In this lesson, we explain why a classpath resource may not be found when running a Spring Boot application as a JAR.
You will learn why code may work in IntelliJ but fail after packaging, how classpath resources behave inside a JAR, and how to fix the issue correctly.
In this video you will learn:
why classpath resources fail in packaged JARs
common mistakes with src/main/resources
why getFile() can fail
why InputStream is safer
how to use ClassPathResource correctly
how to verify whether a file is included in the JAR
This video is perfect for Spring Boot beginners and backend developers dealing with resource loading, file handling, and deployment issues.
#SpringBoot #Java #ClasspathResource #BackendDevelopment #SpringFramework
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