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Maven - Interview Questions and Answers for 'Maven dependency' - 2 question(s) found - Order By Newest

 Q1. How do you resolve Maven Dependencies issue while upgrading dependencies versions ?Maven2016-11-11 15:06:45

Ans. Step 1 - Upgrade the required dependency , perform build and check build errors

Step 2.1 - If the error is of missing transitive dependency ( which is rare and means that the previous version has a dependency which is missing in the later version ), I would look for the dependency in google and hence will include it as direct dependency in Pom file.

Step 2.2. If the error is for Duplicate dependencies , and the choice is between transitive and direct dependency, I usually remove the direct dependency.

Step 2.3 - If the error is for Duplicate dependencies , and both are transitive dependencies. I first make a choice ( usually later version ) and then ignore the previous version dependency.

Step 2.4 - If the error is for Duplicate dependencies , and there are more than 2 duplicates, I usually ignore it by specifying within maven-enforcer-plugin config.

Step 3 - Perform a Clean Build.

Step 4 - Check Maven Dependency Tree to make sure that Duplicates have been removed or dependency is there in case of missing dependency.

Step 5 - Perform tests and make sure that there are no runtime problems.

Step 6 - If there are runtime problems ( which very likely occurs if you have different version dependencies , very likely by doing 2.4 , you will have to remove step 2.4 and alternately perform 2.2 or 2.3 )

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 Q2. What are different dependency scopes in Maven ?Maven2016-09-14 14:12:00

Ans. Compile

This is the default scope. Compile dependencies are available in all classpaths of a project. Moreover, these dependencies are propagated to dependent projects.

Provided

This is much like compile, but indicates you expect the JDK or a container to provide the dependency at runtime.

Runtime

This scope indicates that the dependency is not required for compilation, but is for execution.

Test

This scope indicates that the dependency is is only available for the test compilation and execution phases. This scope is not transitive.

System

This scope is similar to provided except that you have to provide the JAR which contains it explicitly.

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   Like         Discuss         Correct / Improve     maven  maven dependency scopes


Related Questions

  What is a transitive dependency ? Can we override Transitive Dependency version and If Yes, how ?
 How do you resolve Maven Dependencies issue while upgrading dependencies versions ?
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