We've updated the link from https://stackoverflow.com/q/50683786 https://stackoverflow.com/q/50683786 and the title from “Operator += is broken for Strings in J

We've updated the link from https://stackoverflow.com/q/50683786 https://stackoverflow.com/q/50683786 and the title from “Operator += is broken for Strings in Java 9 and 10” to the official issue page.