Spring Data : Exploring CrudRepository

CrudRepository interface provides generic operations that can be performed on a specific type.

      Save an entity

      saveAll: Save all the entities

      findById: Get an entity by id

      existsById: Check entity exists with this id or not

      findAll: Get all the objects of given entity

      Update an entity

      findAllById: get all the entities for given ids

      count: Count all the entities

      deleteById: Delete element by id

      Delete given entity

      deleteAll: Delete multiple entities

      deleteAll: Delete all entities

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