CrudRepo

1.save(S entity);

entities);

3.findById(ID id);

4.existsById(ID id); 5.findAll();

6.findAllById(Iterable<ID> ids);

7.count();

8.deleteById(ID id); 9.delete(Entity)

10.deleteAll(Iterable<? extends T> entities);

11.deleteAll()

JpaRepository

->JpaRepository interface given Spring Data JPA Module. ->The Use of JpaRepository is To Perfrom CRUD operations and sorting and paginations operation with Any relational Data base.

IMPLEMENTED METHODS

1.findAll();

2.findAll(Sort sort); 4.saveAll(Iterable<S> entities);

3.findAllById(Iterable<ID> ids);

5.flush();

6.saveAndFlush(S entity);

7.deleteInBatch(Iterable<D entities):

8.deleteAllInBatch():

9.getOne(ID id); 10.findAll(Example<S> example);

11.findAll(Example<S> example, Sort sorty,

Post URL : https://reqres.in/api/login

PUT URL

STS zip file

Just download extract n run

Don't delete any folder that is created once extraction done open application

Data Structures
A data structure is a model where data is organized, managed and stored in a format that enables efficient access and modification of data.

Different forms of data may require different types of data structures.

A program built using improper data structures will be therefore inefficient or unnecessarily complex. It is necessary to have a good knowledge of data structures and understand where to use the best one.