File file = new File(FunPath.getCaptureTimpPath());
DeleteFile(file);

public void DeleteFile(File file) {
    if (file.exists() == false) {
        return;
} else {
        if (file.isFile()) {
            file.delete();
            return;
}
        if 
 
(file.isDirectory()) {
            File[] childFile = file.listFiles();
            if (childFile == null || childFile.length == 0) {
                return;
}
            if(childFile.length>1){
                for (File f : childFile) {
                    DeleteFile(f);
}
            }
        }
    }
}