You're not supposed to, but I've certainly found code out there that does use == to compare boxed integers because the test cases they used happen to work. And

You're not supposed to, but I've certainly found code out there that does use == to compare boxed integers because the test cases they used happen to work. And in fact when I googled to find the exact range where it switches from cached integers to truly creating new objects, the top link was at best highly misleading. https://www.tutorialspoint.com/check-two-numbers-for-equality-in-java https://www.tutorialspoint.com/check-two-numbers-for-equalit...