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  • 2022-11-14 00:00

    Error while saving entities into the database using Spring Data Jpa

    I created an entity class (User.java) and repository interface (UserRepository.java). If I run my application everything ...

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  • 2022-11-14 00:00

    How to use composite file writer for jdbc or writing data to database?

    I have written a composite item writer for writing to the flat file, but I want to write in database also if certain condition meet. So, how can I ...

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  • 2022-11-14 00:00

    Working with JpaRepository, the getById () function returns null

    I have the following situation: A user entity can have a lot of friends who are also users themselves.

    To resolve this situation I used this ...

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