Cannot resolve class or package 'apache'

This error message usually indicates that the Apache library is not properly imported or installed in your project. You may need to add the Apache library to your project's build path or dependencies.

To add the Apache library to your project, you can follow these steps:

1. Download the Apache library from their official website.
2. Extract the downloaded file and locate the jar file(s) that you need.
3. In your IDE, go to your project's build path or dependencies settings.
4. Add the Apache jar file(s) to your project's build path or dependencies.

If you are using a build tool like Maven or Gradle, you can add the Apache library as a dependency in your project's configuration file. For example, in Maven, you can add the following dependency to your pom.xml file:

<dependency>
    <groupId>org.apache</groupId>
    <artifactId>apache-library</artifactId>
    <version>1.0.0</version>
</dependency>

Remember to replace `apache-library` with the actual name of the Apache library that you need, and `1.0.0` with the version number that you want to use.