/*	Punters Lounge JAVA programming course
 *	
 *	Lesson6.java
 *
 *	Author	:	Erik Datapunter
 *	Date	:	28/apr/2004
 *
 *	Text manipulation example program
 *
 */

public class Lesson6 {
public static void main(String[ ] args) {

	// 2 string buffers, one to hold the existing text, one for the new text
	StringBuffer mytext = new StringBuffer(100);
	StringBuffer newtext = new StringBuffer(100);
	String badword = "bookmaker";
	String goodword = "bookie";
	int position = 0;

	// use the append method to put the text into the buffer
	mytext = mytext.append("My bookmaker is my best friend.");

	// use the indexOf method to find out if the search word is in the text
	position = mytext.indexOf(badword);

	// if position is -1 then the word is not in the text,..
	if (position == -1)
	{
		System.out.println("The word to replace was not found.");
	}
	//  ...else its in the text starting at that position
	else
	{
		// start the new text with the beginning of the existing text up to the found word
		newtext = newtext.append(mytext.substring(0,position));
		
		// append the good word to the beginning of the new text
		newtext = newtext.append(goodword);
		
		// append the rest of the existing text, without the bad word, to the new text
		newtext = newtext.append(mytext.substring(position+badword.length()));
		
		// display the old and new text
		System.out.println("Old text : " + mytext.toString());
		System.out.println("New text : " + newtext.toString());
	}

}
}