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Desarrollador Web Java J2ee Interview Questions

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423 desarrollador web java j2ee interview questions shared by candidates

In 1st F2F round they will ask basic questions from OOPS, Multithreading, Collections, SQL, JOINS, and about the project you have mentioned in the resume, (I have mentioned based on Spring MVC, Spring Boot). So the questions were from there. 2nd F2F was almost same with some additional questions from RESTFul web services
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Java/J2EE Developer

Interviewed at STMicroelectronics

3.8★
Jun 21, 2019

In 1st F2F round they will ask basic questions from OOPS, Multithreading, Collections, SQL, JOINS, and about the project you have mentioned in the resume, (I have mentioned based on Spring MVC, Spring Boot). So the questions were from there. 2nd F2F was almost same with some additional questions from RESTFul web services

What is the difference between abstract classes and interfaces in Java? Explain the concept of multithreading in Java and how it is achieved. How does Java handle memory management and garbage collection? What are the access modifiers in Java, and how do they differ from each other? What is the difference between static and non-static methods in Java? How do you handle exceptions in Java? Explain the try-catch-finally block. What is the purpose of the "final" keyword in Java, and where is it used? What are the different types of inheritance in Java, and how do you implement them? How does Java support method overloading and method overriding? Explain the "equals" and "hashCode" methods in Java, and why are they important when dealing with objects. How would you read and write data to a file in Java using I/O streams?
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Sr. Java/J2EE Developer

Interviewed at KREATIVE

3.9★
Jul 17, 2023

What is the difference between abstract classes and interfaces in Java? Explain the concept of multithreading in Java and how it is achieved. How does Java handle memory management and garbage collection? What are the access modifiers in Java, and how do they differ from each other? What is the difference between static and non-static methods in Java? How do you handle exceptions in Java? Explain the try-catch-finally block. What is the purpose of the "final" keyword in Java, and where is it used? What are the different types of inheritance in Java, and how do you implement them? How does Java support method overloading and method overriding? Explain the "equals" and "hashCode" methods in Java, and why are they important when dealing with objects. How would you read and write data to a file in Java using I/O streams?

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