Testdome Java Questions And Answers [ EXTENDED — 2025 ]

Sample public questions * Create a new package-private interface, named AlertDAO, that contains the same methods as MapAlertDAO. * Java Spring Boot Online Test - TestDome

Be highly proficient with List , Set , and Map interfaces. Understand when to leverage a HashSet (for uniqueness checks) versus an ArrayList or LinkedList .

TestDome evaluations differ significantly from platforms like LeetCode or HackerRank. Instead of optimizing complex mathematical algorithms, TestDome tests your ability to write clean, bug-free, and idiomatic Java code that mimics real-world development tasks. Core Blueprint of the Exam testdome java questions and answers

Write a method that finds two indices in an array whose elements sum up to a target value. The method should return the indices as an array, or null if no such pair exists.

The fluorescent lights of the conference room hummed with a low, irritating buzz. Elena sat across from three developers, all staring at a printout of her code. She had applied for the Senior Java Developer position at "LogiCore," a company known for its rigorous hiring standards. Sample public questions * Create a new package-private

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import java.util.HashSet; public class SumCheck public static boolean hasPairWithSum(int[] numbers, int targetSum) numbers.length < 2) return false; HashSet seenNumbers = new HashSet<>(); for (int num : numbers) int complement = targetSum - num; if (seenNumbers.contains(complement)) return true; seenNumbers.add(num); return false; public static void main(String[] args) int[] indices = new int[] 3, 1, 5, 7, 5, 9 ; System.out.println(hasPairWithSum(indices, 10)); // Expected output: true Use code with caution. The method should return the indices as an

Implement the uniqueNames method. When passed two arrays of names, it must return an array containing the names that appear in either or both arrays. The returned array should have no duplicates.

public class TV implements Remote public void turnOn() System.out.println("TV ON"); public void turnOff() System.out.println("TV OFF");

// Implement an LRU cache with get(key) and put(key, value) methods // Use LinkedHashMap with accessOrder=true

While traditional loops work, utilizing Streams can significantly speed up your writing time and keep your code clean. Master operations like .filter() , .map() , .collect() , and .reduce() . TestDome Java Questions and Answers (Code Implementations)