Resolving 'javax.servlet.http.HttpServlet' Not Found on the Java Build Path

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Understanding the Issue

Steps to Resolve the Error

Add Servlet API to Your Project

To resolve this issue, you need to add the Servlet API library to your project's build path. There are several ways to do this, depending on your development environment and build tool.

Using Eclipse

Download the Servlet API: If you don't already have the Servlet API JAR file, download it from the official source or Maven repository.

Add JAR to Build Path:

Right-click on your project in the Project Explorer.

Select Build Path > Configure Build Path.

Go to the Libraries tab.

Click Add External JARs.

Click Apply and Close.

Verify Build Path: Ensure the JAR file is listed under the Libraries section of your build path.

Using Maven

[[See Video to Reveal this Text or Code Snippet]]

The scope element is set to provided because the Servlet API is usually provided by the web server or container.

Using Gradle

[[See Video to Reveal this Text or Code Snippet]]

Refresh Your Project

After adding the necessary library, refresh your project to ensure the changes take effect. In Eclipse, you can do this by right-clicking your project and selecting Refresh.

Clean and Build

Sometimes, a clean and rebuild of your project is necessary to resolve any lingering issues:

In Eclipse, go to Project > Clean and then Build Project.

For Maven, use mvn clean install.

For Gradle, use gradle clean build.

Conclusion