Axles India Interview Questions and Answers

Hashmap is a data structure that stores key-value pairs and uses hashing to map keys to their corresponding values.

• Hashmap uses an array to store the key-value pairs

• A hash function is used to map the key to an index in the array

• Collisions can occur when two keys map to the same index, which can be resolved using techniques like chaining or open addressing

• Hashmap provides constant time complexity for insertion, deletion

The @Autowired annotation is the most useful annotation used in Spring Boot and Spring JPA.

• The @Autowired annotation is used for automatic dependency injection.

• It eliminates the need for manual wiring of beans.

• It can be used with constructors, fields, and methods.

• Example: @Autowired private UserRepository userRepository;

Singleton and Factory patterns are creational patterns used in Java to create objects.

• Singleton pattern ensures that only one instance of a class is created and provides a global point of access to it.

• Factory pattern provides an interface for creating objects, but allows subclasses to decide which class to instantiate.

• Singleton pattern can be implemented using private constructor, static method and static variable.

• Fact...read more

IC Engine stands for Internal Combustion Engine, which is a type of engine that generates power by burning fuel inside the engine.

• IC Engine is a type of engine where fuel is burned internally to generate power

• It is commonly used in vehicles such as cars, motorcycles, and trucks

• Examples of IC Engines include gasoline engines and diesel engines