Insolutions Global Interview Questions, Process, and Tips

Map is a built-in function in many programming languages that allows you to transform data from one form to another.

• Map applies a function to each element in an array and returns a new array with the transformed elements.

• It can also be used with other data structures like objects and sets.

• Internally, map uses a loop to iterate over each element in the array and applies the provided function to it.

• The transformed elemen...read more

Difference between save and persist in Hibernate

• Save method returns the generated ID immediately while persist method returns void

• Save method can be called outside of a transaction while persist method must be called within a transaction

• Save method can be used with detached objects while persist method cannot

• Save method can be used with transient objects while persist method cannot