/**
* Load the file names of all files in the given directory.
*
* @param dirName Directory (folder) name.
* @param suffix File suffix of interest.
* @return The names of files found.
*/
private String[] findFiles(String dirName, String suffix) {
File dir = new File(dirName);
if (dir.isDirectory()) {
String[] allFiles = dir.list();
if (suffix == null) {
return allFiles;
} else {
List<String> selected = new ArrayList<String>();
for (String filename : allFiles) {
if (filename.endsWith(suffix)) {
selected.add(filename);
}
}
return selected.toArray(new String[selected.size()]);
}
} else {
System.out.println("Error: " + dirName + " must be a directory");
return null;
}
}
