@Override
    public void excludeFiles(String[] filenames) {
        if (filenames != null && filenames.length > 0) {
            EXCFILE = filenames;
            this.FILEFILTER = true;
        }
    }
@Test
    public void testExcludeFiles() {
        testf.excludeFiles(INCL);
        for (TestData td : TESTDATA) {
            String theFile = td.file;
            boolean expect = td.exclfile;

            testf.isFiltered(theFile, null);
            String line = testf.filter(theFile);
            if (line != null) {
                assertTrue(expect, "Expect to accept " + theFile);
            } else {
                assertFalse(expect, "Expect to reject " + theFile);
            }
        }
    }