IntelliJ IDEA jump from interface to implementing class in Java
Yes, On mac, it is Command + Option + B. You will need to move your cursor to the interface name before invoking the shortcut. I'm not sure what's the shortcut in PC, for if you right click the interface name -> "Go To" -> "Implementations"... the shortcut is listed there.
In Windows, it is CTRL + ALT + B: JetBrains navigation documentation.
In addition to Ctrl + Alt + B mentioned above, you can also use the mouse: Ctrl + Alt + LeftMouseButton to jump directly to implementations.
If you did Command (Mac) / Ctrl (Windows) + Mouse click on method you want to navigate to You will be navigated to interface (Declaration)
but If you did Alt + Ctrl + Mouse click on method you want to navigate to You will be navigated to class (Implementation) you can use also Alt + Ctrl + b if you dont want leave keybourd