Hansen Technologies Principal Engineer Interview Questions and Answers

Default method is a method in an interface with a default implementation.

• Introduced in Java 8 to allow adding new methods to interfaces without breaking existing implementations

• Default methods can be overridden in implementing classes

• Used to provide a default implementation for methods in interfaces

Hash table is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.

• Hash table consists of an array of buckets, each containing a linked list of key-value pairs.

• When inserting a key-value pair, the hash function is used to determine the index of the bucket where the pair should be stored.

• During retrieval, the hash function is used again to find the correct bucke...read more