var keyword not working in spring boot application

  1. Ensure that you are using a version of Spring that supports the var keyword, such as Spring Framework 5.0 and above.

  2. Confirm that your Spring Boot project is using Java 10 or a higher version.

  3. Verify that the source code file where you are trying to use the var keyword has the correct file extension, typically ".java".

  4. Check if there are any conflicting dependencies in your project that might be causing issues with Java version compatibility.

  5. If you are using an Integrated Development Environment (IDE) like IntelliJ or Eclipse, ensure that the project's Java compiler settings match the version of Java you are using and that it supports the var keyword.

  6. Make sure that the code in which you are using the var keyword is within a method or block where type inference can be applied.

  7. If you are facing compilation issues, inspect the error messages provided by the compiler for more specific details on what might be causing the problem.

  8. If the issue persists, explicitly specify the type instead of using the var keyword to see if that resolves the problem.

  9. Consider checking the Spring Boot version and compatibility with the Java version you are using. Some versions of Spring Boot might have specific requirements regarding Java versions.

  10. If all else fails, consult the official Spring documentation, forums, or community for any known issues or solutions related to the usage of the var keyword in Spring applications.