Top 10 Java Interview Questions for 2025

Java continues to be one of the most sought-after programming languages in the tech industry. If you’re preparing for a Java-related job interview, having a solid understanding of key concepts and practical applications can give you a significant edge. Here are the top 10 Java interview questions for 2024 that every aspiring developer should know.

1. What is the difference between JDK, JRE, and JVM?

Answer:

• JDK (Java Development Kit): A complete environment for developing, compiling, and running Java applications. It includes JRE and development tools like compilers and debuggers.
• JRE (Java Runtime Environment): A runtime environment to execute Java applications. It includes JVM and standard libraries.
• JVM (Java Virtual Machine): An engine that provides runtime environment to execute Java bytecode.

2. Explain the concept of Java’s platform independence.

Answer: Java is platform-independent because its code is compiled into bytecode, which can run on any machine equipped with a JVM, irrespective of the underlying operating system.