Java Interview Questions

The Java fundamentals interviewers ask about most, from core JVM concepts to collections and OOP design.

• What is the difference between JDK, JRE, and JVM?
• What is the difference between an interface and an abstract class in Java?
• What is the difference between == and .equals() in Java?
• What is method overloading vs method overriding in Java?
• What is the difference between ArrayList and LinkedList in Java?