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"));
return url;
	public static String getURL( )	{		String url = System.getProperty( "DTETest.url" );		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"));	}