Core Java · interview question
What does this LinkedHashSet print after inserting a duplicate fruit?
Multiple choiceMediumchapter-4-curatedpremiumcore-javacode-reading-with-collections
Set<String> fruits = new LinkedHashSet<>();
fruits.add("Apple");
fruits.add("Banana");
fruits.add("Cherry");
fruits.add("Apple");
System.out.println(fruits);Answer and explanation
Correct answer
B. [Apple, Banana, Cherry]
Why
HashSet does not allow duplicates and does not maintain any order, but LinkedHashSet does maintain insertion order. The list retains order without duplicates.
Test yourself on Core Java
A free test with instant, explained results. No account needed.
More Core Java questions
- What does executing a throw statement inside a catch block evaluate to?
- In Java, what happens if an exception is thrown in a method and not caught within that method?
- Which method would you use to add an element to a List at a specific position?
- Consider the following code snippet. What is the issue with the 'applyDiscount' method?
- How do you correctly initialize a BigDecimal to represent the monetary value 50.75?
- Why might using == with Integer objects sometimes return false even if they have the same value?