Two String Should Be Same But Execution Says Its Not

public class StringTest
{
public static void main(String args[])
{
String s1="hello";
s1=s1.concat("me");
String s2="hellome";
if(s1==s2) System.out.println("s1 and s2 has same referance");
if(s1.equals(s2)) System.out.println("s1 and s2 has same content");
}
}

Output is : s1 and s2 has same content

if after concatenation both string is stored in string pool it will refer to same memory location and other confusion is after any string operation like (concatenation , replace , substring) jvm creates a new string in which memory area..?? Heap or String pool.