| Listing | Source File |
| 21.1 | GenericStack.java |
| 21.2 | GenericMethodDemo.java |
| 21.3 | BoundedTypeDemo.java |
| 21.4 | Max.java |
| 21.5 | Max1.java |
| 21.6 | WildCardDemo1.java |
| 21.7 | WildCardDemo2.java |
| 21.8 | WildCardDemo3.java |
| 21.9 | GenericMatrix.java |
| 21.10 | IntegerMatrix.java |
| 21.11 | RationalMatrix.java |
| 21.12 | TestIntegerMatrix.java |
| 21.13 | TestRationalMatrix.java |