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Java collection interview – Tell the difference questions. Set is unordered collection where List is ordered collection based on zero based index. List allow duplicate elements but Set does not allow duplicates. List does not prevent inserting null elements (as many you like), but Set will allow only one null element. Java Collections Interview Questions for beginners and professionals with a list of top 20 frequently asked java collection questions with answers with java, .net, Dec 3, 2019 - Collections in Java is a group of objects to store and manipulate them. Collection framework provides many interfaces like Set, List, Queue etc and classes like ArrayList, Vector, LinkedList, HashSet etc. Please have a look at our Java Collection job interview questions and answers page to win your job. Top 50 Core Java Interview Questions and Answers on Collections. In-depth Bonus : 20+ Videos & PDF interview guide. Atomic Access Java Tutorial states “In programming, an atomic action is one that effectively happens all at once. I also shared the tricky coding interview questions in our previous posts. Today, we will learn about the top 50 java collections interview questions and answers. Java Collections Interview Questions and Answers. Java Stream API for collection classes for supporting sequential as well as parallel processing. Iterable interface is extended with forEach() default method that we can use to iterate over a collection. Below is the diagram picturing the different collection classes and interfaces. Java Collection Interview Questions and Answers for Developers. Java Collection Nov 16, 2018 -Basic Core Java Interview Questions: Q1. Ans: In Java, package is a collection of classes and interfaces which are bundled together as they are related to