 
                            ...
| Puzzle 67, "All Strung Out" | |
| Item 16, "Prefer Interfaces to Abstract Classes" | |
| Section 6.3, "Placement" | |
| 
 | |
| [JLS 2011] | §6.4.1, "Shadowing" | 
...
 
                            ...
| Puzzle 67, "All Strung Out" | |
| Item 16, "Prefer Interfaces to Abstract Classes" | |
| Section 6.3, "Placement" | |
| 
 | |
| [JLS 2011] | §6.4.1, "Shadowing" | 
...