Solving the java.lang.NoSuchMethodError in GraphQL Applications

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When you encounter the error message like the following:

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it typically indicates that your application is attempting to call a method that does not exist in the classpath. It’s often a result of version conflicts between different dependencies used in the project, especially in cases where libraries depend on different versions of another library.

Context: GraphQL and Dependencies

In the context of your GraphQL application, the issue arises primarily when two versions of the GraphQL library are included in your project dependencies. For instance, you might have both graphql-java and graphql-spring-boot-starter with conflicting versions. This duality could lead to methods being unavailable when they're needed, creating the aforementioned error.

The Solution: Resolving Dependency Conflicts

Step 1: Identify Your Dependencies

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In this instance, you have the graphql-java library at version 14.0 and the graphql-spring-boot-starter library at version 5.0.2. The two versions may not be compatible with one another, leading to conflicts.

Step 2: Remove the Conflicting Dependency

Based on the expert advice, the simplest and most effective solution is to remove the dependent library that is causing the conflict. In this case, removing the graphql-java dependency is likely to resolve the problem:

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Step 3: Clean and Build Your Project

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Step 4: Testing Your Solution

After rebuilding, run your tests or start your application to confirm that the error is resolved. If everything works fine, you should see your GraphQL queries functioning seamlessly again without throwing a NoSuchMethodError.

Conclusion

If you have any further questions or need assistance with your GraphQL implementation, feel free to reach out! Happy coding!