Bug 100177 [Import/Export] Importing existing project with different case over existing project fails with empty error dialog
I20050610-1757 1. Have a Java project 'p' (lower-case p) on disk 2. Create a Java project 'P' (upper-case P) in your workspace 3. File > Import > Existing Projects Into Workspace 4. Select the directory that contains 'p' on disk 5. Finish Observe: You get an empty error dialog
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
* Answer a handle to the zip file currently specified as being the source.
	 * Return null if this file does not exist or is not of valid format.
	 */
	protected ZipFile getSpecifiedZipSourceFile() {
		return getSpecifiedZipSourceFile(archivePathField.getText());
	}
	/**
	 * Answer a handle to the zip file currently specified as being the source.
	 * Return null if this file does not exist or is not of valid format.
	 */
	private ZipFile getSpecifiedZipSourceFile(String fileName) {
		if (fileName.length() == 0)
			return null;
		try {
			return new ZipFile(fileName);
		} catch (ZipException e) {
			displayErrorDialog(DataTransferMessages.ZipImport_badFormat);
		} catch (IOException e) {
			displayErrorDialog(DataTransferMessages.ZipImport_couldNotRead);
		}
		archivePathField.setFocus();
		return null;
	}
	/**
	 * Answer a handle to the zip file currently specified as being the source.
	 * Return null if this file does not exist or is not of valid format.
	 */
	protected TarFile getSpecifiedTarSourceFile() {
		return getSpecifiedTarSourceFile(archivePathField.getText());
	}