Bug 51895 Error when recovering javadoc archive path for a jar
1. add swt.jar to the Java build path of a project 2. open the properties dialog for this jar from the package explorer 3. change the javadoc location to : [x] javadoc in archive archive path: <path_to_eclipse>/plugins/org.eclipse.platform/doc/isv/doc.zip (in my case '/home/luc/host/eclipse/plugins/org.eclipse.platform/doc/isv/doc.zip') path within archive: reference/api 4. close the properties dialog 5. reopen the properties dialog The leading slash is missing, the dialog display the error 'the archive is missing '
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavadocConfigurationBlock.java
public void dialogFieldChanged(DialogField field) {
			jdocDialogFieldChanged(field);
		}
	}
	private void jdocDialogFieldChanged(DialogField field) {
		if (field == fURLField) {
			fURLStatus= updateURLStatus();
			statusChanged();
		} else if (field == fArchiveField) {
			fArchiveStatus= updateArchiveStatus();
			statusChanged();
		} else if (field == fArchivePathField) {
			fArchivePathStatus= updateArchivePathStatus();
			statusChanged();
		} else if (field == fValidateURLButton || field == fValidateArchiveButton) {
			EntryValidator validator= new EntryValidator();
			BusyIndicator.showWhile(fShell.getDisplay(), validator);
		} else if (field == fBrowseFolder) {
			String url= chooseJavaDocFolder();
			if (url != null) {
				fURLField.setText(url);
			}
		} else if (field == fBrowseArchive) {
			String jarPath= chooseArchive();
			if (jarPath != null) {