Why Does My Java Project Show 'Selection Does Not Contain a Main Type' in Eclipse?

Resolving "Selection Does Not Contain a Main Type" Error in Java

Problem Description

While attempting to run Java files in a newly created Eclipse project, the user encountered the error message "Selection does not contain a main type." Despite attempting various solutions, such as restarting Eclipse and creating build paths, the error persisted.

Solution

To resolve this issue, follow these steps:

1. Right-click on the folder containing the main class.
2. Select Build Path > Use as Source Folder.
3. Locate the main file and execute it as a Java application.

Additional Tips

• If the "Use as Source Folder" option is unavailable, select the "Remove from Build Path" option within the "Build Path" menu. This should enable the "Use as Source Folder" option to appear.
• Confirm that the main class has a valid main method in the following format:

public static void main(String[] args) {
    // Code to be executed
}

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