6 min read
This study guide covers the Java Collections Framework, focusing on ArrayLists. It explains the different types of collections (sets, lists, deques, maps) and details the advantages of using ArrayLists over arrays, emphasizing dynamic sizing and flexibility. The guide also introduces generics for type safety and explains the use of wrapper classes (like Integer, Double) with ArrayLists.
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Question 1 of 12
Which of the following data structures in the Java Collections Framework allows duplicate elements and maintains the order of insertion? 🤔
Sets
Lists
Deques
Maps