Fixing the Scanner cannot be resolved to a type Error in Java

Описание: Encountering a "Scanner cannot be resolved to a type" error in Java? Discover how to effectively resolve this common issue in Visual Studio with our step-by-step guide!
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This video is based on the question https://stackoverflow.com/q/69559992/ asked by the user 'Phil' ( https://stackoverflow.com/u/17144544/ ) and on the answer https://stackoverflow.com/a/69560027/ provided by the user 'pySam1459' ( https://stackoverflow.com/u/17070803/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the "Scanner Cannot Be Resolved to a Type" Error in Java

As a beginner in Java, running into errors can be a frustrating experience, especially when you're just trying to get your program to work. One common error that many newcomers face is the "Scanner cannot be resolved to a type" error. If you're using Visual Studio and working on a project like a Mortgage Calculator, you might come across this message, which can halt your progress. In this guide, we will explore what this error means and how to fix it efficiently.

What Causes the Error?

The "Scanner cannot be resolved to a type" error typically occurs for the following reasons:

Missing Import Statement: The Scanner class is part of the java.util package, and if it’s not imported correctly, you’ll encounter this error.

Typographical Errors: A simple typo in your code can prevent the Java compiler from recognizing the Scanner class.

In your specific case, we’ll focus on the second reason, which is a typo in the code.

Identifying the Problem in Your Code

Looking at the code you've shared, we can identify the line that is causing the error:

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

Here, Scannner is incorrectly spelled. It should be Scanner (note the extra 'n' in your code). This kind of mistake can be easy to miss, especially when you're focused on many other elements of your program.

How to Fix the Error

To resolve this error, simply correct the typo in your code. Here’s how you should modify the line:

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

Steps to Follow:

Open Your Java File: Go to the file where you've written your Mortgage Calculator code.

Locate the Error: Find the line that declares the Scanner instance.

Make the Correction: Change Scannner to Scanner.

Save Your Changes: Always remember to save your file after making changes.

Compile and Run: Compile your program again to check if the error is resolved.

Conclusion

Errors like "Scanner cannot be resolved to a type" are common among beginners but can be easily fixed with careful attention to detail. By correcting the typo in your code, you should be able to continue with your Java programming journey without further interruptions.

Happy coding, and remember that mistakes are just stepping stones on your path to becoming a proficient programmer!