Java Developers are specialist programmers who build applications in Java. They are responsible for developing and testing software, determining application features and functionality and recommending changes to existing Java-based applications, among other duties.
When you're interviewing Java Developers, candidates should demonstrate attention to detail and excellent problem-solving skills. Bad candidates will struggle to effectively distill complex terminology.
Java Developer Interview Questions:
1. What data types does Java support?
Every Java Developer should be able to list the eight different Java data types, namely Byte, Short, Int, Long, Autoboxing and Unboxing. Look for candidates who describe their upper and lower values.
2. What, in your opinion, is the most important quality in a Java Developer?
Candidates should list attention to detail and excellent problem solving skills as key attributes in a Java Developer.
3. What are Constructors in Java?
This question tests the technical expertise of a Java Developer. Candidates should describe Constructors as allowing developers to create class separations in their code. Java enthusiasts will go into detail about the various uses for Constructors.
4. How do you stay abreast of developments in Java programming?
Candidates should list reading blogs, technical literature and attending conferences as part of their self-development process.
5. Describe a time when you made a mistake in your duties. How did you rectify it?
Candidates should acknowledge the importance of diligence in their work and how oversight can lead to application errors that can result in a loss of business productivity. Look for stories where candidates erred, rectified their error and learned a valuable lesson from it.