Why the final keyword can make strings equal in java

public class Test
            {

public static void main(String[] args) {
 String a =
            "hello2"; 
 final String b = "hello";
 String d =
            "hello";
 String c = b + 2; 
 String e = d + 2;

            System.out.println((a == c));
 System.out.println((a ==
            e));
}

The
result is True and False.
Does "==" not mean that the string address is
equal?
I think the result is False Fasle