How to get list of files with specified extensions and excluding few directories?

Question

I need to list files(specified extensions) from a directory excluding a few subdirectories.

I'm able to filter with extensions but not with two conditions 1) Files should be filtered by extension 2) Should exclude few subdirectories

    File dir = new File("D:\\SomeDir");
    String[] extensions = new String[] { "txt", "java" };
    List<File> files = (List<File>) FileUtils.listFiles(dir, extensions, true);
    for (File file : files) {
        System.out.println("file: " + file.getCanonicalPath());
    }

How to exclude selected subdirectories?

Answer 1

try this code:

// for exlude file extension  
NotFileFilter suffixFileFilterFileFilter=new NotFileFilter(new 
SuffixFileFilter(new String[] { "txt", "java" }));  

//to include only selected extension use below one
//IOFileFilter suffixFileFilterFileFilter= new SuffixFileFilter(new String[] { "java", "txt" });

NotFileFilter directoryFileFilterFileFilter=new NotFileFilter(new 
PrefixFileFilter(new String[] { "tolearn", "dir2" }));   // for directory
File dir = new File("D:\\SomeDir");
List<File> fileList  = (List<File>)  FileUtils.listFiles(dir,suffixFileFilterFileFilter,directoryFileFilterFileFilter);
    for (File file : fileList) {
        System.out.println("file: " + file.getCanonicalPath());
    }