As with any operating system, developers can create code using a variety of different programming languages. Since the Android OS operates on mobile platforms with limited resources, programmers need to be very efficient in their code. When responding to this question, you should provide the interviewer with a list of the programming languages you typically use and which align with those used by their current development team. You can identify which languages they use by researching the organization. Sources for the information include their website, the job description, and speaking with current and former software development team members.