whats wrong?

Question

import java.util.Scanner;
public class Program
{
public static void main(String[] args) {

Scanner scan = new Scanner (System.in);

String x = scan.nextLine();

x.replace ("o" , "p");

System.out.println (x);
}
}

Answer 1

replace doesn't change the original string, it returns a modified version of that string.

x = x.replace("o","p"); should work.

Answer 2

String are immutable.. Read about that topic..
And if you need replaced result.. You need to save result by replace like
x=x.replace("o","p");
This only replace first occurrence of "o",

For all, use
x=x. replaceAll("o", "p") ;

Answer 3

Kevin Star thanks!