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Full Stack Java Developer Interview Questions

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964 full stack java developer interview questions shared by candidates

- Method Overriding vs Method Overloading? - Can you override the main method in Java? - How do we prevent a method from being overriden? - What does static keyword do in Java? - What is a Singleton class in Java? How do we implement it? - Static methods vs non-static methods in Java? - Difference between String, StringBuilder, StringBuffer? - Difference between Interface & Abstract Classes? - HashSet vs Treeset? - HashMap vs HashTable? - What is the Hibernate Framework in Java? - throw vs throws keywords in java? - Constructor vs regular method? - What is Inheritance? - Types of Inheritance in Java? - What happens if static modifier is not included in the main method? - Can we make the main thread a daemon thread? - What happens if we have multiple main methods in the same class in Java? - Is it mandatory for a catch block to be after a try block in Java? - Different Unit testing types? - Best practices to follow when conducting unit-testing? - Different approaches, strategies that should be followed when writing strong unit-test cases? - How many phases of unit-testing are there? - What percent of coverage do we want to shoot for unit testing? - SQL - what is stored procedure and how do we get a stored procedure? - SQL - what are triggers? What are different kinds of triggers? - SQL - What are indexes, clusters, and non-clustered indexes? - SQL - What is the difference between a base and derived relations? - SQL - Difference between RDBMS and a normal database? (ex: mySQL vs SQL) - How does React.js work? - How is react different from react-native? - What is the difference between Virtual DOM and real DOM? - How do we create Forms in React.js? what is their use case? - Docker Experience? - Kubernetes experience? - Orchestration? My 2 LC easy questions were: - Implement a sorting algorithm for an integer array without using a built in sort-method in Java. - Reverse a String without using StringBuffer or StringBuilder in Java.
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Full Stack Java Developer

Interviewed at Ascendion

3.8★
Nov 21, 2023

- Method Overriding vs Method Overloading? - Can you override the main method in Java? - How do we prevent a method from being overriden? - What does static keyword do in Java? - What is a Singleton class in Java? How do we implement it? - Static methods vs non-static methods in Java? - Difference between String, StringBuilder, StringBuffer? - Difference between Interface & Abstract Classes? - HashSet vs Treeset? - HashMap vs HashTable? - What is the Hibernate Framework in Java? - throw vs throws keywords in java? - Constructor vs regular method? - What is Inheritance? - Types of Inheritance in Java? - What happens if static modifier is not included in the main method? - Can we make the main thread a daemon thread? - What happens if we have multiple main methods in the same class in Java? - Is it mandatory for a catch block to be after a try block in Java? - Different Unit testing types? - Best practices to follow when conducting unit-testing? - Different approaches, strategies that should be followed when writing strong unit-test cases? - How many phases of unit-testing are there? - What percent of coverage do we want to shoot for unit testing? - SQL - what is stored procedure and how do we get a stored procedure? - SQL - what are triggers? What are different kinds of triggers? - SQL - What are indexes, clusters, and non-clustered indexes? - SQL - What is the difference between a base and derived relations? - SQL - Difference between RDBMS and a normal database? (ex: mySQL vs SQL) - How does React.js work? - How is react different from react-native? - What is the difference between Virtual DOM and real DOM? - How do we create Forms in React.js? what is their use case? - Docker Experience? - Kubernetes experience? - Orchestration? My 2 LC easy questions were: - Implement a sorting algorithm for an integer array without using a built in sort-method in Java. - Reverse a String without using StringBuffer or StringBuilder in Java.

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