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Section 6: Collections / Generics
Section 6: Collections / Generics
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| 6.1 | Given a design scenario, determine which collection classes and/or interfaces should be used to properly implement that design, including the use of the Comparable interface. |
| 6.2 | Distinguish between correct and incorrect overrides of corresponding hashCode and equals methods, and explain the difference between == and the equals method. |
| 6.3 | Write code that uses the generic versions of the Collections API, in particular, the Set, List, and Map interfaces and implementation classes. Recognize the limitations of the non-generic Collections API and how to refactor code to use the generic versions. Write code that uses the NavigableSet and NavigableMap interfaces. |
| 6.4 | Develop code that makes proper use of type parameters in class/interface declarations, instance variables, method arguments, and return types; and write generic methods or methods that make use of wildcard types and understand the similarities and differences between these two approaches.
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| 6.5 | Use capabilities in the java.util package to write code to manipulate a list by sorting, performing a binary search, or converting the list to an array. Use capabilities in the java.util package to write code to manipulate an array by sorting, performing a binary search, or converting the array to a list. Use the java.util.Comparator and java.lang.Comparable interfaces to affect the sorting of lists and arrays. Furthermore, recognize the effect of the “natural ordering” of primitive wrapper classes and java.lang.String on sorting. |
