Add Project Some projects cannot is imported because they already exist in the workspace

The first import from an external file HelloWorld project to the workspace directory, success.

After deletion, import the workspace directory hint from the outside again Some projects cannot be imported because they already exist in the workspace

Deleting a HelloWorld project in eclipse does not tick delete project contents on disk (cannot is undone) does not remove the file.

prompt when adding HelloWorld project again

Some projects cannot be imported because they already exist in the workspace

Cause: There are HelloWorld project files in workspace.

The Copy projects into workspace check box is not ticked and you can click Refresh on the right.

Can add success, of course, this project is not copied to the workspace directory.

You can also correct this: the first import and copy to workspace in the HelloWorld project, this method of import, delete again when the check on the Delete project contents on disk (cannot is undone), This will completely remove the HelloWorld project in workspace and then be successful when importing an external HelloWorld project.