Top 10 Java Interview Questions for Freshers in 2026

Preparing for your first Java interview? Here are the most frequently asked Java interview questions that every fresher should know before attending an interview.

1. What is Java?

Java is a high-level, object-oriented programming language known for its platform independence through the JVM (Java Virtual Machine).

2. What are the main features of Java?

• Object-Oriented
• Platform Independent
• Robust
• Secure
• Multithreaded
• High Performance (using JIT Compiler)

3. What is JVM, JRE, and JDK?

• JVM: Executes Java bytecode.
• JRE: Contains JVM and libraries needed to run Java applications.
• JDK: Includes JRE along with development tools like javac.

4. What are the four pillars of OOP?

• Encapsulation
• Inheritance
• Polymorphism
• Abstraction

5. What is the difference between == and .equals()?

• == compares object references.
• .equals() compares object content.

6. What is a Constructor?

A constructor is a special method that is automatically called when an object is created.

7. What is Method Overloading?

Method overloading allows multiple methods with the same name but different parameters in the same class.

8. What is Method Overriding?

Method overriding allows a subclass to provide its own implementation of a method already defined in its parent class.

9. What is Exception Handling?

Exception handling allows a program to handle runtime errors using try, catch, finally, throw, and throws.

10. Why is Java called Platform Independent?

Java source code is compiled into bytecode, which can run on any operating system that has a compatible JVM.

Final Tips

• Practice coding daily.
• Understand OOP concepts clearly.
• Learn Collections and Exception Handling.
• Solve coding problems regularly.
• Build small Java projects to strengthen your resume.

Good luck with your Java interview!