From the main menu, choose Window → Preferences .
In the properties tree, select General → Editors → JPA Diagram Editor .
Specify the JPA diagram editor settings. To restore the global predefined values, choose Restore Defaults.
Choose Apply and then OK.
From the project context menu in the Project Explorer, choose Properties.
Select JPA → JPA Diagram Editor .
Specify the JPA diagram editor settings. To restore the global default settings, choose Restore Defaults.
Choose Apply and then OK.