Finding files that don't have a wildcard

Question

So I have csvs:

R-15_A.csv

R-16_A.csv

R-17_A.csv

R-15_B.csv

R-15_A_Processed.csv

R-15_B_Processed.csv

R-16_A_Processed.csv

R-17_A_Processed.csv

Been using commons.io's wildcardfilefilter but am confused at the filter.

So if I wanted to get a list of files that are A but not processed what would I use for the filter?

File dir = new File(".");
        FileFilter fileFilter = new WildcardFileFilter("filter?");
        File[] files = dir.listFiles(fileFilter);
        for(File f:files)
        {
            log.info("service2: "+f.getName());
        }
        log.info("service2: size "+files.length);

Answer 1

＆＃34; * A.csv＆＃34;应匹配＆＃39; A＆＃39;但不是“已处理”