java first letter to upper case in String

/**
 * @author lautturi.com 
 * Java example: java capitalize the first letter of a string
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		String str = "hello lautturi java world";
		String capStr = str.substring(0, 1).toUpperCase() + str.substring(1);
		
		System.out.println(capStr);
	}

}

output:

Hello lautturi java world