Question 220529 in Visual Studio Code Question posted in
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Visual Studio Code – JAVA – The declared package <package name> does not match the expected package "" in VS code

I know this question asked a lot and i read most answer but non of them solved my problem.

I’m kinda new at java but i’m using vscode over than a year. I never come across this kinda problem on other languages, libraries, frameworks.

When i open vscode, a couple seconds later, all my java source code files turns red and the error is

The declared package <package name> does not match the expected package ""

but jokes on me i dont have any packages on those files. when i open the source code files, some of them stays same, others turn normal?

enter image description here

I saw the extensions can cause this problem, like Java Language Support – by George Fraser
VS Marketplace Link: https://marketplace.visualstudio.com/items?itemName=georgewfraser.vscode-javac

I uninstall that, only microsoft’s and red hat’s extensions left. I have reloaded window a couple hundred times, close folder ets. I have no idea what is going on, please help.

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2

Answers


  1. 0

    Your class is located in the package (folder) week3.lesson.

    So you have to add the package declaration:

    package week3.lesson

    to the class.

    BTW: Take care of java naming conventions. Class names should start with upper case character and be camelCase not snake_case.
    In your case your class should be named:DrawCards

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  2. 0

    • Hover the mouse over the red wavy line to view error messages.

    • Ctrl+Shift+P –> Java: Clean Java Language Server Workspace and restart vscode.

    If you can run the code normally, you can ignore the warning.

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