What is Java?
Why Interviewers Ask This
Interviewers use this question to quickly assess whether a candidate has the foundational knowledge required for Java development. It reveals whether you understand the building blocks that more complex concepts rely on.
Answer
Java is a high-level, class-based, object-oriented programming language developed by Sun Microsystems (now owned by Oracle) and released in 1995. Its most famous principle is "Write Once, Run Anywhere" (WORA) — Java code is compiled into platform-independent bytecode that runs on any device with a Java Virtual Machine (JVM). Java is statically typed, strongly typed, and manages memory automatically through garbage collection. It is one of the most widely used languages in the world, powering enterprise backends, Android apps, and large-scale distributed systems.
Pro Tip
Demonstrate both theoretical understanding and practical experience. Say what it is, then give an example of how you actually used it in a Java codebase.