this is my code and the str thingy cannot find could anyone help me thank you! and this the error
Capture.JPGimport java.util.Scanner; public class Upper { public static void main(String[] args) { java.util.Scanner scn= new java.util.Scanner(System.in); System.out.print("Enter Words: "); String s1=scn.next(); System.out.println("original string = " + str); System.out.println("After replacing all vowels into capital case = " + str.replaceAll("a", "A").replaceAll("e", "E") .replaceAll("i", "I").replaceAll("o", "O") .replaceAll("u", "U")); }