Comparing strings with == which are declared final in Java

Question

I have a simple question about strings in Java. The following segment of simple code just concatenates two strings and then compares them with ==.

Answer 1

As per my research, all the final String are interned in Java. From one of the blog post:

So, if you really need to compare two String using == or != make sure you call String.intern() method before making comparison. Otherwise, always prefer String.equals(String) for String comparison.

So it means if you call String.intern() you can compare two strings using == operator. But here String.intern() is not necessary because in Java final String are internally interned.

You can find more information String comparision using == operator and Javadoc for String.intern() method.

Also refer this Stackoverflow post for more information.