Free Java Quiz Questions With Answers – Prepare Yourself For Interviews
1. Online Java Quiz Questions
Today, we will move towards Java quiz questions. These Java quiz questions will brush up your concepts of java and prepare you to face Java interview. This Java quiz contains multiple choice questions for java. Answers to all these Java quiz questions and follow the relevant link to get the deeper knowledge of Java.
So, let’s start exploring Java Quiz Questions.
Q.1 Which Set class should be most popular in a multi-threading environment, considering performance constraint?
Q.2 Which Map class should be most popular in a multi-threading environment, considering performance constraint?
Q.3 Which allows the removal of elements from a collection?
Q.4 What will be the output of given code
Q.5 What will be the output of the following code
Q.6 What will be the output of given code
Q.7 What will be the output of the following code
Q.8 What will be the output of the following code
Q.9 What will be the output of the following code
Q.11 The Comparator interface contains the method?
Q.12 Which of those is synchronized?
Q.13 Which offers the best performance?
Q.14 Which of these is the most popularly used class as a key in a HashMap?
Q.15 What should we use when add and remove operations are more frequent than get operations
Q.16 Iterator returned by ArrayList is?
Q.17 Iterator returned by LinkedList is?
Q.18 Iterator returned by CopyOnWriteArrayList is?
Q.19 Iterator returned by HashMap on key, value and entry are?
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