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About the test

The HTML/CSS, JavaScript, Java, and SQL online test assesses candidates' knowledge across the whole Web stack from HTML, CSS, and JavaScript on the Web front-end over Java on the back-end to SQL for data access.

It's an ideal test for pre-employment screening. A good full stack Java developer needs to be able to use a wide range of technologies.

This online test requires candidates to solve coding problems, find and fix bugs in multiple technologies using Java as the programming language.

Sample public questions

Easy
7 min
code
Public
HTML/CSS
Borders
Element Size
Styling

Every user on your website has an image avatar that is displayed when they post a comment. You want to style these images differently from other images on your site. Add a CSS class named avatar that fulfils the following requirements:

  1. The avatar's border is rounded, so that it appears as a circle.
  2. The avatar's width and height are both 150px.
  3. The avatar has a solid border, has a width of 2px, and be colored gray.

For example, the avatar in the template should look like:

Cat avatar

Easy
10 min
code
Public
Java
Interfaces
Inversion of Control
Refactoring

Refactor the AlertService and MapAlertDAO classes:

  • Create a new package-private interface, named AlertDAO, that contains the same methods as MapAlertDAO.
  • MapAlertDAO should implement the AlertDAO interface.
  • AlertService should have a public constructor that accepts AlertDAO.
  • The raiseAlert and getAlertTime methods should use the object passed through the constructor.
Easy
3 min
code
Public
JavaScript
Error Handling
Language

Implement the ensure function so that it throws an error if called without arguments or the argument is undefined. Otherwise it should return the given value.

Easy
7 min
code
Public
SQL
Aggregation
Group by
Select

App usage data are kept in the following table:

TABLE sessions
  id INTEGER PRIMARY KEY,
  userId INTEGER NOT NULL,
  duration DECIMAL NOT NULL

Write a query that selects userId and average session duration for each user who has more than one session.

See the example case for more details.

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182 more premium HTML/CSS, JavaScript, Java, and SQL questions

Document Store, Driver Exam, Positive Numbers, Links, Shipping, Truthy Expressions, Ad, Article Style, Baby Names, Chain Link, Cities, Document Counter, Editor, Format Table, Hobbies, Keywords, Label Color, Loading, Logo, Node, Paragraph, Product, Shirts, Snapshot, Snow Storm, Test Results, Upload, Username, Utilities, Warehouse, Weighted Average, Widgets, Language Teacher, iframe, Shining Star, Mock Library, Kilometer Converter, Max Sum, Crop Ratio, Launch Time, Function Wrapper, Link, Integer Utilities, Procedural Generator, Config Element, Stack to List, Fire Dragon, Log Parser, Log Parser, Unique Numbers, Load URL, Photon Frequency, String Occurrence, Addition, Worker, Racer, Color Codes, Tax Calculator, Bookmark, Screen Reader, Game Offer, Bicycle Report, Curious Leaf, Gaming Console, Travel Blog, Confirm, Blog, Friend, Roads, Authors, Autocomplete, Bank Branches, Cheapest Product, Countries, Developers, Hospital Patients, Index Performance, Menu Items, Movies, Projects, Rectangles, Restaurant Menu, Retirees, SMS Messages, Poll, Users and Accounts, Matching Clothes, Agents, Sales, Employee Manager, Auto Show, Delete Orders, Welfare Organization, Tasks, Manager Sales, Student Rankings, Student Activities, Youngest Child, Movies Live, Department Report, Ingredients, Average Salary, Movie Genres, Segment, Christmas Tree, Timesheet, Email Tables, Data Entry, Price List, Ice Cream Flavors, Memory Game, TestDome Logo, River Discharge, ATM Locations, Ceramic Store, Patient Class, Shelf Test, Read Write Execute, Read First Line, Post Comment, Row Appender, Segment, Height, Product Rating, Validation, Cards, Array Search, Screen, Timer, Username, Snapshot, Scale Font Size, Products, Paragraph, Hide Button, A Tag, Hobbies, Loading Bar, Log Patch, Double, Table of Names, Filter, Transactions, Reorder, Share Button, Max Sum, Platformer, Unique Numbers, Book Sale, Friend, Stories, Moving Total, Internal Nodes, Unique Product, Merge Stock Index, Date Transform, Date Transform, Ban Users, Trading Data Paging, New Folder, Action Stack, Reward Points, Tiles, New Folder, Animal Hierarchy, Tax Calculator, Shipping, Chain Link, Node, Read Write Execute, Car Rental, Veterinarian, Numbers To Text, Numbers to Text, Wheel Defects, Paper Strip, Paper Strip, Flight Connections, Vectors, Vectors, Special Actions, Special Actions.

Skills and topics tested

  • Java
  • Bug Fixing
  • Language
  • Exceptions
  • JavaScript
  • Closures
  • HTML/CSS
  • CSS Selectors
  • Styling
  • Arithmetic
  • Element Spacing
  • Flexbox
  • Positioning
  • Linked List
  • Fonts
  • OOP
  • Refactoring
  • Elements and Attributes
  • HTML5
  • HashMap
  • Iteration
  • Lists
  • Animation
  • Recursion
  • Tree
  • Regex
  • Strings
  • Accessibility Levels
  • Forms
  • ArrayList
  • Stream API
  • Class Modifiers
  • Inheritance
  • Hyperlink
  • IFrame
  • TDD
  • Dynamic Proxy Classes
  • Method Overriding
  • Algorithmic Thinking
  • Integer Division
  • Timing Events
  • Performance Tuning
  • Random
  • Generics
  • Complexity
  • Stack
  • Higher Order Function
  • Interfaces
  • Serialization
  • XML
  • Dictionary
  • Ajax
  • HTTP
  • Promise
  • Arrays
  • Stream
  • CSS Advanced
  • Element Size
  • Memory Management
  • Multithreading
  • Synchronization
  • Associative Arrays
  • Classes
  • Objects
  • Bookmarks
  • Accessibility
  • CSS Basics
  • Tables
  • Responsive Design
  • UI
  • Dialog Box
  • Event Handling
  • Semantic Tags
  • Graphs
  • SQL
  • Conditions
  • Views
  • Select
  • Create Index
  • Database Schema
  • Constraints
  • Create Table
  • Aggregation
  • Subqueries
  • Ordering
  • Indexes
  • Alter Table
  • Group by
  • Update
  • Insert
  • Joins
  • Left Join
  • Right Join
  • Delete
  • SQL CASE
  • Union
  • CTE
  • Borders
  • Inline Styles
  • Selectors
  • CSS Layout
  • Database Normalization
  • Abstract Class
  • Test Case Design
  • Unit Testing
  • Content Manipulation
  • DOM Manipulation
  • Attribute Manipulation
  • ECMAScript 2015
  • Asynchronous Calls
  • Callback
  • JSON
  • Sorting
  • Monkey Patching
  • Data Structures
  • Dynamic Programming
  • HashSet
  • Pagination
  • Queue
  • StringBuilder

For job roles

  • Full-Stack Developer
  • Java Developer
  • JavaScript Developer
  • SQL Developer
  • Web Developer

Sample candidate report

What others say

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Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

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Product reviews

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