Build spring project error based on Maven _nestedruntimeexception cannot be resolved

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Error:
The type org.springframework.core.NestedRuntimeException cannot be resolved. It is indirectly referenced from required. class files

Story:
It is most common for developers to forget adding the jars to the classpath. I had apparently missed to the "Spring frameworks core jar to the" build path. The dependent spring context jar is added but missed the spring core jar. The application hit this error.

Solution:
This error occurs when the Spring-core jar is missing or corrupted. Add/replace the new Spring-core-4.2.6.release.jar (version might not being the same for your) to the "Build path." You might also need the Org.springframework.context-4.2.6.jar. The Jars can be downloaded fromhere. Can always use MAVEN dependencies to resolve this error. When using Maven, add the dependency to the Pom.xml file.