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
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Sample Free Questions



JavaScript 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 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 CSS selectors 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 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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Link, Editor, Utilities, Filter, Stopwatch, Movies, Index Performance, Poll, Rectangles, Blog, Document Store, Needle, Log Parser, Label Color, Driver Exam, Positive Numbers, Logo, Crop Ratio, Article Style, Programmer Teacher, Retirees, Chicken, Share Button, Ad, Authors, Countries, Employee Manager, Paragraph, Paragraph, Row Appender, Username, Keywords, Chain Link, Hobbies, Hobbies, Read First Line, Node, Cheapest Product, Links, Vectors, Username, Function Wrapper, Shipping, Confirm, Movies Live, Double, Hide Button, Racer, Truthy Expressions, Addition, ATM Locations, Bookmark, Christmas Tree, Developers, iframe, Delete Orders, Product Rating, Products, Restaurant Menu, Roads, Sales, Shirts, Snapshot, Snapshot, Student Activities, Table of Names, Transactions, Warehouse, Word Count, Projects, Baby Names, Loading, Log Parser, Cards, Youngest Child, Format Table, Breakfast Menu, Cities, Screen Reader, Scale Font Size, New Folder, Internal Nodes, Moving Total, Entry, Unique Numbers, Remove Repetitions, Max Sum, Unique Name, Friend, Paper Strip, Log Patch, Train, Platformer, Timesheet, Tasks, Loading Bar, Weighted Average, Ingredients, Autocomplete, Test Results, Bank Branches, Hospital Patients, Menu Items, Ban Users, Product, Unloading Trucks, Array Search, Validation, Stack to List, Height, Read Write Execute, Shining Star, SMS Messages, Document Counter, Snow Storm, Data Entry, Email Tables, Student Max Score, TestDome Logo, Ice Cream Flavors, A Tag, Widgets, Upload, Reorder, Shelf Test, Stories, Rare, Screen, Department Report, Runner, Post Comment, Merge Stock Index, Date Transform, Date Transform, Segment, Segment
HTML/CSS HTML attributes Java OOP JavaScript Arrays Closures SQL Aggregation Subqueries Indexes Conditions HTML5 Semantic tags Bug fixing Language Stream Strings Serialization CSS selectors Exceptions Insertion Positioning Styling Joins DOM manipulation Data structures Iteration Arithmetic Searching Event handling Multithreading CSS advanced Constraints Database schema Delete Sorting Update Views Animation Selectors Accessibility Algorithmic thinking Graphs Monkey patching Memory management Tables Performance tuning Refactoring Recursion TDD CSS layout Forms CSS basics HTML Test case design Dynamic programming Classes ECMAScript 2015 Union
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