spring boot
Senior Java Engineer Interview Questions
5,798 senior java engineer interview questions shared by candidates
What is JWT? What does it consist of? How is it encoded? Is it stored in a database? How do you verify a JWT is valid?
What are the different kinds of test doubles? How do they work in unit and integration testing?
Write tests for a function that reverses strings and write a Spring controller in Java 8.
What is the Aspect Oriented ? what is the Dependency Injection ? what are the SOLID principles ,explain them?
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Questions about Java and Spring that no one has ever heard of
1) There is a class in which i declare 2 instance variables. A map and a string. Initialize both. Then, pass both of them to a method and change the values. What will be the value of map and string before and after calling the method. 2) Dynamic Polymorphism. All the variants(Object of child, reference of parent etc etc). If the methods are static , how does DP work? 3) Typecasting. How does it work? 4) Immutable classes. How do you initialize it? 5) When do you prefer Interfaces and when abstract class. Prepare well for this question. They confuse you a lot. 6) Overloading with different arguments. 7) Instantiating an abstract class. There is an abstract class and other normal class extends the abstract class. In constructor it calls , super(this). What happens?
General technical discussion type of interview and a pair programming session
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