Technical Screening - Java Developers


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Interviewing at TEKsystems

An array is a container of a fixed number of objects of a similar type. It is a fundamental component of most programming languages. Public questions free account are common interview questions.

Review: “Technical Screening – Java Developers” by Obi Ogbanufe

They are great for practicing, or if you want to filter candidates using the classic problems. Solve Question. Example case: java. UnsupportedOperationException at MergeNames. Palindrome 10min. The string data structure is used to represent text. It is one of the most commonly used data structures. Therefore, every programmer should be skilled at string manipulation.

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A palindrome is a word that reads the same backward or forward. Write a function that checks if a given word is a palindrome. Character case should be ignored. UnsupportedOperationException at Palindrome. User Input 15min. Object-oriented programming is a paradigm based on encapsulating logic and data into objects, which may then contain fields and procedures.

How to assess a Java developer skills while hiring

Many of the most widely used programming languages are based on OOP, making it a very important concept in modern programming. Premium Questions The premium question library contains our unique, hand-crafted questions. Everyone makes mistakes. A good programmer should be able to find and fix a bug in their or someone else's code. Memory management allows programs to request memory dynamically from the operating system, and free it for reuse when no longer needed. Many modern programming languages automate this process; however, it should still be an important consideration when implementing an application.

A programmer should use a language as a tool, always taking advantage of language-specific data types and built-in functions. Arithmetic is a fundamental branch of mathematics. An understanding of arithmetic concepts, and their application, is important for every candidate. A stream is a sequence of data elements made available over time. Familiarity with data serialization to and from formats such as XML and JSON is important as it is commonly used for interprocess communication. Exceptions exist in most modern programming languages, making it important for a programmer to understand them and know how to handle them.

Choosing the right data structure to solve a problem can have huge implications on the performance of an application. Knowing when to use a specific data structure is one of the most important skills for a programmer.

TEKsystems Java Developer Interview Questions | Glassdoor

Iteration is the act of repeating a process, or cycling through a collection. Iteration is one of the fundamental flow control tools available to developers. Multi-threading allows a process to make more efficient use of modern hardware by allowing code to execute asynchronously. It can drastically improve the performance of any app; however, it can be tricky to get right, making this an important topic for any programmer.

Algorithmic thinking is one of the key traits of a good programmer, especially one working on complex or performance-critical code. Being able to create a set of test cases that ensure adequate test coverage is a key skill for creating a successful test. It is desirable for the test suite also to be optimal, i. Every programmer should be familiar with data-searching methods, as they are very common in data-analysis processes.

Many real-life situations are best modeled by graphs. Therefore, an in-depth knowledge of graph data structures is important for a good programmer. Dynamic programming methods for code optimization can be very useful to a programmer who understands them. The process of restructuring existing computer code without changing its external behavior.

It is essential for keeping code readable and maintainable.


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Test-driven development TDD is a software development process that relies on the repetition of a very short development cycle: requirements are turned into very specific test cases, based on which the software is improved only in order to pass the new tests. TDD is an essential skill for modern programmers. Every programmer should be familiar with data-sorting methods, as sorting is very common in data-analysis processes. Score Distribution Loading Fully Customizable Tests. Customize test duration, number of questions, passing score, web proctoring, and more.

Private Concierge Send us an email with an explanation of your testing needs and a list of candidates. This question tests the applicant's base-level Java knowledge. If they're more than passably familiar with Java, they should know the answer to this question. They may stick with a basic definition or go into an in-depth explanation of how it's used in Java coding. What to look for in an answer:.

What's your Java development process when you're coming into an existing project and working with other people's code? Many projects don't require coding from scratch. The applicant would work on already developed Java applications and need to adapt to another person's style.

TEKsystems Java Developer Interview Questions

This question determines whether the Java coder can come into existing projects without a problem. How do you adjust your Java coding process when a project starts to run behind schedule? Project overruns are common in software development, so your applicant should know how to minimize the damage to the schedule. This question gives you a look at their thought processes when it comes to prioritization and how they manage their time when they don't have enough of it. Can you explain the method you use to keep your code organized so it's easy to work with?


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You don't know how long the applicant is going to stay at your company. If they contribute a lot of Java code that's hard to understand or doesn't have clear comments throughout, then that makes it harder for other people to work with it.

Top 11 Tricky Java Coding Interview Questions - Java Programming - TalentSprint

Can you explain the concept of AJAX and when it's advantageous to use it in your code? This technical question dives deeper into their technical knowledge and the way they've used it in the past. You can learn how much they know about Java and whether they've worked with particular technologies with this question. Have you worked with Java frameworks before? If so, which have you selected and why? Java frameworks offer excellent time-saving tools for developers, and your organization may use several already. You can learn about the frameworks that the Java developer knows and which they prefer to work with.

What method do you prefer to use when you are declaring a class in your Java code?

Technical Screening - Java Developers Technical Screening - Java Developers
Technical Screening - Java Developers Technical Screening - Java Developers
Technical Screening - Java Developers Technical Screening - Java Developers
Technical Screening - Java Developers Technical Screening - Java Developers
Technical Screening - Java Developers Technical Screening - Java Developers
Technical Screening - Java Developers Technical Screening - Java Developers
Technical Screening - Java Developers Technical Screening - Java Developers
Technical Screening - Java Developers Technical Screening - Java Developers

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