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Java Technical Lead Interview Questions

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515 java technical lead interview questions shared by candidates

how to enable enable debug mode in springboot app can we modify a msg in kafka msg jpa repository vs jpa template jdbcrepository vs jdbc template Saga design pattern mongo template vs mongo repository immutable classes compararor and comparable solid design principles how to maintain transaction> SAGA scopes in spring bean different annotation on service layer autogeneration id jpa configuration annotations spring dev tool before starting application we want to load something where to implement>@postconstruct on top of init method command line runner using componentscan exclude package
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Java Team Lead

Interviewed at Cognizant

3.9★
May 12, 2025

how to enable enable debug mode in springboot app can we modify a msg in kafka msg jpa repository vs jpa template jdbcrepository vs jdbc template Saga design pattern mongo template vs mongo repository immutable classes compararor and comparable solid design principles how to maintain transaction> SAGA scopes in spring bean different annotation on service layer autogeneration id jpa configuration annotations spring dev tool before starting application we want to load something where to implement>@postconstruct on top of init method command line runner using componentscan exclude package

1. Tell me something about yourself. 2. Roles and responsibilities in current project 3. Project architecture and on which part you work in project. 4. Git commands 5. Spring boot annotations 6. Few questions on Java 8 7. 2 Java 8 programs 8. Singleton implementation.
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Lead Java Developer

Interviewed at Cognizant

3.9★
Sep 10, 2022

1. Tell me something about yourself. 2. Roles and responsibilities in current project 3. Project architecture and on which part you work in project. 4. Git commands 5. Spring boot annotations 6. Few questions on Java 8 7. 2 Java 8 programs 8. Singleton implementation.

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