1、Ctrl+O : Override method.
2、Ctrl+R : Replace.
3、Ctrl+I : Implement methods.
4、Alt+Insert : Generate code(Getters, Setters, Constructors, hashCode/equals, toString).
5、Ctrl+Alt+L : Reformat code.
6、Ctrl+H : Type hierarchy.
7、Ctrl+Shift+Backspace : Navigate to last edit location.
8、Ctrl+U : Go to super-method / super-class
9、Ctrl+Alt+H : Call hierarchy.
10、Ctrl+Shift+H : Method hierarchy.
原文：https://www.cnblogs.com/feiqiangsheng/p/12586430.html