For creating relationship links between node elements, IntelliJ IDEA provides a special mode, in which drag-and-drop technique can be used for drawing links. As a link is created, the corresponding extends / implements clause is generated in the underlying source code. So doing, the extends link is represented with a solid line, and the implements link is represented with a dotted line.
- Make sure that is pressed on the diagram toolbar.
- Draw a link from the source to a target node.
- Specify whether the target class should be declared abstract, or implement required abstract methods:
- Select a link between two node.
- Press DeleteDeleteDeleteDeleteDelete or Ctrl+DDeleteDeleteDeleteDeleteDelete or BackspaceDeleteDelete or Backspace.
- In the dialog box that opens, confirm deletion: