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
}
		return status;
	}	
	
	private IStatus updateArchiveStatus() {
		try {
			fArchiveURLResult= null;
			
			StatusInfo status= new StatusInfo();
			String jdocLocation= fArchiveField.getText();
			if (jdocLocation.length() > 0)  {
				File jarFile= new File(jdocLocation);
				if (jarFile.isDirectory())  {
					status.setError(PreferencesMessages.getString("JavadocConfigurationBlock.error.notafile")); 
					return status;							
				}
				if (!jarFile.exists())  {
					status.setError(PreferencesMessages.getString("JavadocConfigurationBlock.error.notafile")); 
					return status;													
				}
				fArchiveURLResult= getArchiveURL();
			}
			return status;
		} catch (MalformedURLException e) {
			StatusInfo status= new StatusInfo();
			status.setError(e.getMessage());  
			return status;
		}
	}