What does the @ next to a Class instance mean? I have a question while using IntelliJ IDEA, Android Studio Debug. What does the number next to @(at) mean? No matter how hard I look for development references, I can't find them. There are a number in brackets and a number without brackets. They have different numbers. I am curious about the difference I guess it is the unique hash value of the class instance, but I wonder what it means more accurately. <a href="https://i.stack.imgur.com/aoCKh.png" rel="nofollow noreferrer">enter image...