effect of changing String using reflection

Question

As we all know, String is immutable in java. however, one can change it using reflection, by getting the Field and setting access level. (I know it is unadvised, I am not pl

Answer 1

After compilation some strings may refer to the one instance, so, you will edit more than you want and never know what else are you editing.

public static void main(String args[]) throws Exception {
    String s1 = "Hello"; // I want to edit it
    String s2 = "Hello"; // It may be anywhere and must not be edited
    Field f = String.class.getDeclaredField("value");
    f.setAccessible(true);
    f.set(s1, "Doesn't say hello".toCharArray());
    System.out.println(s2);
}

Output:

Doesn't say hello