Reverse a string java

/**
 * @author lautturi.com
 * Java example: Reverse a string using charAt method
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		String str = "Lautturi Java";
		String newStr = "";
		for (int i = str.length() - 1; i >= 0; i--) {
			newStr = newStr + str.charAt(i);
	    }
	    System.out.print(newStr);

	}
}

output:

avaJ iruttuaL