How can i delete an unmodify class(java.nio.ByteOrder) from class diagram

I drag the java.nio.ByteOrder form JDK to my class diagram, then i can't delete this item from there.

the version info:
Version 3.7.00
Build: 201711211349
System: linux (3.10.0-693.21.1.el7.x86_64)
Architecture: x86_64

Hi,

You can use the Class context menu:



Or use the 'Ctrl+M' shortcut (select the Class first)

br

thank you for response. in my opinion, it can be treated as a bug if this item can only hidden but not delete. what do you think

It's not a bug. It is a readonly element so it cannot be deleted.

thanks for response.
in my scenario, i drag this item from jdk package to the diagram;
i think the diagram is writable, so maybe it should alow user to add or delete items;
the ByteOrder item is readonly, so maybe the "edit element..." option should be gray, but "delete" option should be avaliable, because the diagram is writeable.