Why I am getting false

Question

check out this code
https://code.sololearn.com/cdV7DBtUZyqq/?ref=app
public class Program
{
public static void main(String[] args) {

String s1 = "Mississippis";
s1=s1+'s';
String s3="Mississippis"+'s';
String s2 ="Mississippiss";
System.out.println(s1); // Print Mississippiss
System.out.println(s2); // Prints Mississippiss
System.out.println(s3 == s2);// prints true
System.out.println(s1 == s2); // Prints "false", why s1 and s2 should point at same object as s1 is present in string pool

Answer 1

that's because they are references of different objects.
variables in java are always objects(except primitives), the name you give is a reference.
So using == you are testing if they are the same obj but they aren't!
use equals() instead, like @Cool Codin said.

Answer 2

That is why you don't use == for comparing two strings!
Java has a built-in method for this: equals()
so..
s1.equals(s2); // it prints true

Answer 3

@ Jamie Thanks I got little bit but still as s1 is changed it points to a different object , so during instantiation of s2 , it search for that string in the string pool and it is already present so it doesn't need to create a new string object.