You've taken an Intro to Programming course, you've enhanced your skills with self-learning, and you've showcased your work online. The hard work has paid off, and you've earned an interview for your dream job in Java development. But that's not the end of the story. Competition for every job is tough. You need to stand out from a crowd of candidates by showing you have the foresight and knowledge to answer core Java interview questions. Here are three types of questions an interviewer may throw at you.
1. Technical Questions
In the early stages of an interview you may encounter technical questions that test your base knowledge. For example, the interviewer may ask what object-oriented programming means or may ask you how to use different keywords in a simple program. Many questions relate to the Java virtual machine (JVM) and how it makes Java platform-independent by running the same code on any device or operating system. It helps to know the benefits of a "write once, run anywhere" style of development where there's no need to compile code multiple times.
2. Questions About Coding in a Team
Programmers often operate in teams, working on separate code elements that must plug into existing programs and interact correctly. Interviewers need to establish that you have the right attitude for working as part of a team, and that you also have the flexibility to adapt to different working environments. If an interviewer asks about working in teams, it's important to express that you're very communicative and that you make a habit of commenting your Java code so that it's easy for other programmers to understand. Don't be afraid to say you ask for help when you need it; that's part of being a good team player.
3. Questions About Your Experience
Programmers and developers should never stop learning and should take opportunities to enhance their skills through training, self-teaching, and hands-on practical experience. An employer wants more than a skilled worker; an employer wants a skilled worker who intends to keep growing. It's a good idea to have a portfolio of home projects, certifications from online learning courses, and references from employers and schools.
Certified for Success
If your answers to core Java interview questions roll off the tongue, you appear calm and in control with an air of confidence and preparedness that's sure to leave a lasting impression on the interviewer. But while slick interview skills are essential to win your dream job, you still need to have training in the subject matter, and even some certification to show you aren't all talk. A Udacity Nanodegree program is a convenient way to fit study into your life, giving you the opportunity to develop your programming skills and interview techniques, and even get certification online. Browse the Udacity Catalog to discover a range of courses to help you gain a solid foundation of knowledge on which to build your career in Java development.