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Sr Java Developer Interview Questions
5,526 sr java developer interview questions shared by candidates
JAVA What is Encapsulation? What is Inheritance? What is the difference between overloading and overriding? What is polymorphism? What is the difference between an Abstract class and an Interface? What is an immutable object? What is the difference between a Set, List and Map? Name a collection that is thread safe? (Vector) What are two ways to implement a Thread in Java? What is a servlet? What is String Builder used for? DATABASES How does JDBC make a query? What is a left inner join? What is an outer join? What is aggregation? Give an example of a SQL query that uses aggregation? DESIGN PATTERNS What is the MVC design pattern? What is the Facade design pattern? What is the Decorator design pattern? HTTP What is the difference between JSON and XML? What are the 7 HTTP request methods? (GET, POST, HEAD, PUT, DELETE, OPTIONS, CONNECT) What is the difference between SOAP and REST? SPRING What is dependency injection in Spring? Several other questions on spring..
tell me to your self ?
I was asked how my attempt at the programming task accomplished a particular requirement that I had not fully implemented.
Russian roulette - is it better to go first or second? There is no spin in-between shoots.
Implement a given interface in java. (Accounts class with deposit and withdraw methods
Core java Spring hibernate plsql
What are the things that motivated you for relocating to Estonia?
Find minimum plotform to organise trains. arr[]={ 9:40, 9:50, 11:25}; dep[]={ 12:00, 11:20, 11:30}; Expected output : 3 Explanation: arr is arrival time of a train and dep is departure time of a train respectively. 1st train arrive at 9:40 and departure at 12:00. Before this 1st train leave station, 2nd train arrive at 9:50. So we cannot manage these 2 train in 1 plotforms. Like this we need to find minimum trains to organise all trains
Written questions too long , time is short.
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