Java searching file name from the one folder

Question

I am studying Java and I am not really sure the way to searching file. I would like to build the function which returning file names ( the files name should begin with st

Answer 1

Probably the easiest way is to simple use File#listFiles(FileFilter), something like

File[] fileList = new File("/path/to/search").listFiles(new FileFilter() {
    @Override
    public boolean accept(File pathname) {
        return pathname.getName().endsWith(".txt");
    }
});