Explain how to check and correct classpath configuration problems that trigger the 'Error Parsing File' error.

Go to Project Properties -> Libraries. Ensure that all necessary JAR files and libraries are added to the project's classpath, both for compilation and runtime. If using Maven or Gradle, verify that the dependencies are correctly specified in the `pom.xml` or `build.gradle` file, respectively. Ensure the project has access to the appropriate JDK.