Summary

Alright, you’ve made your way through another tough chapter. In this chapter, we explored the fundamentals of collections and generics in Java. We began by discussing the need for collections in programming and provided an overview of the different collection types available in Java, including List, Set, Map, Queue, and Deque. We examined the specific implementations of each collection type, such as ArrayList, LinkedList, HashSet, TreeSet, HashMap, TreeMap, and more, along with their differences and appropriate use cases. We also covered basic operations, such as adding, removing, and iterating through elements in each collection.

Then, we moved on to sorting collections. We made the distinction between natural ordering and custom ordering with the use of the Comparable and Comparator interfaces. We learned how to implement the compareTo() and compare() methods, as well as how to sort lists, sets, and maps using Collections.sort() and the TreeSet and TreeMap classes...