问题
According to this page I can get UML model using "CTRL+ALT+U" shortcut. But I cannot make it work in my instance of IDEA, Community Edition version 13.1.3
回答1:
Possible steps:
1) Right click on a package from the project panel
2) Near the bottom of the popup, select "Diagrams" then "Show Diagram"
3) Hopefully you will see a class model of the package.
回答2:
Diagrams are not available in the Community Edition. Community vs Ultimate editions comparison.
来源：https://stackoverflow.com/questions/24001429/intellij-idea-uml-shortcut