012345678901234567890123"); 
        System.out.println("The word \"hard\" starts at index "
                           + position);
        sentence = sentence.substring(0, position) + "easy!";
		sentence = sentence.toUpperCase();
        System.out.println("The changed string is:");
        System.out.println(sentence);
    }
}