Java replace last char in string

/**
 * @author lautturi.com 
 * Java example: replacing last character in a string using java
 */


import java.util.*;

public class Lautturi {
	public static void main(String[] args) {
		String string = "welcome to lauttur!";
		String replace ="i";
		String newString = string.substring(0,string.length() - 1)+replace;
		System.out.println(newString);
	}
}

output:

welcome to lautturi