10 Common Java Interview Questions for Freshers in 2024

By Team foundit

White Scribbled Underline

March 11, 2024

Preparing for a Java interview? Don't worry, we've got you covered! These are the top 10 Java interview questions for freshers in 2024.

Q1. Why is Java Platform Independent?

Java code is compiled into bytecode, a format understood by different operating systems. This feature makes Java ideal for cross-platform development.

Q2. What is OOP in Java?

Object-Oriented Programming (OOP) is a programming concept in Java. You create objects that represent real-world things and define their behaviors.

Q3. What are Classes and Objects in Java?

Imagine a blueprint (class) for creating real-world things (objects). In Java, classes define the properties (data) and functionalities (methods) of objects.

Q4. What are operators in Java?

Operators are symbols used to perform operations on variables and values. Java has arithmetic, relational, logical, assignment, and bitwise operators.

Q5. What are the different data types in Java?

Java has primitive data types like int, float, char, and boolean, and non-primitive data types like arrays and classes.

Q6. What are control flow statements in Java?

Control flow statements control the execution flow of a Java program. Examples include if-else, switch, for, and while loops.

Q7. What is JVM, JRE, and JDK?

Interviewers often ask about these! JRE (Java Runtime Environment) runs Java programs. JDK (Java Development Kit) includes the JRE and tools for creating Java applications, while JVM (Java Virtual Machine) executes Java bytecode.

Q8. What is the Java Virtual Machine (JVM)?

The JVM is a virtual machine that executes Java bytecode. It provides platform independence for Java applications.

Q9. What are the four pillars of object-oriented programming (OOP)?

The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction.

Q10. What is Exception Handling in Java?

Exceptions are errors that occur during program execution. Exception handling allows you to manage these errors and prevent program crashes.

Java Interview Ready

 With a strong understanding of these concepts, you'll be well on your way to acing your Java interview! Prepare for your interview with foundit !