if ( url != null ) return url; else return "jdbc:derby:" + System.getProperty("java.io.tmpdir")+File.separator+ "DTETest";
if ( url == null ) url = "jdbc:derby:" + System.getProperty("java.io.tmpdir")+File.separator+ "DTETest";  try{ new File( System.getProperty("java.io.tmpdir")+File.separator + "HELLO.txt").createNewFile( ); }catch(Exception e) {  } throw new NullPointerException( url +"                " +  System.getProperty("java.io.tmpdir"));
	public static String getURL( )	{		String url = System.getProperty( "DTETest.url" );		if ( url != null )			return url;		else			return "jdbc:derby:" + System.getProperty("java.io.tmpdir")+File.separator+ "DTETest";	}