HTML/CSS, JavaScript, Java, and SQL Online Test

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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.

Recommended Job Roles
Full-Stack Developer
Java Developer
JavaScript Developer
SQL Developer
Web Developer
Sample Candidate Report

Sample Free Questions



JavaScript Error handling Language Public

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.



SQL Aggregation Select Public

Given the following data definition, write a query that returns the number of students whose first name is John. String comparisons should be case sensitive.

TABLE students
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL



HTML/CSS Borders Element size Styling Public

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

Alert Service


Java Interfaces Inversion of control Refactoring Public

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 constructor that accepts AlertDAO.
  • The raiseAlert and getAlertTime methods should use the object passed through the constructor.
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Premium Questions

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Filter, Document Store, Needle, Driver Exam, Positive Numbers, Read First Line, Links, Function Wrapper, Shipping, Double, Truthy Expressions, Roads, Table of Names, Word Count, Cards, New Folder, Max Sum, Paper Strip, Log Patch, Loading Bar, Ingredients, Unloading Trucks, Array Search, Read Write Execute, Shining Star, Reorder, Stories, Runner, Segment, Segment, Hobbies, A Tag, Ad, Addition, Article Style, ATM Locations, Authors, Autocomplete, Baby Names, Ban Users, Bank Branches, Blog, Bookmark, Chain Link, Cheapest Product, Chicken, Christmas Tree, Cities, Confirm, Countries, Crop Ratio, Date Transform, Date Transform, Department Report, Developers, Document Counter, Editor, Employee Manager, Veterinarian, Format Table, Height, Hide Button, Hobbies, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Movies Live, Projects, Rectangles, Restaurant Menu, Retirees, Sales, SMS Messages, Student Activities, Tasks, Transactions, Youngest Child, iframe, Internal Nodes, Keywords, Label Color, Link, Loading, Log Parser, Log Parser, Logo, Node, Paragraph, Paragraph, Platformer, Post Comment, Product, Product Rating, Products, Racer, Remove Repetitions, Row Appender, Scale Font Size, Screen Reader, Share Button, Shirts, Snapshot, Snapshot, Snow Storm, Stack to List, Test Results, TestDome Logo, Timesheet, Ship, Unique Product, Unique Numbers, Upload, Username, Username, Utilities, Vectors, Warehouse, Weighted Average, Widgets, Language Teacher, Welfare Organization, Manager Sales, Delete Orders, Validation, Timer, Book Sale, Friend, Screen, Data Entry, Email Tables, Student Max Score, Average Salary, Movie Genres, Student Rankings, Auto Show, Ice Cream Flavors, Poll, Shelf Test, Moving Total, Breakfast Menu
JavaScript Arrays Java Bug fixing Language Stream Strings Exceptions Closures HTML/CSS CSS selectors Styling Arithmetic DOM manipulation Event handling SQL Conditions Views Algorithmic thinking Monkey patching HTML5 Subqueries Update Sorting Recursion TDD Dynamic programming Memory management Iteration Attribute manipulation Element spacing CSS advanced Element size Constraints Create table Database schema Select Create index Performance tuning Flexbox Positioning Alter table Elements and attributes Semantic tags Bookmarks Linked list Aggregation Higher order function Interfaces OOP Fonts Dialog box Ordering Integer division Regex Insert Left join Refactoring Queue Objects Asynchronous calls HashMap Lists Indexes Union Group by Joins Hyperlink IFrame Tree Animation Serialization XML Data structures Content manipulation Accessibility levels JSON Multithreading Synchronization StringBuilder Accessibility Forms ArrayList Complexity Stack Stream API CSS layout Tables Class modifiers Inheritance SQL CASE CTE Delete Callback Graphs Classes ECMAScript 2015 Borders Inline styles Responsive design Test case design Unit testing HashSet Selectors
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